2007年6月28日
#
StringTokenizer tokenizer
= new StringTokenizer(number, ",");
boolean bool = true;
while (tokenizer.hasMoreTokens()) {
try {
Double.valueOf(tokenizer.nextToken());
} catch (Exception e) {
bool = false;
}
}
//將字符串轉化為數組的方法
int gv[];
int i = 0;
StringTokenizer tokenizer = new StringTokenizer(goodsVolume, "，, ");
gv = new int[tokenizer.countTokens()];//動態的決定數組的長度
while (tokenizer.hasMoreTokens()) {
String d = tokenizer.nextToken();
gv[i] = Integer.valueOf(d);//將字符串轉換為整型
i++;
}
//字符串解析
private String[] stringAnalytical(String str, String divisionChar) {
String string[];
int i = 0;
StringTokenizer tokenizer = new StringTokenizer(str, divisionChar);
string = new String[tokenizer.countTokens()];// 動態的決定數組的長度
while (tokenizer.hasMoreTokens()) {
string[i] = new String();
string[i] = tokenizer.nextToken();
i++;
}
return string;// 返回字符串數組
}
int countTokens()
計算在生成異常之前可以調用此 tokenizer 的 nextToken 方法的次數。
boolean hasMoreElements()
返回與 hasMoreTokens 方法相同的值。
boolean hasMoreTokens()
測試此 tokenizer 的字符串中是否還有更多的可用標記。
Object nextElement()
除了其聲明返回值是 Object 而不是 String 之外，它返回與 nextToken 方法相同的值。
String nextToken()
返回此 string tokenizer 的下一個標記。
String nextToken(String delim)
返回此 string tokenizer 的字符串中的下一個標記。
public class StringAnalytical {
// 字符串解析，將字符串轉根據分割符換成字符串數組
private String[] stringAnalytical(String string, char c) {
int i = 0;
int count = 0;
if (string.indexOf(c) == -1)
return new String[] { string };// 如果不含分割符則返回字符本身
char[] cs = string.toCharArray();
int length = cs.length;
for (i = 1; i < length - 1; i++) {// 過濾掉第一個和最后一個是分隔符的情況
if (cs[i] == c) {
count++;// 得到分隔符的個數
}
}
String[] strArray = new String[count + 1];
int k = 0, j = 0;
String str = string;
if ((k = str.indexOf(c)) == 0)// 去掉第一個字符是分隔符的情況
str = str.substring(k + 1);
if (str.indexOf(c) == -1)// 檢測是否含分隔符，如果不含則返回字符串
return new String[] { str };
while ((k = str.indexOf(c)) != -1) {// 字符串含分割符的時候
strArray[j++] = str.substring(0, k);
str = str.substring(k + 1);
if ((k = str.indexOf(c)) == -1 && str.length() > 0)
strArray[j++] = str.substring(0);
}
return strArray;
}
public void printString(String[] s) {
System.out.println("*********************************");
for (String str : s)
System.out.println(str);
}
public static void main(String[] args) {
String[] str = null;
StringAnalytical string = new StringAnalytical();
str = string.stringAnalytical("1aaa", '@');
string.printString(str);
str = string.stringAnalytical("2aaa@", '@');
string.printString(str);
str = string.stringAnalytical("@3aaa", '@');
string.printString(str);
str = string.stringAnalytical("4aaa@bbb", '@');
string.printString(str);
str = string.stringAnalytical("@5aaa@bbb", '@');
string.printString(str);
str = string.stringAnalytical("6aaa@bbb@", '@');
string.printString(str);
str = string.stringAnalytical("@7aaa@", '@');
string.printString(str);
str = string.stringAnalytical("@8aaa@bbb@", '@');
string.printString(str);
str = string.stringAnalytical("@9aaa@bbb@ccc", '@');
string.printString(str);
str = string.stringAnalytical("@10aaa@bbb@ccc@eee", '@');
string.printString(str);
}
}
摘要: import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar; import java.util.regex.Pattern;
import o...
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java訪問xml文件
- Java code
-
import java.io.*;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
public class xmljava
{
public static void main(String args[])
{
Element element=null;
File f =new File("a.xml");
DocumentBuilder db=null; //documentBuilder為抽象不能直接實例化(將XML文件轉換為DOM文件)
DocumentBuilderFactory dbf=null;
try{
dbf= DocumentBuilderFactory.newInstance(); //返回documentBuilderFactory對象
db =dbf.newDocumentBuilder();//返回db對象用documentBuilderFatory對象獲得返回documentBuildr對象
Document dt= db.parse(f); //得到一個DOM并返回給document對象
element = dt.getDocumentElement();//得到一個elment根元素
System.out.println("根元素："+element.getNodeName()); //獲得根節點
NodeList childNodes =element.getChildNodes() ; // 獲得根元素下的子節點
for (int i = 0; i < childNodes.getLength(); i++) // 遍歷這些子節點
{
Node node1 = childNodes.item(i); // childNodes.item(i); 獲得每個對應位置i的結點
if ("Account".equals(node1.getNodeName()))
{
// 如果節點的名稱為"Account"，則輸出Account元素屬性type
System.out.println("\r\n找到一篇賬號. 所屬區域: " + node1.getAttributes().getNamedItem ("type").getNodeValue() + ". ");
NodeList nodeDetail = node1.getChildNodes(); // 獲得<Accounts>下的節點
for (int j = 0; j < nodeDetail.getLength(); j++)
{ // 遍歷<Accounts>下的節點
Node detail = nodeDetail.item(j); // 獲得<Accounts>元素每一個節點
if ("code".equals(detail.getNodeName())) // 輸出code
System.out.println("卡號: " + detail.getTextContent());
else if ("pass".equals(detail.getNodeName())) // 輸出pass
System.out.println("密碼: " + detail.getTextContent());
else if ("name".equals(detail.getNodeName())) // 輸出name
System.out.println("姓名: " + detail.getTextContent());
else if ("money".equals(detail.getNodeName())) // 輸出money
System.out.println("余額: "+ detail.getTextContent());
}
}
}
}
catch(Exception e){System.out.println(e);}
}
}
- XML code
-
<?xml version="1.0" encoding="gbk"?>
<Accounts>
<Account type="by0003">
<code>100001</code>
<pass>123</pass>
<name>李四</name>
<money>1000000.00</money>
</Account>
<Account type="hz0001">
<code>100002</code>
<pass>123</pass>
<name>張三</name>
<money>1000.00</money>
</Account>
</Accounts>
方法沒有確認
import java.util.*;
public class Lottery {
public static void main(String[] args) {
int[] data1 = {3, 5, 6, 8, 9, 15, 18, 24, 27, 30, 32};
Random r = new Random();
int irdm = 0;
for(int i = 0; i < 7; i ++) {
irdm = r.nextInt(11 - i);
System.out.println(data1[irdm]);
for(int j = irdm; j < 11 - i - 1; j ++) {
data1[j] = data1[j + 1];
}
}
}
}
方法沒有確認不知道是否可行public class AAAAA {
public static void main(String[] args) {
int i = 0;
int j = 0;
int[] temp = new int[20];
for (j = 0; j < temp.length; j++) {
temp[j] = Math.random() * 100 + 1;
System.out.print(temp[j] + ","
;
}
HashSet hh = new HashSet();
while (hh.size() < 7) {
int aa = (int) (Math.random() * 100 + 1);
hh.add(aa);
}
System.out.println(hh.size());
Iterator ii = hh.iterator();
while (ii.hasNext()) {
System.out.print(ii.next() + ",";
}
}
}
java從指定數組中取不重復的7個隨機數
如何用java從指定數組中取不重復的7個隨機數，以下是我寫的代碼，但是是有重復的，哪位大俠賜教一下如何使用Random類的種子，幫我實現不重復的隨機數。。。
import java.util.*;
public class Lottery {
public static void main(String[] args)
{
int[] data1 = {3,5,6,8,9,15,18,24,27,30,32};
Random r=new Random();
StringBuffer str1=new StringBuffer();
for(int i=0;i<6;i++)
{
str1.append(data1[r.nextInt(11)]);
}
System.out.println(str1);
}
}
char []a={'v','f',',','e','f'};
Arrays.sort(a);
for(char b:a)
{
System.out.println(b);
}
/*
* $Header: /cvsroot/mvnforum/mvnforum/src/com/mvnforum/MVNForumGlobal.java,v 1.17 2005/01/18 11:52:08 minhnn Exp $
* $Author: minhnn $
* $Revision: 1.17 $
* $Date: 2005/01/18 11:52:08 $
*
* ====================================================================
*
* Copyright (C) 2002-2005 by MyVietnam.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
*
* All copyright notices regarding mvnForum MUST remain intact
* in the scripts and in the outputted HTML.
