成人午夜激情影院,国产精品一区二区无线,国产综合亚洲精品一区二

Thu, 19 Jun 2008 03:53:00 GMT

本文转移�?a title="http://php.11519.net/5jblog/?p=399" >http://php.11519.net/5jblog/?p=399

有猫�怼�的日�?/a> 2008-06-19 11:53 发表评论

Thu, 19 Jun 2008 03:45:00 GMT

有猫�怼�的日�?/a> 2008-06-19 11:45 发表评论

Thu, 19 Jun 2008 03:33:00 GMT

摘要: 把最�q�工作中所写的代码贴一�?以备后用,如能�l�予你帮助我万分高兴 package com.easylotto.omas.util; import java.util.*; import java.io.*; import org.apache.commons.lang.*; /** * 替换HTMl里面的字�W?n... 阅读全文

有猫�怼�的日�?/a> 2008-06-19 11:33 发表评论

JAVA和JAVAC 命��o(h��)�?

Thu, 12 Jun 2008 08:00:00 GMT

JAVA和JAVAC 命��o(h��)�?/a>

javac和java命��o(h��)行中�?classpath选项
�q�是个很基础的问题，但是因�ؓ(f��)基本上都是用现有的IDE工具来开发java�E�序�Q�所以很��有人意识到�q�一炏V�?br /> javac
-classpath�Q�设定要搜烦(ch��)�cȝ��路径�Q�可以是目录�Q�jar文�g�Q�zip文�g�Q�里面都是class文�g�Q�，�?x��)覆盖掉所有在CLASSPATH里面的设定�?br /> -sourcepath�Q?讑֮�要搜索编译所需java 文�g的�\径，可以是目录，jar文�g�Q�zip文�g�Q�里面都是java文�g�Q��?br /> 所以一个完整的javac命��o(h��)行应该是�q�样的，
假设abc.java在�\径c:\src里面�Q�在��M��的目录的都可以执行以下命令来�~�译�?br /> javac -classpath c:\classes;c:\jar\abc.jar;c:\zip\abc.zip -sourcepath c:\source\project1\src;c:\source\project2 \lib\src.jar;c:\source\project3\lib\src.zip c:\src\abc.java

表示�~�译需要c:\classed下面的class文�g�Q�c:\jar\abc.jar里面的class文�g�Q�c:\zip\abc.zip里面的class文�g
�q�需要c:\source\project1\src下面的源文�g�Q�c:\source\project2 \lib\src.jar里面的源文�g�Q�c:\source\project3\lib\src.zip里面的源文�g�Q?br style="color: rgb(255,0,0)" /> 注意�Q�jar�Q�zip里面的源文�g不会(x��)有什么改动，目录下的源文�Ӟ��有可能会(x��)被重新编译�?br /> java
-classpath�Q?讑֮�要搜索的�cȝ��路径�Q�可以是目录�Q�jar文�g�Q�zip文�g�Q�里面都是class文�g�Q�，�?x��)覆盖掉所有的CLASSPATH的设定�?br /> �׃��所要执行的�c�M��是要搜烦(ch��)的类的一部分�Q�所以一定要把这个类的�\径也攑ֈ�-classpath的设�|�里面�?br /> 表现在，在要执行的类的�\径里面执行java�Ӟ��一定要��d��上点��P��.�Q�标�C�本目录也要搜烦(ch��)�?br />
假设abc.class在�\径c:\src里面
可以在�Q何�\径下执行以下命��o(h��)
java -classpath c:\classes;c:\jar\abc.jar;c:\zip\abc.zip;c:\src abc

问题�Q�如果main.class属于c:\jar\abc.jar�Q��ƈ且在com.cnblogs.jeffchen�q�个包里�Q�那么执行java -classpath c:\classes;c:\jar\abc.jar;c:\zip\abc.zip;com.cnblogs.jeffchen.main卛_��Q?但是如果classpath中包含多个jar包呢�Q��ƈ且其他jar包中也有com.cnblogs.jeffchen�?x��)发生什么情况？错误�Q?br />
在windows下，
文�g路径的分割符为反斜杠 \
�c�L��者java文�g列表的分割符为分�?;

