日韩国产欧美,亚洲国产精品高清久久久,亚洲欧美在线观看

pear — Sat, 11 Nov 2006 04:19:00 GMT

最�q�没什么事情好玩的�Q�所以就弄了个相册系�l?br />�Q�下载：share_supergirl@126.com 密码�Q�goodluck�Q�现在还在��l�开�?br />
架构是jstl+struts+spring+hibernate. 但经验不��I��设计�q�有很多问题�?br />
希望跟大家交��学习�?br />
希望哪位朋友�?“批斗”一�?我的�pȝ��?img src ="http://www.aygfsteel.com/pear/aggbug/80561.html" width = "1" height = "1" />

pear 2006-11-11 12:19 发表评论

MethodTable �l�于发布�?(if else �l�结者）

pear — Sat, 04 Nov 2006 10:03:00 GMT

自从�W�一天开始学�E�序设计�Q�老师��告诉我if else有多么的重要�Q�然后我每天看到的代码出现频率最高的也是if else 关键字�?br />
最�q�在写一个相册系�l�，准备�l�我老哥用的�Q�呵呵，架构是经典的 JSTL+Struts+Spring+Hibernate+Mysql

�׃��本�h不喜�Ƣ一个Action对应一个方法，所以就用了DispathAction,避免了过多的�c�（呵呵�Q�个��点）
我的�Ҏ��基本是一个Action包含所有的增删查改操作�Q�由于一个Action中的�Ҏ��l�常要调�?多个service 层的多个�Ҏ��Q�所以就会因为页面表单传来的控制参数�?if else个不停，实在烦�h。拿最��单的例子来说�Q?br />
分页查询中，一个最常用的控制参数就�?四个首页�Q�上一��，下一��，��N��. Action中的查询�Ҏ��p��好几个if else。看到就不是滋味。所以就在纳��P��人家Struts 都可以有DispathAction 我�ؓ什么不能实��C��个有�怼�功能的东西呢�Q��h家的配置昄��够简单，但是�q�是要配�|�。不是很爽�?br />
于是�Q�就用JAVA的反��来实现个MethodTable, 说白了就是根据一个字�W�串的值来调用相应的函敎ͼ�
��是把那些烦人的if else 变成一句调用。呵�Q�构思时��׃��滋滋了�?br />
下蝲地址里面有源代码�Q�测试案例，和注释，看不懂可以留�a��Q�跟大家交流学习�?br />

pear 2006-11-04 18:03 发表评论

pear — Mon, 02 Oct 2006 13:33:00 GMT

�|�页中打印表格数据备�?br />
上面的代码写�?lt;head>中··�?br />

然后在你不要打印的地方加一�? class="noprint"属性··�?/font>

pear 2006-10-02 21:33 发表评论

pear — Wed, 30 Aug 2006 14:10:00 GMT

----------------------------------------------------------------------------------------------------------

----------------------------------------------------------------------------------------------------------
//ajax
     var xmlHttp;
     function createXMLHttpRequest(){
      if(window.ActiveXObject){
         xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
      }else if(window.XMLHttpRequest){
         xmlHttp = new XMLHttpRequest();
      }
   }
   function startRequest(){
      createXMLHttpRequest();
   xmlHttp.onreadystatechange = callback;
      xmlHttp.open("POST","/LoadDpartmentServlet",true);
      xmlHttp.send();
   }
   function callback(){
      if(xmlHttp.readyState==4){
       if(xmlHttp.status ==200){
       alert("response.."+xmlHttp.responseText);
    }
   }
   }

----------------------------------------------------------------------------------------------------------
//树�Ş菜单初探

root

http://blogjava.net/pear">child>

http://blogjava.net/pear">child2>

root2: http://blogjava.net/pear">child3>; http://blogjava.net/pear">child4>

root2: child3; child4

----------------------------------------------------------------------------------------------------------

text

text2

text3

text4

textpk

text5

----------------------------------------------------------------------------------------------------------
//创徏一个节点的基本方式
           var newnode = document.createTextNode("meme");
           var element = document.createElement("option");
           element.appendChild(newnode);
           leftt.appendChild(element);
-------------------------------
           leftt.options[leftt.options.length]=new Option(value,text)
----------------------------------------------------------------------------------------------------------
//实现列表诓中的字�W�串�q�接