* The "powered by" text/logo with a link back to
* http://www.mvnForum.com and http://www.MyVietnam.net in the
* footer of the pages MUST remain visible when the pages
* are viewed on the internet or intranet.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Support can be obtained from support forums at:
* http://www.mvnForum.com/mvnforum/index
*
* Correspondence and Marketing Questions can be sent to:
* info@MyVietnam.net
*
* @author: Minh Nguyen minhnn@MyVietnam.net
* @author: Mai Nguyen mai.nh@MyVietnam.net
*/
package com.mvnforum;
public class MVNForumGlobal {
private MVNForumGlobal() {
}
/*************************************************************************
* NOTE: below constants can be changed for each build,
* these constant MUST NOT break the compatibility
*************************************************************************/
public final static String IMAGE_DIR = "/mvnplugin/mvnforum/images";
public final static String EMOTION_DIR = "/mvnplugin/mvnforum/images/emotion/";
public final static String CSS_FULLPATH = "/mvnplugin/mvnforum/css/style.css";
public final static String LOGO_FULLPATH = "/mvnplugin/mvnforum/images/logo.gif";
// Note that we cannot put / at the end because getRealPath will remove it in Tomcat 4.1.7 :((
public final static String UPLOADED_AVATAR_DIR = "/mvnplugin/mvnforum/upload/memberavatars";
public final static String UPLOADED_COMPANY_DIR = "/mvnplugin/mvnforum/upload/company";
public final static String COMPANY_DEFAULT_CSS_PATH = "/mvnplugin/mvnforum/upload/company/style.css";
public final static String COMPANY_DEFAULT_LOGO_PATH = "/mvnplugin/mvnforum/upload/company/logo.gif";
public final static String RESOURCE_BUNDLE_NAME = "mvnForum_i18n";
/** value to control the flood prevention. Note value from 0 to 999 is belong to mvnCore */
public final static Integer FLOOD_ID_NEW_POST = new Integer(1000);
public final static Integer FLOOD_ID_NEW_MEMBER = new Integer(1001);
public final static Integer FLOOD_ID_LOGIN = new Integer(1002);
public final static Integer FLOOD_ID_NEW_MESSAGE = new Integer(1003);
/** The maximum length of the email in database */
public final static int MAX_MEMBER_EMAIL_LENGTH = 60;
/** The maximum length of the member login name in database */
public final static int MAX_MEMBER_LOGIN_LENGTH = 30;
public final static String TEMPLATE_SENDACTIVATECODE_PREFIX = "sendactivemailtemplate";
public final static String TEMPLATE_SENDACTIVATECODE_SUBJECT = "sendactivemailtemplate-subject.ftl";
public final static String TEMPLATE_SENDACTIVATECODE_BODY = "sendactivemailtemplate-body.ftl";
public final static String TEMPLATE_FORGOTPASSWORD_PREFIX = "forgotpasswordtemplate";
public final static String TEMPLATE_FORGOTPASSWORD_SUBJECT = "forgotpasswordtemplate-subject.ftl";
public final static String TEMPLATE_FORGOTPASSWORD_BODY = "forgotpasswordtemplate-body.ftl";
public final static String TEMPLATE_WATCHMAIL_PREFIX = "watchmailtemplate";
public final static String TEMPLATE_WATCHMAIL_SUBJECT = "watchmailtemplate-subject.ftl";
public final static String TEMPLATE_WATCHMAIL_BODY = "watchmailtemplate-body.ftl";
// Constant for Company module
public final static String COMPANY_GROUP_FREFIX = "CompanyGroup: ";
}
/*
* $Header: /cvsroot/mvnforum/mvnforum/src/com/mvnforum/MVNForumFactoryConfig.java,v 1.12 2005/01/18 11:52:08 minhnn Exp $
* $Author: minhnn $
* $Revision: 1.12 $
* $Date: 2005/01/18 11:52:08 $
*
* ====================================================================
*
* Copyright (C) 2002-2005 by MyVietnam.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
*
* All copyright notices regarding mvnForum MUST remain intact
* in the scripts and in the outputted HTML.
* The "powered by" text/logo with a link back to
* http://www.mvnForum.com and http://www.MyVietnam.net in the
* footer of the pages MUST remain visible when the pages
* are viewed on the internet or intranet.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Support can be obtained from support forums at:
* http://www.mvnForum.com/mvnforum/index
*
* Correspondence and Marketing Questions can be sent to:
* info@MyVietnam.net
*
* @author: Luis Miguel Hernanz <luish@germinus.com>
* @author: Minh Nguyen minhnn@MyVietnam.net
*/
package com.mvnforum;
import java.io.File;
import net.myvietnam.mvncore.configuration.DOM4JConfiguration;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import net.myvietnam.mvncore.util.FileUtil;
/**
* Class that loads and makes accesible the factory configuration.
*
* @author <a href="luish@germinus.com">Luis Miguel Hernanz</a>
* @version $Revision: 1.12 $
*/
public class MVNForumFactoryConfig {
private static Log log = LogFactory.getLog(MVNForumFactoryConfig.class);
private static final String OPTION_FILE_NAME = "mvnforum.xml";
private static String authenticatorClassName = null;
private static String memberManagerClassName = "com.mvnforum.db.jdbc.MemberDAOImplJDBC";
private static String onlineUserFactoryClassName = "com.mvnforum.auth.OnlineUserFactoryImpl";
private static String requestProcessorClassName = "com.mvnforum.RequestProcessorDefault";
private static String luceneAnalyzerClassName = "org.apache.lucene.analysis.standard.StandardAnalyzer";
public static String getMemberManagerClassName() {
return memberManagerClassName;
}
public static String getOnlineUserFactoryClassName() {
return onlineUserFactoryClassName;
}
public static String getAuthenticatorClassName() {
return authenticatorClassName;
}
public static String getRequestProcessorClassName() {
return requestProcessorClassName;
}
public static String getLuceneAnalyzerClassName() {
return luceneAnalyzerClassName;
}
static {
try {
String strPathName = FileUtil.getServletClassesPath();
String configFilename = strPathName + OPTION_FILE_NAME;
DOM4JConfiguration conf = new DOM4JConfiguration(new File(configFilename));
memberManagerClassName = conf.getString("mvnforumfactoryconfig.member_implementation", memberManagerClassName);
onlineUserFactoryClassName = conf.getString("mvnforumfactoryconfig.onlineuser_implementation", onlineUserFactoryClassName);
authenticatorClassName = conf.getString("mvnforumfactoryconfig.authenticator_implementation", authenticatorClassName);
requestProcessorClassName = conf.getString("mvnforumfactoryconfig.requestprocessor_implementation", requestProcessorClassName);
luceneAnalyzerClassName = conf.getString("mvnforumfactoryconfig.lucene_analyzer_implementation", luceneAnalyzerClassName);
} catch (Exception e) {
log.error("Error loading the factory properties", e);
}
}
}
/*
* $Header: /cvsroot/mvnforum/mvnforum/src/com/mvnforum/MVNForumContextListener.java,v 1.6 2005/01/18 11:52:08 minhnn Exp $
* $Author: minhnn $
* $Revision: 1.6 $
* $Date: 2005/01/18 11:52:08 $
*
* ====================================================================
*
* Copyright (C) 2002-2005 by MyVietnam.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
*
* All copyright notices regarding mvnForum MUST remain intact
* in the scripts and in the outputted HTML.