在linux�?br /> 文�g路径的分隔符位斜�?/
�c�L��者java文�g列表的分隔符为冒�?:

一个linux下编译和�q�行的例�?br /> /usr/local/java/bin/javac -classpath /tmp/javatest/lib/mail-1.3.3.jar -d /tmp/javatest/bin/ /tmp/javatest/src/jp/co/realseed/Capability.java

/usr/local/java/bin/java -classpath /tmp/javatest/lib/mail-1.3.3.jar:/tmp/javatest/bin/ jp.co.realseed.Capability

有猫�怼�的日�?/a> 2008-06-12 16:00 发表评论

Tue, 15 Apr 2008 03:44:00 GMT

前段旉��需要用到这斚w��的技�?写了(ji��n)几个例子,不加文字说明,只脓(chu��ng)代码

package demo.encrypt;

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/**
*
* 摘要加密。检验信息完整�?nbsp;目前�q�泛使用的算法有MD4、MD5、SHA-1
* @author peidw 2008-03-02
*
*/
public class MessageDigestExample {
/**
* 信息摘要完整性加�?br /> *
*/

    /**
     * 单一摘要��法�Q�不使用密码
     * @param args
     * @throws UnsupportedEncodingException
     * @throws NoSuchAlgorithmException
     */
    public static void main(String[] args) throws UnsupportedEncodingException, NoSuchAlgorithmException {
        String str="www.17lotto.com";  //要加密的字符�?/span>
        byte[] bstr=str.getBytes("utf-8");
        MessageDigest messageDigest=MessageDigest.getInstance("SHA-1"); //获取��法
        System.out.println("\n"+messageDigest.getProvider().getInfo());
        System.out.println("加密�?\n "+new String(bstr));

        messageDigest.update(bstr);
        System.out.println("\n加密后结�?");
        System.out.println(new String(messageDigest.digest(),"utf-8"));

    }

}

package demo.encrypt;

import java.io.*;
import java.security.Key;
import java.security.NoSuchAlgorithmException;

import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;

/**
* �U�钥加密�Q�也�U�对�U�性密码，�?解密双方�׃�n同一密钥
*
* @author peidw
*
*/

public class PrivateExample {
    /**
     * 加必解密例子
     * @throws Exception
     */
    public void deendemo()throws Exception{
        String str="www.17lotto.com";  //要加密的字符�?/span>
        byte[] bstr=str.getBytes("utf-8");
        //产生密钥
        KeyGenerator keyGen=KeyGenerator.getInstance("AES");
        keyGen.init(128);

        Key key=keyGen.generateKey();
        //密钥保存
        File fkey=new File("f:\\key.obj");
        OutputStream os=new FileOutputStream(fkey);
        os.write(key.getEncoded());
        os.flush();
        os.close();
        //密钥保存问题

        //获得一个私鈅加密类Cipher�Q�ECB是加密方式，PKCS5Padding是填充方�?/span>
        Cipher cipher=Cipher.getInstance("AES/ECB/PKCS5Padding");
        System.out.println("\n"+cipher.getProvider().getInfo());

        //使用�U�鈅加密
        cipher.init(Cipher.ENCRYPT_MODE,key);
        byte[] cipherText=cipher.doFinal(bstr);
        //密文保存
        File cryptograph=new File("f:\\cryptograph.obj");
        OutputStream cos=new FileOutputStream(cryptograph);
        cos.write(cipherText);
        cos.flush();
        cos.close();

        System.out.println("Finish encryption:");
        System.out.println(new String(cipherText,"utf-8"));

        System.out.println("\nStart decryption:");
        cipher.init(Cipher.DECRYPT_MODE,key);
        byte[] newPlainText=cipher.doFinal(cipherText);
        System.out.println("Finish decryption:");