�Q�－�Q�－�Q�－�Q�－�Q�－�Q�－�Q�－�Q�－�Q�－�Q�－�Q�－�Q�－�Q�－�Q�－�Q�－�Q?br />

maomao

pear 2006-08-30 22:10 发表评论

java 深浅拯��问题�Q��{载）

pear — Tue, 29 Aug 2006 07:04:00 GMT

http://tomsui.blog.hexun.com/4308236_d.html
�Ҏ��Q�一�Q?引用拯��

Employee original = new Employee ("tomsui",4000);

Employee copy = original ;

original 与copy仅仅是同一对象的不同引用�?/p>

�Ҏ��Q�二�Q?��克�?/strong>

直接利用Object的clone()�Ҏ��Q?/p>
protected Objectclone()   throws CloneNotSupportedException

Employee copy = (Employee)original.clone();

注意两点�Q?/p>
1�Q?Object的clone() 是protected. 只能在包内或子类调用.

2�Q?如果��克隆的对象中存在对象�Ş式的成员变量:

public class Employee

{

        String name;

        int salary;

        Date birthday;

}

那么:

Employee copy = (Employee) original.clone();

只是拯��了original对象中的基本�c�d��和不变量.可变的对象成员变量拷贝得到的仍然是引�?

不变量应该包�?可以参见
a. String�c�d��?/p>
b. 被final定义,子对象在生存周期中仅保存一些常�?/p>

�Ҏ��(�? 深克�?/strong>

例子:

class Employee implements Cloneable

{

        private String name;

        private double salary;

        private Date birthday;

        // setter �?getter

        public Object clone()

        {

                try

                {

                        Employee cloned = (Employee ) super.clone();

                        cloned.birthday = (Date) birthday.clone();

                }catch(CloneNotSupportedException e) {

                return null;

                }

        }

}

说明�Q?/p>
1�Q�Employee 必须实现 Cloneable接口 �Q�标志接口）

     标志接口�Q�完全的�I�接口。这里的作用是告诉Ｊ�QӞ݋�Q�类的设计者理解了cloneable()�Ҏ��Q�可以通过isInstanceOf�q�行�q�行时检查�?/p>
2�Q�覆写的clone()�Ҏ��必须定义为public (原是protected)

3�Q�clone()�Ҏ��体必��d��try-catch {}中，捕获处理CloneNotSupportedException 。（防止�c�L��有实现Cloneable接口�Q�正��实��C��深克隆的话，�q�个异常肯定不会抛出�Q?/p>
ｐｓ.   JDK中，StringBuffer没有覆写clone()�Ҏ��Q�虽然它��实�l�承了Object的clone()�Q�但在实际应用中�Q�　因�ؓStringBuffer�l�不会有子类�Q�而且是在JDK外��用StringBuffer�Q�所以被protected界定的clone()�Ҏ��是完全不可见的！

�Ҏ��Q�四�Q��用序列化�q�行克隆

�q�种�Ҏ��涉及IO操作�Q�所以相�Ҏ��讲要比方法（三）慢．

import java.io.*;
import java.util.*;

public class SerialCloneTest
{
   public static void main(String[] args)
   {
      Employee harry = new Employee("Harry Hacker", 35000,
         1989, 10, 1);
      // clone harry
      Employee harry2 = (Employee)harry.clone();

      // mutate harry
      harry.raiseSalary(10);

      // now harry and the clone are different
      System.out.println(harry);
      System.out.println(harry2);
   }
}

/**
   A class whose clone method uses serialization.
*/
class SerialCloneable implements Cloneable, Serializable
{
   public Object clone()
   {
      try
      {
         // save the object to a byte array
         ByteArrayOutputStream bout = new
            ByteArrayOutputStream();
         ObjectOutputStream out
            = new ObjectOutputStream(bout);
         out.writeObject(this);
         out.close();

         // read a clone of the object from the byte array
         ByteArrayInputStream bin = new
            ByteArrayInputStream(bout.toByteArray());
         ObjectInputStream in = new ObjectInputStream(bin);
         Object ret = in.readObject();
         in.close();

         return ret;
      }
      catch (Exception e)
      {
         return null;
      }
   }
}