* The "powered by" text/logo with a link back to
* http://www.mvnForum.com and http://www.MyVietnam.net in the
* footer of the pages MUST remain visible when the pages
* are viewed on the internet or intranet.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Support can be obtained from support forums at:
* http://www.mvnForum.com/mvnforum/index
*
* Correspondence and Marketing Questions can be sent to:
* info@MyVietnam.net
*
* @author: Minh Nguyen minhnn@MyVietnam.net
* @author: Mai Nguyen mai.nh@MyVietnam.net
*/
package com.mvnforum;
import java.sql.Timestamp;
import javax.servlet.*;
import net.myvietnam.mvncore.util.DateUtil;
import net.myvietnam.mvncore.util.FileUtil;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
public class MVNForumContextListener implements ServletContextListener {
private static Log log = LogFactory.getLog(MVNForumContextListener.class);
private static MVNForumContextListener instance;
private Timestamp startTimestamp;
/**
* The servlet context with which we are associated.
*/
private ServletContext context = null;
public MVNForumContextListener() {
instance = this;
}
/**
* Notification that the web application is ready to process requests.
*
* @param event ServletContextEvent
*/
public void contextInitialized(ServletContextEvent event) {
log.debug("contextInitialized");
this.context = event.getServletContext();
String realPath = context.getRealPath("/WEB-INF/classes");// Add '/' before WEB-INF to fix the Oracle 10G bug
FileUtil.setServletClassesPath(realPath);
startTimestamp = DateUtil.getCurrentGMTTimestamp();
}
/**
* Notification that the servlet context is about to be shut down.
*
* @param event ServletContextEvent
*/
public void contextDestroyed(ServletContextEvent event) {
log.debug("contextDestroyed");
this.context = null;
instance = null;
}
// below are add on method
public static MVNForumContextListener getInstance() {
return instance;
}
public Timestamp getStartTimestamp() {
return startTimestamp;
}
}
/*
* $Header: /cvsroot/mvnforum/mvnforum/src/com/mvnforum/MVNForumConstant.java,v 1.8 2005/01/18 11:52:08 minhnn Exp $
* $Author: minhnn $
* $Revision: 1.8 $
* $Date: 2005/01/18 11:52:08 $
*
* ====================================================================
*
* Copyright (C) 2002-2005 by MyVietnam.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
*
* All copyright notices regarding mvnForum MUST remain intact
* in the scripts and in the outputted HTML.
* The "powered by" text/logo with a link back to
* http://www.mvnForum.com and http://www.MyVietnam.net in the
* footer of the pages MUST remain visible when the pages
* are viewed on the internet or intranet.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Support can be obtained from support forums at:
* http://www.mvnForum.com/mvnforum/index
*
* Correspondence and Marketing Questions can be sent to:
* info@MyVietnam.net
*
* @author: Minh Nguyen minhnn@MyVietnam.net
* @author: Mai Nguyen mai.nh@MyVietnam.net
* @author: Igor Manic imanic@users.sourceforge.net
*/
package com.mvnforum;
public final class MVNForumConstant {
/** Cannot instantiate. */
private MVNForumConstant() {
}
/*************************************************************************
* NOTE: below constants MUST NOT be changed IN ALL CASES,
* or it will break the compatibility
*************************************************************************/
/** Guest/anonymous site visitor. */
public static final int MEMBER_ID_OF_GUEST = 0;
/** System administrator. */
public static final int MEMBER_ID_OF_ADMIN = 1;
/**
* The highest reserved MemberID.
* All IDs from 0 through this value should not be used for "regular" members.
*/
public static final int LAST_RESERVED_MEMBER_ID = 1;
/* IMPORTANT: When we have a group without group owner, GroupOwnerID is set to 0.
* Similiar is for other IDs in the database - 0 means there is no reference.
* Also, the other reason why MemberID=0 should not be used for Guest is
* that DBMS could refuse to insert a record with 0 in that field, since it's
* marked as non-null autoincrement primary key.
*/
/** Unused GroupID. */
public static final int GROUP_ID_UNUSED0 = 0;
/**
* Unused GroupID. In the previous versions of mvnForum it was used for some
* special purposes, but should not be used anymore.
*/
public static final int GROUP_ID_OF_GUEST = 1;
/** "Registered Members" virtual group. All members are listed in this group. */
public static final int GROUP_ID_OF_REGISTERED_MEMBERS = 2;
/**
* The highest reserved GroupID.
* All IDs from 0 through this value should not be used for "regular" groups.
*/
public static final int LAST_RESERVED_GROUP_ID = 2;
/** "Inbox" message folder created by default for each member. */
public static final String MESSAGE_FOLDER_INBOX = "Inbox";
/** "Sent" message folder created by default for each member. */
public static final String MESSAGE_FOLDER_SENT = "Sent";
/** "Draft" message folder created by default for each member. */
public static final String MESSAGE_FOLDER_DRAFT = "Draft";
/** "Trash" message folder created by default for each member. */
public static final String MESSAGE_FOLDER_TRASH = "Trash";
public static final String dtdschemaDecl="<!DOCTYPE mvnforum SYSTEM \"http://www.mvnforum.com/dtd/mvnforum_1_0_rc2.dtd\">";
public static final String VN_TYPER_MODE = "mvnforum.vntypermode";
}
摘要: /*
* $Header: /cvsroot/mvnforum/mvnforum/src/com/mvnforum/MVNForumConfig.java,v 1.75 2005/01/29 19:29:26 minhnn Exp $
* $Author: minhnn $
* $Revision: 1.75 $
* $Date: 2005/...
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/*
* $Header: /cvsroot/mvnforum/mvnforum/src/com/mvnforum/ManagerFactory.java,v 1.6 2005/01/18 11:52:08 minhnn Exp $
* $Author: minhnn $
* $Revision: 1.6 $
* $Date: 2005/01/18 11:52:08 $
*
* ====================================================================
*
* Copyright (C) 2002-2005 by MyVietnam.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
*
* All copyright notices regarding mvnForum MUST remain intact
* in the scripts and in the outputted HTML.
* The "powered by" text/logo with a link back to
* http://www.mvnForum.com and http://www.MyVietnam.net in the
* footer of the pages MUST remain visible when the pages
* are viewed on the internet or intranet.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Support can be obtained from support forums at:
* http://www.mvnForum.com/mvnforum/index
*
* Correspondence and Marketing Questions can be sent to:
* info@MyVietnam.net
*
* @author: Luis Miguel Hernanz <luish@germinus.com>
* @author: Minh Nguyen minhnn@MyVietnam.net
*/
package com.mvnforum;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.mvnforum.auth.Authenticator;
import com.mvnforum.auth.OnlineUserFactory;
/**
* Instance that returns the right implementation for the different
* parts of the mvnforum system.