        System.out.println(new String(newPlainText,"utf-8"));

    }

    /**
     * 从文件加载密钥和密文�q�行解密例子(新jdk不懂怎么加蝲)
     * @throws Exception
     */
    public void decryptionFromFile()throws Exception{
        KeyGenerator keyGen=KeyGenerator.getInstance("AES");

    }

    /**
     * @param args
     * @throws Exception
     */
    public static void main(String[] args) throws Exception {
        PrivateExample pe=new PrivateExample();
        pe.deendemo();
    }

}

package demo.encrypt;

import java.io.*;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;

import javax.crypto.Cipher;

/**
*  非对�U�性加密，也叫公钥加密产开两个密钥�Q�私钥，公钥�Q�私钥加密只有公钥才能解��P��同时公钥加密只有�U�钥能解开.
*  目前JDK5提供的RSA��法
* @author peidw
*
*/
public class PublicExample {
    /**
     * 加密解密例子
     * @throws Exception
     */
    public void deenDemo()throws Exception{
        String str="www.17lotto.com";
        byte bstr[]=str.getBytes("utf-8");
        //构成一个RSA密钥
        System.out.println("\nStart generating RSA key");
        KeyPairGenerator keyGen=KeyPairGenerator.getInstance("RSA");
        keyGen.initialize(1024);
        KeyPair key=keyGen.generateKeyPair();
        //保存�?�U�密�?/span>
        File pubfile=new File("f:\\public.dat");
        File prifile=new File("f:\\private.dat");
        OutputStream pubos=new FileOutputStream(pubfile);
        OutputStream prios=new FileOutputStream(prifile);
        pubos.write(key.getPublic().getEncoded());
        prios.write(key.getPrivate().getEncoded());
        pubos.flush();
        prios.flush();
        pubos.close();
        prios.close();

        System.out.println("Finish generating RSA key");
        //获得一个RSA的Cipher�c�，使用公鈅加密
        Cipher cipher=Cipher.getInstance("RSA/ECB/PKCS1Padding");
        System.out.println("\n"+cipher.getProvider().getInfo());

        System.out.println("\nStart encryption");
        cipher.init(Cipher.ENCRYPT_MODE,key.getPublic());
        byte[] cipherText=cipher.doFinal(bstr);

        File pub_cryptograph=new File("f:\\pub_cryptograph.dat");
        OutputStream os=new FileOutputStream(pub_cryptograph);
        os.write(cipherText);
        os.flush();
        os.close();

        System.out.println("Finish encryption:");
        System.out.println(new String(cipherText,"UTF8"));
        //使用�U�鈅解密
        System.out.println("\nStart decryption");
        cipher.init(Cipher.DECRYPT_MODE,key.getPrivate());
        byte[] newPlainText=cipher.doFinal(cipherText);
        System.out.println("Finish decryption:");
        System.out.println(new String(newPlainText,"UTF8"));

    }
    /**
     * 加裁�U�钥�Q�解密公钥加密的文的文�g
     * @throws Exception
     */
    public void fromfielEnDeDemo()throws Exception{
        File prifile=new File("f:\\private.dat");
        FileInputStream fsprivateKey = new FileInputStream(prifile);
        BufferedInputStream bfsprivateKey = new BufferedInputStream(fsprivateKey);
        byte[] byteprivateKey = new byte[bfsprivateKey.available()];
        bfsprivateKey.read(byteprivateKey);
        bfsprivateKey.close();
        //X509EncodedKeySpec priKeySpec = new X509EncodedKeySpec(byteprivateKey);  公钥加蝲�?/span>
        PKCS8EncodedKeySpec priKeySpec = new PKCS8EncodedKeySpec(byteprivateKey);  //�U�钥加蝲

        KeyFactory keyFactory = KeyFactory.getInstance("RSA");
        PrivateKey priKey = keyFactory.generatePrivate(priKeySpec);
        System.out.println(priKey.getFormat());