/**
   The familiar Employee class, redefined to extend the
   SerialCloneable class.
*/
class Employee extends SerialCloneable
{
   public Employee(String n, double s,
      int year, int month, int day)
   {
      name = n;
      salary = s;
      GregorianCalendar calendar
         = new GregorianCalendar(year, month - 1, day);
         // GregorianCalendar uses 0 for January
      hireDay = calendar.getTime();
   }

   public String getName()
   {
      return name;
   }

   public double getSalary()
   {
      return salary;
   }

   public Date getHireDay()
   {
      return hireDay;
   }

   public void raiseSalary(double byPercent)
   {
      double raise = salary * byPercent / 100;
      salary += raise;
   }

   public String toString()
   {
      return getClass().getName()
         + "[name=" + name
         + ",salary=" + salary
         + ",hireDay=" + hireDay
         + "]";
   }

   private String name;
   private double salary;
   private Date hireDay;
}

�Ҏ��Q�五�Q?其他�Ҏ��

可以通过java的反��机制定义一个类��g��对象序列化的万能克隆。改�q�后再脓上来�?/p>

pear 2006-08-29 15:04 发表评论

CHM文�g被关联，不能打开的解军_��? (�q�有: 备䆾一下DES��法)

pear — Sat, 01 Jul 2006 13:37:00 GMT
�q�行�Q�regsvr32 c:\windows\system32\hhctrl.ocx

package des;

import java.io. * ;
import java.nio. * ;
import java.nio.channels.FileChannel;

public class FileDES{
private static final boolean enc = true ; // 加密
private static final boolean dec = false ; // 解密

private String srcFileName;
private String destFileName;
private String inKey;
private boolean actionType;
private File srcFile;
private File destFile;
private Des des;

private void analyzePath(){
String dirName;
int pos = srcFileName.lastIndexOf( " / " );
dirName = srcFileName.substring( 0 ,pos);
File dir = new File(dirName);
if ( ! dir.exists()){
System.err.println(dirName + " is not exist " );
System.exit( 1 );
} else if ( ! dir.isDirectory()){
System.err.println(dirName + " is not a directory " );
System.exit( 1 );
}

pos = destFileName.lastIndexOf( " / " );
dirName = destFileName.substring( 0 ,pos);
dir = new File(dirName);
if ( ! dir.exists()){
if ( ! dir.mkdirs()){
System.out.println ( " can not creat directory: " + dirName);
System.exit( 1 );
}
} else if ( ! dir.isDirectory()){
System.err.println(dirName + " is not a directory " );
System.exit( 1 );
}
}

private static int replenish(FileChannel channel,ByteBuffer buf) throws IOException{
long byteLeft = channel.size() - channel.position();
if (byteLeft == 0L )
return - 1 ;
buf.position( 0 );
buf.limit(buf.position() + (byteLeft < 8 ? ( int )byteLeft : 8 ));
return channel.read(buf);
}

private void file_operate( boolean flag){
des = new Des(inKey);
FileOutputStream outputFile = null ;
try {
outputFile = new FileOutputStream(srcFile, true );
} catch (java.io.FileNotFoundException e) {
e.printStackTrace(System.err);
}
FileChannel outChannel = outputFile.getChannel();

try {
if (outChannel.size() % 2 != 0 ){
ByteBuffer bufTemp = ByteBuffer.allocate( 1 );
bufTemp.put(( byte ) 32 );
bufTemp.flip();
outChannel.position(outChannel.size());
outChannel.write(bufTemp);
bufTemp.clear();
}
} catch (Exception ex){
ex.printStackTrace(System.err);
System.exit( 1 );
}
FileInputStream inFile = null ;
try {
inFile = new FileInputStream(srcFile);
} catch (java.io.FileNotFoundException e){
e.printStackTrace(System.err);
// System.exit(1);
}
outputFile = null ;
try {
outputFile = new FileOutputStream(destFile, true );
} catch (java.io.FileNotFoundException e) {
e.printStackTrace(System.err);
}

FileChannel inChannel = inFile.getChannel();
outChannel = outputFile.getChannel();