*
* @author <a href="luish@germinus.com">Luis Miguel Hernanz</a>
* @version $Revision: 1.6 $
*/
// @todo : split this class to new class DAOFactory
public class ManagerFactory {
private static Log log = LogFactory.getLog(ManagerFactory.class);
/**
* Creates a new <code>ManagerFactory</code> instance.
*/
protected ManagerFactory() {}
private static OnlineUserFactory onlineUserFactory = null;
private static Authenticator authenticator = null;
private static RequestProcessor requestProcessor = null;
public static synchronized OnlineUserFactory getOnlineUserFactory() {
if (onlineUserFactory == null) {
try {
Class c = Class.forName(MVNForumFactoryConfig.getOnlineUserFactoryClassName());
onlineUserFactory = (OnlineUserFactory) c.newInstance();
log.info("onlineUserFactory = " + onlineUserFactory);
} catch (Exception e) {
log.error("Error returning the online user factory.", e);
throw new RuntimeException(e.getMessage());
}
}
return onlineUserFactory;
}
public static synchronized Authenticator getAuthenticator() {
try {
String authenticatorClass = MVNForumFactoryConfig.getAuthenticatorClassName();
if ((null != authenticatorClass) && !authenticatorClass.trim().equals("")) {
log.debug("Using the authenticator: " + authenticatorClass);
if (authenticator == null) {
Class c = Class.forName(authenticatorClass);
authenticator = (Authenticator) c.newInstance();
log.info("authenticator = " + authenticator);
}
return authenticator;
}
} catch (Exception e){
log.error("Error getting the authentication object", e);
}
return null;
}
public static synchronized RequestProcessor getRequestProcessor() {
if (requestProcessor == null) {
try {
Class c = Class.forName(MVNForumFactoryConfig.getRequestProcessorClassName());
requestProcessor = (RequestProcessor) c.newInstance();
log.info("requestProcessor = " + requestProcessor);
} catch (Exception e) {
// This should never happen
log.error("Error returning the requestProcessor.", e);
throw new RuntimeException(e.getMessage());
}
}
return requestProcessor;
}
}
/*
* $Header: /cvsroot/mvnforum/mvnforum/src/com/mvnforum/URLMap.java,v 1.3 2005/01/18 11:52:08 minhnn Exp $
* $Author: minhnn $
* $Revision: 1.3 $
* $Date: 2005/01/18 11:52:08 $
*
* ====================================================================
*
* Copyright (C) 2002-2005 by MyVietnam.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
*
* All copyright notices regarding mvnForum MUST remain intact
* in the scripts and in the outputted HTML.
* The "powered by" text/logo with a link back to
* http://www.mvnForum.com and http://www.MyVietnam.net in the
* footer of the pages MUST remain visible when the pages
* are viewed on the internet or intranet.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Support can be obtained from support forums at:
* http://www.mvnForum.com/mvnforum/index
*
* Correspondence and Marketing Questions can be sent to:
* info@MyVietnam.net
*
* @author: Minh Nguyen minhnn@MyVietnam.net
* @author: Mai Nguyen mai.nh@MyVietnam.net
*/
package com.mvnforum;
public class URLMap {
private String response = null;
public URLMap() {
}
public void setResponse(String newvalue) {
response = newvalue;
}
public String getResponse() {
return response;
}
}
/*
* $Header: /cvsroot/mvnforum/mvnforum/src/com/mvnforum/RequestProcessorDefault.java,v 1.3 2005/01/18 11:52:08 minhnn Exp $
* $Author: minhnn $
* $Revision: 1.3 $
* $Date: 2005/01/18 11:52:08 $
*
* ====================================================================
*
* Copyright (C) 2002-2005 by MyVietnam.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
*
* All copyright notices regarding mvnForum MUST remain intact
* in the scripts and in the outputted HTML.
* The "powered by" text/logo with a link back to
* http://www.mvnForum.com and http://www.MyVietnam.net in the
* footer of the pages MUST remain visible when the pages
* are viewed on the internet or intranet.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Support can be obtained from support forums at:
* http://www.mvnForum.com/mvnforum/index
*
* Correspondence and Marketing Questions can be sent to:
* info@MyVietnam.net
*
* @author: Luis Miguel Hernanz <luish@germinus.com>
* @author: Minh Nguyen minhnn@MyVietnam.net
*/
package com.mvnforum;
import java.io.UnsupportedEncodingException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Empty implementation of the RequestProcessor interface.
*
* @author <a href="luish@germinus.com">Luis Miguel Hernanz</a>
* @version $Revision: 1.3 $
*/
public class RequestProcessorDefault implements RequestProcessor {
private static Log log = LogFactory.getLog(RequestProcessorDefault.class);
/**
* This is the first method called in the request processing. This
* method returns always <code>null</code>.
*
* @param request a <code>HttpServletRequest</code> value
* @param response a <code>HttpServletResponse</code> value
*/
public String preLogin(HttpServletRequest request, HttpServletResponse response) {
try {
request.setCharacterEncoding("utf-8");
} catch (UnsupportedEncodingException e){
log.warn("Error setting the character encoding from the request", e);
}
return null;
}
/**
* The method receives the user request just before the
* authentication has been checked. This method always returns
* <code>null</code>.
*
* @param request a <code>HttpServletRequest</code> value
* @param response a <code>HttpServletResponse</code> value
*/
public String preProcess(HttpServletRequest request, HttpServletResponse response) {
return null;
}
/**
* This method is called just before the call to the final request
* dispatcher forward. This method always returns
* <code>responseURI</code>.
*
* @param request a <code>HttpServletRequest</code> value
* @param response a <code>HttpServletResponse</code> value
* @param responseURI the path to which the control will be
* forwarded after this method has finished.
*/
public String postProcess(HttpServletRequest request, HttpServletResponse response, String responseURI) {
return responseURI;
}
}
/*
* $Header: /cvsroot/mvnforum/mvnforum/src/com/mvnforum/RequestProcessor.java,v 1.3 2005/01/18 11:52:08 minhnn Exp $
* $Author: minhnn $
* $Revision: 1.3 $
* $Date: 2005/01/18 11:52:08 $
*
* ====================================================================
*
* Copyright (C) 2002-2005 by MyVietnam.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
*
* All copyright notices regarding mvnForum MUST remain intact
* in the scripts and in the outputted HTML.
* The "powered by" text/logo with a link back to
* http://www.mvnForum.com and http://www.MyVietnam.net in the
* footer of the pages MUST remain visible when the pages
* are viewed on the internet or intranet.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Support can be obtained from support forums at:
* http://www.mvnForum.com/mvnforum/index
*
* Correspondence and Marketing Questions can be sent to:
* info@MyVietnam.net
*
* @author: Luis Miguel Hernanz <luish@germinus.com>
* @author: Minh Nguyen minhnn@MyVietnam.net
*/
package com.mvnforum;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Interface to hook additional preprocessing to the user request.
* This interface is meatn as extension points to ease the integration
* of the forum system with external systems.
*
* @author <a href="luish@germinus.com">Luis Miguel Hernanz</a>
* @version $Revision: 1.3 $
*/
public interface RequestProcessor {
/**
* This is the first method called in the request processing.
*
* @param request a <code>HttpServletRequest</code> value
* @param response a <code>HttpServletResponse</code> value
* @return the new responseURI to redirect to. The control will be
* forwarded to this page (if responseURI is an jsp). No furher
* processing will take place.
*/
public String preLogin(HttpServletRequest request, HttpServletResponse response);
/**
* The method receives teh user request just before the
* authentication has been checked.