        Cipher cipher=Cipher.getInstance("RSA/ECB/PKCS1Padding");
        cipher.init(Cipher.DECRYPT_MODE,priKey);

        File pubcryptographfile=new File("f:\\pub_cryptograph.dat");
        FileInputStream pubcis = new FileInputStream(pubcryptographfile);
        byte cstr[]=new byte[pubcis.available()];
        pubcis.read(cstr);
        pubcis.close();

        byte[] newPlainText=cipher.doFinal(cstr);
        System.out.println("Finish decryption:");
        System.out.println(new String(newPlainText,"UTF8"));
    }


    /**
     * @param args
     */
    public static void main(String[] args) throws Exception{
        // TODO Auto-generated method stub
        PublicExample pe=new PublicExample();
        pe.fromfielEnDeDemo();
    }

}

package demo.encrypt;

import java.security.*;

/**
*

数字�{�֐�



 *   使用RSA�U�钥对信息摘要签名，然后用公钥进行解�?br />
 *

* @author peidw
*
*/
public class DigitalSignature2Example {

    public void test () throws Exception {
        String str="www.17lotto.com";
        byte[] bstr=str.getBytes("utf-8");
        //形成RSA公私钥对
        System.out.println("\nStart generating RSA key");
        KeyPairGenerator keyGen=KeyPairGenerator.getInstance("RSA");
        keyGen.initialize(1024);
        KeyPair key=keyGen.generateKeyPair();

        Signature sig=Signature.getInstance("SHA1WithRSA");
        sig.initSign(key.getPrivate());
        sig.update(bstr);
        byte[] signature=sig.sign();
        System.out.println(sig.getProvider().getInfo());
        System.out.println("\nSignature:");
        System.out.println(new String(signature,"utf-8"));

        //使用公鈅验证
        System.out.println("\nStart signature verification");
        sig.initVerify(key.getPublic());
        sig.update(bstr);
        try{
            if(sig.verify(signature)){
              System.out.println("Signature verified");
            }else System.out.println("Signature failed");
        }catch(SignatureException e){
            System.out.println("Signature failed");
        }


    }

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub

    }

}

有猫�怼�的日�?/a> 2008-04-15 11:44 发表评论

Mon, 18 Feb 2008 08:18:00 GMT

例子代码如相,原理我还没弄明白

package example;

import java.io.UnsupportedEncodingException;
/**
* Unicode 码�{成汉�?br /> * @author peidw
*
*/

public class CodeFormTest {
    public static void main(String args[]) throws UnsupportedEncodingException{
        String a="开始兑奖";
        String str = a.replaceAll("&#",",").replaceAll(";","");
        String [] s2 = str.split(",");
        String s1 ="";
        System.out.println(s2.length);
        for (int i=1;i<s2.length;i++){
            int v = Integer.parseInt(s2[i],10);
            s1=s1+(char)v;
        }
        System.out.println(s1);
    }
}

有猫�怼�的日�?/a> 2008-02-18 16:18 发表评论

java api提供的正则表辑ּ�

Mon, 21 Jan 2008 05:57:00 GMT

无聊一直想看明白正则表辑ּ�,但这门课�E�要深入需要太常时间了(ji��n),��q��?ji��n)java api中所提供的正则表辑ּ�,做了(ji��n)个小例子,也算一个入门吧.
在java中正则运��主要由三部分构�?

1、模式Parttern

2、知配器Matcher

3、输入字�W�串

参考如下例子和别的blog

package example;
import java.util.regex.*;

public class RegexDemo {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        String str="ccdewps kkikk";
        String regEx="a|f";
        Pattern  p=Pattern.compile(regEx,Pattern.CASE_INSENSITIVE);
        Matcher m=p.matcher(str);
        boolean result=m.find();
        System.out.println(result);
        //替换
        str="ababccded,ab ,love ";
        regEx="a+";
        p=Pattern.compile(regEx);
        m=p.matcher(str);
        String s=m.replaceAll("--"); //""表示删除
        System.out.println(s);
        regEx="(love)";
        p=Pattern.compile(regEx);
        m=p.matcher(str);
        String s1=m.replaceAll("&"); //""表示删除
        System.out.println(s1);
        System.out.println(m.find());
        p=Pattern.compile("c.e");
        m=p.matcher(str);
        System.out.println(m.find());
        System.out.println(m.replaceFirst("呵呵,正则表达�?/span>"));
    }