ByteBuffer inBuf = ByteBuffer.allocate( 8 );
ByteBuffer outBuf = ByteBuffer.allocate( 8 );

try {
String srcStr;
String destStr;
while ( true ){

if (replenish(inChannel,inBuf) ==- 1 ) break ;
srcStr = ((ByteBuffer)(inBuf.flip())).asCharBuffer().toString();
inBuf.clear();
if (flag)
destStr = des.enc(srcStr,srcStr.length());
else
destStr = des.dec(srcStr,srcStr.length());
outBuf.clear();
if (destStr.length() == 4 ){
for ( int i = 0 ; i < 4 ; i ++ ) {
outBuf.putChar(destStr.charAt(i));
}
outBuf.flip();
} else {
outBuf.position( 0 );
outBuf.limit( 2 * destStr.length());
for ( int i = 0 ; i < destStr.length(); i ++ ) {
outBuf.putChar(destStr.charAt(i));
}
outBuf.flip();
}

try {
outChannel.write(outBuf);
outBuf.clear();
} catch (java.io.IOException ex) {
ex.printStackTrace(System.err);
}
}
System.out.println (inChannel.size());
System.out.println (outChannel.size());
System.out.println ( " EoF reached. " );
inFile.close();
outputFile.close();
} catch (java.io.IOException e){
e.printStackTrace(System.err);
System.exit( 1 );
}
}

public FileDES(String srcFileName,String destFileName,String inKey, boolean actionType){
this .srcFileName = srcFileName;
this .destFileName = destFileName;
this .actionType = actionType;
analyzePath();
srcFile = new File(srcFileName);
destFile = new File(destFileName);
this .inKey = inKey;
if (actionType == enc)
file_operate(enc);
else
file_operate(dec);
}

public static void main(String[] args){
String file1 = System.getProperty( " user.dir " ) + " /111.doc " ;
String file2 = System.getProperty( " user.dir " ) + " /222.doc " ;
String file3 = System.getProperty( " user.dir " ) + " /333.doc " ;
String passWord = " 1234ABCD " ;
FileDES fileDes = new FileDES(file1,file2,passWord, true );
FileDES fileDes1 = new FileDES(file2,file3,passWord, false );
}

pear 2006-07-01 21:37 发表评论

pear — Mon, 19 Jun 2006 00:13:00 GMT

Hibernate Synchronizer
下蝲地址:
http://sourceforge.net/project/showfiles.php?group_id=99370

备䆾一下主键id映射:
int          native           int primary key identity(1,1)
String    uuid.hex       varchar(n)/char(n) primary key
int          assigned       int primary key

//分页
Criteria criteria = session.createCriteria(Article.class);
criteria.setFirstResult(first);
criteria.setFetchSize(recordsNum);
//criteria.setMaxResults(recordsNum);
//分组和统�?br />criteria.setProjection(Projections.groupProperty("age"));
//多条件的分组�l�计
ProjectionList pList = Projections.projectionList();
pList.add(Projections.groupProperty("age"));
pList.add(Projections.rowCount());
criteria.setProjection(pList);
//排序
criteria.addOrder(Order.desc("id"));
criteria.addOrder(Order.asc("id"));

    Article article = new Article();
     //     article.setId(3);
        article.setTitle( " mytitle " );
        article.setContent( " mycontent " );
        Configuration c = new Configuration();
        c.configure();
        SessionFactory sf = c.buildSessionFactory();
        Session s = sf.openSession();
        s.beginTransaction();
        s.save(article);
        s.flush();
         try {
            s.connection().commit();
        } catch (Exception e) {
            System.out.println( " Exceptionee.. " );
        }
        s.close();

Resource ac = new ClassPathResource( " /applicationContext.xml " );
        XmlBeanFactory xbf = new XmlBeanFactory(ac);
        IManagerArticleDao dao = (IManagerArticleDao)xbf.getBean( " DAO " );

pear 2006-06-19 08:13 发表评论

自己写了个ejb3的小例子代码 ( �?�?)

pear — Sun, 18 Jun 2006 10:09:00 GMT

今天,你消息驱动了�?
ejb3中的消息驱动Bean的例子�?a >GO -->
下面是源代码下蝲地址

pear 2006-06-18 18:09 发表评论

用JavaScript实现��单的表单验证. --作者：我心依旧

pear — Fri, 16 Jun 2006 12:42:00 GMT

因�ؓ�?2月开始公�怸�直在忙一个项�?所以N个月没来自己的Blog写点东西了呵�?今天来发几个��单的验证�?希望能帮助一些正在开发web的朋友节省点旉��HOHO.�{�公司的��目忙完,我还会在我的Blog上写��Z��些关于Hibernate的心得和�l�验,希望能帮助一些正在学习Web框架的朋�?