*
* @param request a <code>HttpServletRequest</code> value
* @param response a <code>HttpServletResponse</code> value
* @return the new responseURI to redirect to.
*/
public String preProcess(HttpServletRequest request, HttpServletResponse response);
/**
* This method is called just before the call to the final request
* dispatcher forward.
*
* @param request a <code>HttpServletRequest</code> value
* @param response a <code>HttpServletResponse</code> value
* @param responseURI the path to which the control will be
* forwarded after this method has finished.
* @return the new responseURI to redirect to.
*/
public String postProcess(HttpServletRequest request, HttpServletResponse response, String responseURI);
}
/*
* $Header: /cvsroot/mvnforum/mvnforum/src/com/mvnforum/MyUtil.java,v 1.30 2005/01/29 11:58:09 minhnn Exp $
* $Author: minhnn $
* $Revision: 1.30 $
* $Date: 2005/01/29 11:58:09 $
*
* ====================================================================
*
* Copyright (C) 2002-2005 by MyVietnam.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
*
* All copyright notices regarding mvnForum MUST remain intact
* in the scripts and in the outputted HTML.
* The "powered by" text/logo with a link back to
* http://www.mvnForum.com and http://www.MyVietnam.net in the
* footer of the pages MUST remain visible when the pages
* are viewed on the internet or intranet.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Support can be obtained from support forums at:
* http://www.mvnForum.com/mvnforum/index
*
* Correspondence and Marketing Questions can be sent to:
* info@MyVietnam.net
*
* @author: Minh Nguyen minhnn@MyVietnam.net
* @author: Mai Nguyen mai.nh@MyVietnam.net
*/
package com.mvnforum;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.*;
import javax.servlet.ServletContext;
import javax.servlet.http.*;
import com.mvnforum.auth.*;
import com.mvnforum.common.PrivateMessageUtil;
import com.mvnforum.db.*;
import com.mvnforum.search.member.MemberIndexer;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
import net.myvietnam.mvncore.MVNCoreInfo;
import net.myvietnam.mvncore.exception.*;
import net.myvietnam.mvncore.filter.*;
import net.myvietnam.mvncore.util.*;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
public class MyUtil {
private static Log log = LogFactory.getLog(MyUtil.class);
private static RankCache rankCache = RankCache.getInstance();
public static String filter(String input, boolean enableHTML, boolean enableEmotion,
boolean enableMVNCode, boolean enableNewLine, boolean enableURL) {
String output = input;
if (enableHTML) {
output = EnableHtmlTagFilter.filter(output);
} else {
output = DisableHtmlTagFilter.filter(output);
}
if (enableEmotion) {
output = EnableEmotionFilter.filter(output, ParamUtil.getContextPath() + MVNForumGlobal.EMOTION_DIR);
}
if (enableMVNCode) {
output = EnableMVNCodeFilter.filter(output);
}
if (enableNewLine) {
output = HtmlNewLineFilter.filter(output);
}
if (enableURL) {
output = URLFilter.filter(output);
}
return output;
}
public static String getMemberTitle(int postCount) {
String title = "";
try {
ArrayList rankBeans = rankCache.getBeans();
for (int i = 0; i < rankBeans.size(); i++) {
RankBean rankBean = (RankBean)rankBeans.get(i);
if (rankBean.getRankMinPosts() <= postCount) {
title = EnableMVNCodeFilter.filter(rankBean.getRankTitle());
} else {
break;
}
}//for
} catch (Exception ex) {
log.error("Exception in getMemberTitile", ex);
}
return title;
}
public static String getForumIconName(long lastLogon, long lastPost) {
String forumIcon = null;
if (lastLogon > lastPost) {// no new post
forumIcon = "f_norm_no.gif";
} else {// new post
forumIcon = "f_norm_new.gif";
}
return forumIcon;
}
public static String getThreadIconName(long lastLogon, long lastPost, int postCount) {
String threadIcon = null;
if (postCount < MVNForumConfig.getHotTopicThreshold()) {//not hot topic
if (lastLogon > lastPost) {// no new post
threadIcon = "f_norm_no.gif";
} else {// new post
threadIcon = "f_norm_new.gif";
}
} else {// hot topic
if (lastLogon > lastPost) {// no new post
threadIcon = "f_hot_no.gif";
} else {// new post
threadIcon = "f_hot_new.gif";
}
}
return threadIcon;
}
public static String getThreadStatusName(Locale locale, int threadStatus) {
String result = null;
switch (threadStatus) {
case ThreadBean.THREAD_STATUS_DEFAULT:
result = MVNForumResourceBundle.getString(locale, "mvnforum.common.thread.status.normal");
break;
case ThreadBean.THREAD_STATUS_DISABLED:
result = MVNForumResourceBundle.getString(locale, "mvnforum.common.thread.status.disabled");
break;
case ThreadBean.THREAD_STATUS_LOCKED:
result = MVNForumResourceBundle.getString(locale, "mvnforum.common.thread.status.locked");
break;
case ThreadBean.THREAD_STATUS_CLOSED:
result = MVNForumResourceBundle.getString(locale, "mvnforum.common.thread.status.closed");
break;
default:
//throw new AssertionException("Cannot find matching thread status.");
}
return result;
}
public static String getThreadTypeName(Locale locale, int threadType) {
String result = "Unknown";
switch (threadType) {
case ThreadBean.THREAD_TYPE_DEFAULT:
result = MVNForumResourceBundle.getString(locale, "mvnforum.common.thread.type.normal_thread");
break;
case ThreadBean.THREAD_TYPE_STICKY:
result = MVNForumResourceBundle.getString(locale, "mvnforum.common.thread.type.sticky_thread");
break;
case ThreadBean.THREAD_TYPE_FORUM_ANNOUNCEMENT:
result = MVNForumResourceBundle.getString(locale, "mvnforum.common.thread.type.announcement_thread");
break;
case ThreadBean.THREAD_TYPE_GLOBAL_ANNOUNCEMENT:
result = MVNForumResourceBundle.getString(locale, "mvnforum.common.thread.type.global_announcement_thread");
break;
default:
//throw new AssertionException("Cannot find matching thread type.");
}
return result;
}
public static String getForumStatusName(Locale locale, int forumStatus) {
String result = null;
switch (forumStatus) {
case ForumBean.FORUM_STATUS_DEFAULT:
result = MVNForumResourceBundle.getString(locale, "mvnforum.common.forum.status.normal");
break;
case ForumBean.FORUM_STATUS_DISABLED:
result = MVNForumResourceBundle.getString(locale, "mvnforum.common.forum.status.disabled");
break;
case ForumBean.FORUM_STATUS_LOCKED:
result = MVNForumResourceBundle.getString(locale, "mvnforum.common.forum.status.locked");
break;
case ForumBean.FORUM_STATUS_CLOSED:
result = MVNForumResourceBundle.getString(locale, "mvnforum.common.forum.status.closed");
break;
default:
//throw new AssertionException("Cannot find matching forum status.");
}
return result;
}
public static boolean canViewAnyForumInCategory(int categoryID, MVNForumPermission permission) {
try {
Collection forumBeans = ForumCache.getInstance().getBeans();
for (Iterator iter = forumBeans.iterator(); iter.hasNext(); ) {
ForumBean forumBean = (ForumBean)iter.next();
if (forumBean.getCategoryID() == categoryID) {
if (canViewForum(forumBean, permission)) {
return true;
}
}
}
} catch (DatabaseException ex) {
log.error("Cannot load the data in table Forum", ex);
}
return false;
}
public static boolean canViewForum(ForumBean forumBean, MVNForumPermission permission) {
if (permission.canReadPost(forumBean.getForumID()) &&
(forumBean.getForumStatus() != ForumBean.FORUM_STATUS_DISABLED) ) {
return true;
}
return false;
}
public static int getViewablePosts(Collection forumBeans, MVNForumPermission permission) {
int count = 0;
for (Iterator iter = forumBeans.iterator(); iter.hasNext(); ) {
ForumBean forumBean = (ForumBean)iter.next();
if (canViewForum(forumBean, permission)) {
count += forumBean.getForumPostCount();
}
}
return count;
}
public static int getViewableThreads(Collection forumBeans, MVNForumPermission permission) {