}

�q�篇介绍java 正则的blog写得不错�Q�细�?j��)看一遍就能弄懂个大概
http://blog.csdn.net/ambitiontan/archive/2005/12/21/558195.aspx

最后切记正则的目的�Q�对字符串正行，查找匚w��、替换、删除等工作�?/p>

有猫�怼�的日�?/a> 2008-01-21 13:57 发表评论

java��d��资源文�g

Thu, 11 Oct 2007 15:54:00 GMT

如何��d��资源文�g�Q?br /> �Q�一�Q?br /> Properties props = new Properties();
props.load(new FileInputStream("db.properties"));

�Q�二�Q?br /> blog.properties文�g如下

dbdriver=oracle.jdbc.driver.OracleDriver
dburl=jdbc:oracle:thin:@127.0.0.1:1521:ora92
dbuser=blog
dbpwd=blog

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

public class Config {

public Config() {
this.initDBConfig();
}

public String DBdriver;
public String DBuser;
public String DBpwd;
public String DBurl;

private void initDBConfig() {
    try {
      ResourceBundle bundle = ResourceBundle.getBundle("blog");
      DBdriver = bundle.getString("dbdriver");
      DBurl = bundle.getString("dburl");
      DBuser = bundle.getString("dbuser");
      DBpwd = bundle.getString("dbpwd");
    }
    catch (Exception ex) {
      ex.printStackTrace();
    }

}

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

public class DAO {
public DAO() {
}

public Connection getConnection() {
    Connection conn = null;
    Config config = new Config();
    String DBdriver = config.DBdriver;
    String DBuser = config.DBuser;
    String DBpwd = config.DBpwd;
    String DBurl = config.DBurl;
    try {
      Class.forName(DBdriver);
      conn = DriverManager.getConnection(DBurl, DBuser, DBpwd);
    }
    catch (Exception ex) {
      System.out.println("********************");
      System.out.println("不能得到数据库连�?);
      System.out.println("DBdriver: " + DBdriver);
      System.out.println("DBuser: " + DBuser);
      System.out.println("DBpwd: " + DBpwd);
      System.out.println("DBurl: " + DBurl);
      ex.printStackTrace();
    }
    return conn;
}

}

�Q�三�Q?br /> Properties props=new Properties();
props.load(BugFactory.class.getResourceAsStream("xx.properties"));
String name = props.getPropery("xxxx");
此时xx.properties应该与该�c�L��在同一个目�?

�Q�四�Q?br /> ResourceBundle res = ResourceBundle.getBundle("yy.properties");
String name = res.getString("yyyy");
yy.properties应放�?WEB-INF/classes目录

�Q�五�Q?br /> 如果你这个Bean打包的话�Q�就把这个文件放在包内�?/div>

我一般是�q�样写的
Properties prop = new Properties();
try
{
InputStream is = getClass().getResourceAsStream("db.properties");
prop.load(is);
if(is!=null)
is.close();
}

另：(x��)
props.load(new FileInputStream("db.properties")); 是读取当前目录的db.properties文�g
getClass.getResourceAsStream("db.properties"); 是读取当前类所在位�|�一��L(f��ng)��db.properties文�g
getClass.getResourceAsStream("/db.properties"); 是读取ClassPath的根的db.properties文�g,注意ClassPath如果是多个�\径或者jar文�g�?只要在�Q意一个�\径目录下或者jar文�g里的根下都可�?如果存在于多个�\径下的话,按照ClassPath中的先后��序,使用先找到的,其余忽略.