// �q��o非法字符
function checkStr(s)
{
var str0 = " <>'~!@#$%^&*()+=[]\\\ " ; ?/ :{} | .,` 　“”‘’_ " ;
for (var i = 0 ;i < str0.length;i ++ )
{
   if (s.indexOf(str0.substring(i,i + 1 )) !=- 1 )
  { alert( " 输入字符串中包含非法字符(如：<,>,%�{?! " );
    return false ;
  }
}
return true ;
}
// 数字
function isNumber(s)
{
   for ( var loc = 0 ; loc < s.length; loc ++ )
    if ( (s.charAt(loc) < ' 0 ' ) || (s.charAt(loc) > ' 9 ' ) ){
    alert( " 误��入有效数�? " );
     return false ;
   }
   return true ;
}
// 英文+数字
function isCharNumber(s)
{
   for ( var loc = 0 ; loc < s.length; loc ++ )
    if ( (s.charAt(loc) < ' 0 ' ) || (s.charAt(loc) > ' 9 ' ) )
    if ( (s.charAt(loc) < ' a ' ) || (s.charAt(loc) > ' z ' ) )
    if ( (s.charAt(loc) < ' A ' ) || (s.charAt(loc) > ' Z ' ) )
    {
    alert( " 只允许英文或数字�Q?/span> " );
     return false ;
    }
   return true ;
}
// 不可为空
function isNull(s)
{
   if (s.length == 0 || s == "" ){
   alert( " 请不要输入空��|�� " );
    return false ;
  }
   return true ;
}
// 效验长度
function isLength(s,i)
{
if (s.length > i){
  alert( " 长度��出了范�? " );
   return false ;
}
return true ;
}
// 电子邮�g
function isEmail(s)
{
if (s.length > 50 ){
  alert( " Email地址长度不能��过50�? " )
  document.joinus.email.focus()
   return false ;
}
var regu = " ^(([0-9a-zA-Z]+)|([0-9a-zA-Z]+[_.0-9a-zA-Z-]*[0-9a-zA-Z]+))@([a-zA-Z0-9-]+[.])+([a-zA-Z]{2}|net|com|gov|mil|org|cc|edu|biz|int|tv)$ "
var re = new RegExp(regu);
if (s.search(re) != - 1 ) {
   return true ;
}
else {
  alert ( " 误��入有效合法的E-mail地址�Q?/span> " )
  document.joinus.email.focus()
   return false ;
}
}

pear 2006-06-16 20:42 发表评论

javamail深入��出 --作者：我心依旧

pear — Fri, 16 Jun 2006 12:37:00 GMT
     摘要: 我干软�g开发也有一点的�q�头�?回头��x��,也经历了不少的酸甜苦�?��决了复杂的问题快乐过.也�ؓ不分昼夜的加班赶工程郁闷�q?不过�q�些都没能减��我对计��机的热�?我对�E�序的喜�?以前对JavaMail也有一些学习性的认识,不过一直没在实际的��目中应用过.直到最�q�的一个项�?需要JavaMail所以我打算认真的学习一下这�U�技�?因�ؓ我目前擅长的是Struts,而Struts又不具备邮�g发送的功能,所以我...  阅读全文

pear 2006-06-16 20:37 发表评论

JavaMail中文附�g处理(转蝲)

pear — Fri, 16 Jun 2006 12:12:00 GMT
     摘要: //SendMail.java import javax.mail. * ; import javax.mail.internet. * ...  阅读全文

pear 2006-06-16 20:12 发表评论

日韩国产欧美,亚洲国产精品高清久久久,亚洲欧美在线观看

MethodTable �l�于发布�?(if else �l�结者）

java 深浅拯���问题�Q��{载）

CHM文�g被关联，不能打开的解军_���? (�q�有: 备䆾一下DES���法)

自己写了个ejb3的小例子代码 ( �?�?)

用JavaScript实现���单的表单验证. --作者：我心依旧

javamail深入���出 --作者：我心依旧

JavaMail中文附�g处理(转蝲)

java 深浅拯��问题�Q��{载）

CHM文�g被关联，不能打开的解军_��? (�q�有: 备䆾一下DES��法)

用JavaScript实现��单的表单验证. --作者：我心依旧

javamail深入��出 --作者：我心依旧