int count = 0;
for (Iterator iter = forumBeans.iterator(); iter.hasNext(); ) {
ForumBean forumBean = (ForumBean)iter.next();
if (canViewForum(forumBean, permission)) {
count += forumBean.getForumThreadCount();
}
}
return count;
}
public static int getViewableForums(Collection forumBeans, MVNForumPermission permission) {
int count = 0;
for (Iterator iter = forumBeans.iterator(); iter.hasNext(); ) {
ForumBean forumBean = (ForumBean)iter.next();
if (canViewForum(forumBean, permission)) {
count++;
}
}
return count;
}
public static int getViewableCategories(Collection categoryBeans, MVNForumPermission permission) {
int count = 0;
for (Iterator iter = categoryBeans.iterator(); iter.hasNext(); ) {
CategoryBean categoryBean = (CategoryBean)iter.next();
if (canViewAnyForumInCategory(categoryBean.getCategoryID(), permission)) {
count++;
}
}
return count;
}
/**
* Get the String with a slash character '/' before the locale name
* @param localeName the user's preferred locale
* @return the String with a slash character '/' before the locale name if
* this locale is configed to support it. Otherwise,
* an empty String will be return
*/
public static String getLocaleNameAndSlash(String localeName) {
if ( (localeName == null) || (localeName.length() == 0) ) {
return "";
}
String retValue = "";
String[] supportedLocales = MVNForumConfig.getSupportedLocaleNames();
if (supportedLocales == null) {
log.error("Assertion in MyUtil.getLocaleNameAndSlash. Please check your configuration.");
return "";
}
for (int i = 0; i < supportedLocales.length; i++) {
if (localeName.equals(supportedLocales[i])) {
retValue = "/" + localeName;
break;
}
}
return retValue;
}
public static String getCompanyCssPath(CompanyBean companyBean, String contextPath) {
String cssPath = null;
if (companyBean.getCompanyCss().length() > 0) {
cssPath = companyBean.getCompanyCss();
} else {
// use default company css
cssPath = MVNForumGlobal.COMPANY_DEFAULT_CSS_PATH;
}
return contextPath + cssPath;
}
public static String getCompanyLogoPath(CompanyBean companyBean, String contextPath) {
String logoPath = null;
if (companyBean.getCompanyLogo().length() > 0) {
logoPath = companyBean.getCompanyLogo();
} else {
// use default company logo
logoPath = MVNForumGlobal.COMPANY_DEFAULT_LOGO_PATH;
}
return contextPath + logoPath;
}
/**
* Get the locale from locale name
* @param localeName : in this format la_CO_VA, eg. en_US
* @return the locale instance of the localeName
*/
public static Locale getLocale(String localeName) {
// now, find out the 3 elements of a locale: language, country, variant
String[] localeElement = StringUtil.getStringArray(localeName, "_");
String language = "";
String country = "";
String variant = "";
if (localeElement.length >= 1) {
language = localeElement[0];
}
if (localeElement.length >= 2) {
country = localeElement[1];
}
if (localeElement.length >= 3) {
variant = localeElement[2];
}
return new Locale(language, country, variant);
}
public static void ensureCorrectCurrentPassword(HttpServletRequest request)
throws BadInputException, AssertionException, DatabaseException, AuthenticationException {
OnlineUser onlineUser = OnlineUserManager.getInstance().getOnlineUser(request);
OnlineUserFactory onlineUserFactory = ManagerFactory.getOnlineUserFactory();
try {
if (onlineUser.getAuthenticationType() == OnlineUser.AUTHENTICATION_TYPE_REALM) {
onlineUserFactory.ensureCorrectPassword(onlineUser.getMemberName(), OnlineUserManager.PASSWORD_OF_METHOD_REALM, true);
} else if (onlineUser.getAuthenticationType() == OnlineUser.AUTHENTICATION_TYPE_CUSTOMIZATION) {
if(MVNForumConfig.getEnablePasswordlessAuth()) {
// dont need password
onlineUserFactory.ensureCorrectPassword(onlineUser.getMemberName(), OnlineUserManager.PASSWORD_OF_METHOD_CUSTOMIZATION, true);
} else {
// must have password
// @todo: implement this case by using Authenticator
onlineUserFactory.ensureCorrectPassword(onlineUser.getMemberName(), OnlineUserManager.PASSWORD_OF_METHOD_CUSTOMIZATION, true);
}
} else {
//This user did not login by REALM or CUSTOMIZATION
String memberPassword = "";
String memberPasswordMD5 = ParamUtil.getParameter(request, "md5pw", false);
if (memberPasswordMD5.length() == 0 || (memberPasswordMD5.endsWith("==") == false)) {
// md5 is not valid, try to use unencoded password method
memberPassword = ParamUtil.getParameterPassword(request, "MemberCurrentMatkhau", 3, 0);
}
if (memberPassword.length() > 0) {
// that is we cannot find the md5 password
onlineUserFactory.ensureCorrectPassword(onlineUser.getMemberName(), memberPassword, false);
} else {
// have the md5, go ahead
onlineUserFactory.ensureCorrectPassword(onlineUser.getMemberName(), memberPasswordMD5, true);
}
}
} catch (AuthenticationException e) {
Locale locale = I18nUtil.getLocaleInRequest(request);
String localizedMessage = MVNForumResourceBundle.getString(locale, "mvncore.exception.BadInputException.wrong_password");
throw new BadInputException(localizedMessage);
//throw new BadInputException("You have typed the wrong password. Cannot proceed.");
}
}
public static void writeMvnForumImage(HttpServletRequest request, HttpServletResponse response) throws IOException {
BufferedImage image = MVNForumInfo.getImage();
OutputStream outputStream = null;
try {
outputStream = response.getOutputStream();
response.setContentType("image/jpeg");
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(outputStream);
encoder.encode(image);
outputStream.flush();
} catch (IOException ex) {
throw ex;
} finally {
if (outputStream != null) {
try {
outputStream.close();
} catch (IOException ex) { }
}
}
}
public static void writeMvnCoreImage(HttpServletRequest request, HttpServletResponse response) throws IOException {
BufferedImage image = MVNCoreInfo.getImage();
OutputStream outputStream = null;
try {
outputStream = response.getOutputStream();
response.setContentType("image/jpeg");
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(outputStream);
encoder.encode(image);
outputStream.flush();
} catch (IOException ex) {
throw ex;
} finally {
if (outputStream != null) {
try {
outputStream.close();
} catch (IOException ex) { }
}
}
}
public static void checkClassName(Locale locale, String className, boolean required) throws BadInputException {
if (required == false) {
if (className.length() == 0) return;
}
try {
Class.forName(className);
} catch (ClassNotFoundException ex) {
throw new BadInputException("Cannot load class: " + className);
}
}
public static void saveVNTyperMode(HttpServletRequest request, HttpServletResponse response) {
String vnTyperMode = ParamUtil.getParameter(request, "vnselector");
if (vnTyperMode.equals("VNI") || vnTyperMode.equals("TELEX") ||
vnTyperMode.equals("VIQR") || vnTyperMode.equals("NOVN")) {
Cookie typerModeCookie = new Cookie(MVNForumConstant.VN_TYPER_MODE, vnTyperMode);
typerModeCookie.setPath("/");
response.addCookie(typerModeCookie);
}
}
public static Hashtable checkMembers(String[] memberNames, Locale locale)
throws AssertionException, DatabaseException, BadInputException {
Hashtable memberMap = new Hashtable();
boolean isFailed = false;
StringBuffer missingNames = new StringBuffer(512);
for (int i = 0; i < memberNames.length; i++) {
int receivedMemberID = -1;
String memberName = memberNames[i];
StringUtil.checkGoodName(memberName);
try {
receivedMemberID = DAOFactory.getMemberDAO().getMemberIDFromMemberName(memberName);
} catch (ObjectNotFoundException ex) {
isFailed = true;
if (missingNames.length() > 0) {
missingNames.append(", ");
}
missingNames.append(memberName);
continue;
}
memberMap.put(new Integer(receivedMemberID), memberName);
} // end for
if (isFailed) { // the receivers does not exist.