有猫�怼�的日�?/a> 2007-10-11 23:54 发表评论

javax.mail使用例子

Mon, 08 Oct 2007 14:40:00 GMT

摘要: package pg.system; /** * @author pdw * * TODO 发送邮�? * */ import java.util.*; import javax.mail.*; import javax.ma... 阅读全文

有猫�怼�的日�?/a> 2007-10-08 22:40 发表评论

jdk5多线�E?�?

Wed, 05 Sep 2007 02:51:00 GMT

该文转移�?nbsp; http://php.11519.net/5jblog/?p=401

有猫�怼�的日�?/a> 2007-09-05 10:51 发表评论

Wed, 29 Aug 2007 12:47:00 GMT

package util;

import java.lang.reflect.Field;
import java.lang.reflect.Method;

import test.web.example.PP;
/**
*
* @author peidw
*
*/

public class Reflection {

    /**
     * 取得参数对象中的公共属�?br>     * @param obj
     * @param fieldname
     * @return
     * @throws Exception
     */
    public Object getProperty(Object obj,String fieldname)throws Exception{
        Object result=null;
        Class objClass=obj.getClass();
        Field field=objClass.getField(fieldname);
        result=field.get(obj);
        return result;
    }
    /**
     * 获得某类的静(r��n)态属�?br>     * @param className
     * @param fieldName
     * @return
     * @throws Exception
     */
    public Object getStaticProperty(String className,String fieldName)throws Exception{
        Class cls=Class.forName(className);
        Field field=cls.getField(fieldName);
        Object provalue=field.get(cls);
        return provalue;
    }
    /**
     * 获取参数对象的属性�?br>     * @param obj
     * @param propertyName
     * @return
     * @throws Exception
     */
    public Object getPrivatePropertyValue(Object obj,String propertyName)throws Exception{
        Class cls=obj.getClass();
        Field field=cls.getDeclaredField(propertyName);
        field.setAccessible(true);
        Object retvalue=field.get(obj);
        return retvalue;
    }

    /**
     * 执行某对象的�Ҏ(gu��)��
     * @param owner
     * @param methodName
     * @param args
     * @return
     * @throws Exception
     */
    public Object invokeMethod(Object owner,String methodName,Object[] args)throws Exception{
        Class cls=owner.getClass();
        Class[] argclass=new Class[args.length];
        for(int i=0,j=argclass.length;i<j;i++){
            argclass[i]=args[i].getClass();
        }
        Method method=cls.getMethod(methodName,argclass);
        return method.invoke(owner, args);
    }

    /**
     * 执行�?r��n)态类的方�?br>     * @param className
     * @param methodName
     * @param args
     * @return
     * @throws Exception
     */
    public Object invokeStaticMethod(String className,String methodName,Object[] args)throws Exception{
        Class cls=Class.forName(className);
        Class[] argclass=new Class[args.length];
        for(int i=0,j=argclass.length;i<j;i++){
            argclass[i]=args[i].getClass();
        }
        Method method=cls.getMethod(methodName,argclass);
        return method.invoke(null, args);
    }
    public Object newInstance(String className,Object[] args)throws Exception{
        Class clss=Class.forName(className);

        Class[] argclass=new Class[args.length];
        for(int i=0,j=argclass.length;i<j;i++){
            argclass[i]=args[i].getClass();
        }
        java.lang.reflect.Constructor cons=clss.getConstructor(argclass);
        return cons.newInstance();
    }
    public static void main(String[] args)throws Exception{
        Reflection rl=new Reflection();
        PP p=new PP();
        rl.getPrivatePropertyValue(p,"aname");
    }
}

��试�c?br>

package test.web.example;

import static org.junit.Assert.*;

import org.junit.Before;
import org.junit.Test;
import org.junit.Assert.*;
import util.Reflection;

/**
*
* @author peidw
*
*/
public class ReflectionTest {

    private PP pp=null;
    private Reflection reflection=null;
    @Before
    public void setUp() throws Exception {
        reflection=new Reflection();
        pp=new PP();

    }

    @Test
    public void testGetProperty() throws Exception{
        System.out.println(pp);
        System.out.println(reflection);
        System.out.println(reflection.getProperty(pp, "address"));
        //assertEquals(reflection.getProperty(pp, "address"), null);

    }

    @Test
    public void testGetStaticProperty()throws Exception{
        assertEquals(reflection.getStaticProperty("test.web.example.PP", "count"),"love you");
    }

    @Test
    public void testGetPrivatePropertyValue() throws Exception{
        assertEquals(reflection.getPrivatePropertyValue(pp, "aname"),null);
    }

    @Test
    public void testInvokeMethod() throws Exception{
        assertEquals(reflection.invokeMethod(pp, "setAddress", new Object[]{"合��西场�?/span>"}),null);
        assertEquals(reflection.getProperty(pp, "address"), "合��西场�?/span>");
    }

    @Test
    public void testInvokeStaticMethod()throws Exception {
        assertEquals(reflection.invokeStaticMethod("test.web.example.PP", "changeCount",new Object[]{"80"}),true);
        assertEquals(reflection.getStaticProperty("test.web.example.PP", "count"),"80");
    }

    @Test
    public void testNewInstance() throws Exception{

        Object vpp=reflection.newInstance("test.web.example.PP",new Object[]{"peidw","�q�州"});
        org.junit.Assert.assertNotNull(vpp);
        //assertEquals(reflection.getPrivatePropertyValue(vpp,"aname"),"peidw");
    }

}

有猫�怼�的日�?/a> 2007-08-29 20:47 发表评论

itext�l�验�ȝ��( �?

Wed, 28 Feb 2007 08:02:00 GMT

因�ؓ(f��)前些日子在一个项目中用到�?ji��n)iText�Q�稍有收��P��便�ȝ��于此�Q�以供他人所需�?br />
iText是一个比较底层的pdf库，很多��目的pdf操作都是以它为基��的。像spring�Q�以�?qi��ng)另一个比较有名的报表工具jasperreports。简单的pdf报表输出用它比较合适，比较复杂的话使用��h��比较困难了(ji��n)�Q�你要手工编写太多的代码�?br />
比较好的是iText�|�站上提供相当多的示例代码，比较�Ҏ(gu��)��入门。我�q�里只说一些在它的文��里�ƈ没有直接讲到的东�ѝ�?br />
1 关于Document

Document的几�U�构造函敎ͼ�(x��)
public Document();
public Document(Rectangle pageSize);
public Document(Rectangle pageSize,
int marginLeft,
int marginRight,
int marginTop,
int marginBottom);
下面两种比较有用�Q�如果是你想定义�U�张大小和边�~�的时候。对于Margin�Q�iText上提到“You can also change the margins while you are adding content. Note that the changes will only be noticed on the NEXT page. If you want the margins mirrored (odd and even pages), you can do this with this method: setMarginMirroring(true). ”不�q�，对于table��g��q�不好��。table�q�不�?x��)�?ji��n)理会(x��)你设定的margin�Q�如果想改变它的magin�q�是需要去改变它的宽度�Q�setWidth�Q��?br />
2 pdf表单