String localizedMessage = MVNForumResourceBundle.getString(locale, "mvncore.exception.BadInputException.receivers_are_not_members", new Object[] {missingNames});
throw new BadInputException(localizedMessage);
}
return memberMap;
}
}
/*
* $Header: /cvsroot/mvnforum/mvnforum/src/com/mvnforum/MVNForumResourceBundle.java,v 1.6 2005/01/18 11:52:08 minhnn Exp $
* $Author: minhnn $
* $Revision: 1.6 $
* $Date: 2005/01/18 11:52:08 $
*
* ====================================================================
*
* Copyright (C) 2002-2005 by MyVietnam.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
*
* All copyright notices regarding mvnForum MUST remain intact
* in the scripts and in the outputted HTML.
* The "powered by" text/logo with a link back to
* http://www.mvnForum.com and http://www.MyVietnam.net in the
* footer of the pages MUST remain visible when the pages
* are viewed on the internet or intranet.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Support can be obtained from support forums at:
* http://www.mvnForum.com/mvnforum/index
*
* Correspondence and Marketing Questions can be sent to:
* info@MyVietnam.net
*
* @author: Minh Nguyen minhnn@MyVietnam.net
* @author: Pavel Av
*/
package com.mvnforum;
import java.util.Locale;
import java.util.ResourceBundle;
import net.myvietnam.mvncore.i18n.CacheResourceBundle;
public class MVNForumResourceBundle {
private static CacheResourceBundle cacheResourceBundle = new CacheResourceBundle(MVNForumGlobal.RESOURCE_BUNDLE_NAME);
private MVNForumResourceBundle() {
}
public static ResourceBundle getResourceBundle(Locale locale) {
return cacheResourceBundle.getResourceBundle(locale);
}
public static String getString(Locale locale, String key) {
return cacheResourceBundle.getString(locale, key);
}
public static String getString(Locale locale, String key, Object[] args) {
return cacheResourceBundle.getString(locale, key, args);
}
}
/*
* $Header: /cvsroot/mvnforum/mvnforum/src/com/mvnforum/MVNForumInfo.java,v 1.36.2.2 2005/06/17 17:53:37 minhnn Exp $
* $Author: minhnn $
* $Revision: 1.36.2.2 $
* $Date: 2005/06/17 17:53:37 $
*
* ====================================================================
*
* Copyright (C) 2002-2005 by MyVietnam.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
*
* All copyright notices regarding mvnForum MUST remain intact
* in the scripts and in the outputted HTML.
* The "powered by" text/logo with a link back to
* http://www.mvnForum.com and http://www.MyVietnam.net in the
* footer of the pages MUST remain visible when the pages
* are viewed on the internet or intranet.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Support can be obtained from support forums at:
* http://www.mvnForum.com/mvnforum/index
*
* Correspondence and Marketing Questions can be sent to:
* info@MyVietnam.net
*
* @author: Minh Nguyen minhnn@MyVietnam.net
* @author: Mai Nguyen mai.nh@MyVietnam.net
*/
package com.mvnforum;
import java.awt.*;
import java.awt.image.BufferedImage;
public class MVNForumInfo {
private MVNForumInfo() {
}
private static String PRODUCT_NAME = "mvnForum";
private static String PRODUCT_DESC = "mvnForum 1.0.0 RC4 Update 4";
private static String PRODUCT_VERSION = "1.0.0-RC4_04";
private static String PRODUCT_RELEASE_DATE = "18 June 2005";
private static String PRODUCT_HOMEPAGE = "http://www.mvnForum.com";
public static String getProductName() {
return PRODUCT_NAME;
}
public static String getProductDesc() {
return PRODUCT_DESC;
}
public static String getProductVersion() {
return PRODUCT_VERSION;
}
public static String getProductReleaseDate() {
return PRODUCT_RELEASE_DATE;
}
public static String getProductHomepage() {
return PRODUCT_HOMEPAGE;
}
public static BufferedImage getImage() {
String str = PRODUCT_VERSION + " on " + PRODUCT_RELEASE_DATE;
int IMAGE_WIDTH = 250;
int IMAGE_HEIGHT = 30;
BufferedImage bufferedImage = new BufferedImage(IMAGE_WIDTH, IMAGE_HEIGHT, BufferedImage.TYPE_INT_RGB);
Graphics2D g = bufferedImage.createGraphics();
g.setBackground(Color.blue);
g.setColor(Color.white);
g.draw3DRect(0, 0, IMAGE_WIDTH, IMAGE_HEIGHT, false);
FontMetrics fontMetrics = g.getFontMetrics();
int strWidth = fontMetrics.stringWidth(str);
int strHeight = fontMetrics.getAscent() + fontMetrics.getDescent();
g.drawString(str, (IMAGE_WIDTH - strWidth) / 2, IMAGE_HEIGHT - ((IMAGE_HEIGHT - strHeight) / 2) - fontMetrics.getDescent());
g.dispose(); // free resource
return bufferedImage;
}
}
代碼的復用有兩種方法————1就是直接在新類中生成舊有的類的對象 （合成）2是創建一個新的類 這個類會全盤接受舊有的類 并且在不對舊有類修改的前提下 添加新的代碼（繼承）
合成所使用的方法
只要把對象的引用reference放到新的類里面就可以了。當primitive數據作為類的成員時候會自動初始化為零，對象的reference也會為null，這時候調用這個reference會拋出nullpoint異常。
reference的初始化有以下三種方式：
1 在定義對象的時候。這就意味著在調用構造函數之前，他們已經初始化完畢了。
2在這個類的構造函數里。
3在即將使用那個對象之前。如果碰到創建對象的代價很高，或者不是每次都需要創建對象的時候，這種做法就能降低程序的開銷。
繼承所使用的方法
繼承的時候 必須使用extends關鍵詞和基類的名字。之后新類就會自動獲得基類的全部成員和方法。繼承不會限定只能使用基類的方法。也可以往派生類里加入新的方法。
基類的初始化
當創建一個派生類的對象的時候，這個對象立門還有一個基類的對象。這個對象同基類自己創建的對象沒有任何的差別。只是從外面看來這個對象是被包裹在派生類的對象里面。
基類的初始化只有一個方法能保證：調用基類的構造函數來進行初始化，只有這樣才能掌握怎樣才能正確地進行初始化的信息和權限。java會讓派生類的構造函數自動地調用基類的構造函數。
帶參數的構造函數
調用帶參數的構造函數必須使用super關鍵詞以及合適的參數明確調用基類的構造函數。
確保進行妥善地清理
一般情況下java會將需要清理的對象留給垃圾回收器去處理，它不會主動的進行清理。由于不知道垃圾回收器甚么時候啟動，也不知道會不會啟動，所有需要進行清理，就必須明確地寫一個專門干這件事情的方法，為了應付異常，還要將這個方法放入finally子句里面去。不要去調用finalize方法。
用合成還是繼承
一般來說，合成用于新類要使用舊類的功能，而不是其接口的場合，也就是說把對象嵌進去，用它來實現新類的功能，但用戶看到的是新類的接口，而不是嵌進去的對象的接口，因此在新類里嵌入private的舊類對象，有時為了讓用戶直接訪問新類的各個組成部分也可以嵌入public的舊類對象。通常都應該將基類的成員數據定義為privite類型。繼承表達的是一種“是（is－a）”關系，合成表達的是“有（has－a）”關系，對于一些需要對外部世界隱藏，但要對它的繼承類開放的基類 可以使用protected來定義那些開放的部分。最好的做法是，將數據成員設成private 的；你應該永遠保留修改底層實現的權利。然后用protected 權限的方法來控制繼承類的訪問權限。
漸進式的開發
繼承的優點之一就是，它支持漸進式的開發(incremental develop)。添加新的代碼的時候，不會給老代碼帶來bug；實際上新的bug 全都被圈在新代碼里。通過繼承已有的，已經能正常工作的類，然后再添加一些數據成員和方法(以及重新定義一些原有的方法)，你可以不去修改那些可能還有人在用的老代碼，因而也就不會造成bug 了。一旦發現了bug，你就知道它肯定是在新代碼里。相比要去修改老代碼，新代碼會短很多，讀起來也更簡單。繼承實質上是在表達這樣一種關系：“新的類是一種舊的類”。
上傳
繼承最重要的特征不在于它為新類提供了方法，而是它表達了新類同基類之間的關系。這種關系可以被歸納為一句話“新類就是一種原有的類。” (upcasting)”。上傳總是安全的，因為你是把一個較具體的類型轉換成較為一般的類型。也就是說派生類是基類的超集(superset)。它可能會有一些基類所沒有的方法，但是它最少要有基類的方法。在上傳過程中，類的接口只會減小，不會增大。這就是為什么編譯器會允許你不作任何明確的類型轉換或特殊表示就進行上傳的原因了。
合成還是繼承，再探討
在判斷該使用合成還是繼承的時候，有一個最簡單的辦法，就是問一下你是不是會把新類上傳給基類。如果你必須上傳，那么繼承就是必須的，如果不需要上傳，那么就該再看看是不是應該用繼承了。
final 關鍵詞
final 的三種用途：數據(data)，方法(method)和類(class)。
Final 的數據
很多編程語言都有通知編譯器“這是段『常量(constant)』 數據”的手段。常量能用于下列兩種情況：
1. 可以是“編譯時的常量(compile-time constant)”，這樣就再也不能改了。
2. 也可以是運行時初始化的值，這個值你以后就不想再改了。
如果是編譯時的常量，編譯器會把常量放到算式里面；這樣編譯的時候就能進行計算，因此也就降低了運行時的開銷。在Java 中這種常量必須是primitive 型的，而且要用final 關鍵詞表示。這種常量的賦值必須在定義的時候進行。
一個既是static 又是final 的數據成員會只占據一段內存，并且不可修改。
當final 不是指primitive，而是用于對象的reference 的時候，意思就有點搞了。對primitive 來說，final 會將這個值定義成常量，但是對于對象的reference 而言，final 的意思則是這個reference 是常量。初始化的時候，一旦將reference 連到了某個對象，那么它就再也不能指別的對象了。但是這個對象本身是可以修改的；Java 沒有提供將某個對象作成常量的方法。(但是你可以自己寫一個類，這樣就能把類當做常量了。)這種局限性也體現在數組上，因為它也是一個對象。
空白的final 數據 (Blank finals)
Java 能讓你創建“空白的final 數據(blank finals)”，也就是說把數據成員聲明成final 的，但卻沒給初始化的值。碰到這種情況，你必須先進行初始化，再使用空白的final 數據成員，而且編譯器會強制你這么做。不過，空白的final 數據也提供了一種更為靈活的運用final 關鍵詞方法，比方說，現在對象里的final 數據就能在保持不變性的同時又有所不同了。
你一定得為final 數據賦值，要么是在定義數據的時候用一個表達式賦值，要么是在構造函數里面進行賦值。為了確保final 數據在使用之前已經進行了初始化，這一要求是強制性的。
Final 的參數
Java 允許你在參數表中聲明參數是final 的，這樣參數也編程final了。也就是說，你不能在方法里讓參數reference 指向另一個對象了。
Final 方法
使用final 方法的目的有二。第一，為方法上“鎖”，禁止派生類進行修改。這是出于設計考慮。當你希望某個方法的功能，能在繼承過程中被保留下來，并且不被覆寫，就可以使用這個方法。
第二個原因就是效率。如果方法是final 的，那么編譯器就會把調用轉換成“內聯的(inline)”。當編譯器看到要調用final 方法的時候，它就會(根據判斷)舍棄普通的，“插入方法調用代碼的”編譯機制(將參數壓入棧，然后跳去執行要調用的方法的代碼，再跳回來清空棧，再處理返回值)，相反它會用方法本身的拷貝來代替方法的調用。當然如果方法很大，那么程序就會膨脹得很快，于是內聯也不會帶來什么性能的改善，因為這種改善相比程序處理所耗用的時間是微不足道的。Java 的設計者們暗示過，Java 的編譯器有這個功能，可以智能地判斷是不是應該將final 方法做成內聯的。不過，最好還是把效率問題留給編譯器和JVM去處理，而只把final 用于要明確地禁止覆寫的場合。
final 和private
private 方法都隱含有final 的意思。由于你不能訪問private 的方法，因此你也不能覆寫它。你可以給private 方法加一個final 修飾符，但是這樣做什么意義也沒有。這個問題有可能會造成混亂，因為即使你覆寫了一個private 方法(它隱含有final 的意思)，看上去它還是可以運行的，而且編譯器也不會報錯。
只有是基類接口里的東西才能被“覆寫”。也就是說，對象應該可以被上傳到基類，然后再調用同一個方法(這一點要到下一章才能講得更清楚。)如果方法是private 的，那它就不屬于基類的接口。它只能算是被類隱藏起來的，正好有著相同的名字的代碼。如果你在派生類里創建了同名的public 或protected，或package 權限的方法，那么它們同基類中可能同名的方法，沒有任何聯系。你并沒有覆寫那個方法，你只是創建了一個新的方法。由于private 方法是無法訪問的，實際上是看不見的，因此這么作除了會影響類的代碼結構，其它什么意義都沒有。
Final 類
把整個類都定義成final 的(把final 關鍵詞放到類的定義部分的前面)就等于在宣布，你不會去繼承這個類，你也不允許別人去繼承這個類。換言之，出于類的設計考慮，它再也不需要作修改了，或者從安全角度出發，你不希望它再生出子類。
注意，final 類的數據可以是final 的，也可以不是final 的，這要由你來決定。無論類是不是final 的，這一條都適用于“將final 用于數據的”場合。但是，由于final 類禁止了繼承，覆寫方法已經不可能了，因此所有的方法都隱含地變成final 了。你可以為final 類的方法加一個final 修飾符，但是這一樣沒什么意義。
小心使用final
看來，設計類的時候將方法定義成final 的，會是一個很明智的決定。可能你會覺得沒人會要覆寫你的方法。有時確實是這樣。