使用PdfStamper是可以填充pdf表单的，�q�样��q��Z��(ji��n)一�U�很好的报表生成思�\�?br />word制作报表样式-->acrobat转pdf-->itext填充数据-->输出pdf
�q�做非常��单，因�ؓ(f��)可以比较�Ҏ(gu��)��的控制pdf的样式。我对于Java的报表工具了(ji��n)解的�q�不多，不过在jasperreports�Q�即使用GUI工具做一个样式比较复杂的报表也不是怎么�Ҏ(gu��)��。比如有那种斜线的表��_(d��)��比较花哨的嵌套表根{��这��L(f��ng)��情况�q�是比较多见的，客户不会(x��)关系你实现�v来是否困难。不�q�想要��用这�U�方式也有不��的地方。首先是acrobat把word转化成pdf的时候，格式��L��保持不好�Q�特别的是字体。然后是文�g的体�U�这��L(f��ng)��成的pdf�?x��)比直接用iText生成的pdf文�g大很多，acrobat在pdf里加入了(ji��n)太多无用的信息。初�ơ��用iText填充Adobe Designer生成的pdf表单时会(x��)有点��麻�?ch��)。在Designer中设计了(ji��n)一个name的text文本框的�l�定名�ؓ(f��)name。照着iText中例子��用��用PdfStamper的setField�Ҏ(gu��)��去这样写form.setField("name", "XXXX");�q�不�?x��)成功。原因是Adobe Designer生成的表单名都是��h��层次的，它可能是�q�个样子form1[0].#subform[0].name[0]。不�q�我们可以用一个方法把它们列出来，只要做一�ơ就知道�l�构�?ji��n)，可以使用�c�M��下面的代码：(x��)
PdfReader reader = new PdfReader("form.pdf");
PdfStamper stamp = new PdfStamper(reader, new FileOutputStream("registered_flat.pdf"));
AcroFields form = stamp.getAcroFields();
for (Iterator it = form.getFields().keySet().iterator(); it
.hasNext();) {
System.out.println(it.next());
}
如果直接用iText�~�程生成的表单就不会(x��)有这��L(f��ng)��问题�Q�设定的什么名字就是什么名字�?br />
3 表单元素

pdf�q�不像html那样��h��良好清晰的结构，而是一个有层次的文��类型。在它的maillist里，作者说明了(ji��n)iText虽然可以操作现存的pdf文�g但是没办法去�q�原它的�l�构的。没办法像html一��P��能从一个pdf文�g获得一个清晰的“源文�g”的。关于层�ơ，可以从iText上得到详�l�的讲述�Q�获取去看看pdf规范。表单和普通文本是不在一个层上的。没办法适用对待文本表各一��h��它们��单的add�q�Document对象。获取一个cb直接�ȝ��l�对定位的方法可以加入表单元素，不过很多的时候因为排版�ƈ不能那么��单的��d��。就是在html中布局一样可以��用表格定位。想把一个表单元素加入cell�Q�要借助cell的setCellEvent�Ҏ(gu��)��。以一个checkbox��Z��。新��Z��个类CheckBoxForm�Q�实现PdfPCellEvent接口。需要实��C��个cellLayout的方法�?br /> (t��ng) public void cellLayout(PdfPCell cell, Rectangle position, PdfContentByte[] canvases)
position可以好好利用�Q�它包含当前cell的位�|�信息，你可以用它来��定自己checkbox的位�|��?br />position.top()-position.bottom()��p��得到高position.right()-position.left()可以得到长，如果需要这两个值得花可以如此计��。下面的代码��是定义一个宽度�ؓ(f��)a的checkbox的rectangle 。它在cell中水�q�_��中，垂直也居中�?br /> (t��ng) (t��ng) float bo = (position.top()-position.bottom()-a)/2;
(t��ng) (t��ng) float ao = (position.right()-position.left()-a)/2; (t��ng) (t��ng)
(t��ng) (t��ng) Rectangle rectangle = new Rectangle(position.left() + ao, position
(t��ng) (t��ng) (t��ng) (t��ng) (t��ng) .bottom() + bo, position.left() +ao+ a, position.bottom()+ bo + a);
然后把它加入Document
(t��ng) (t��ng) RadioCheckField tf = new RadioCheckField(writer, rectangle, fieldname,
(t��ng) (t��ng) (t��ng) (t��ng) (t��ng) "f");
(t��ng) (t��ng) tf.setCheckType(RadioCheckField.TYPE_SQUARE);
(t��ng) (t��ng) tf.setBorderWidth(1);
(t��ng) (t��ng) tf.setBorderColor(Color.black);
(t��ng) (t��ng) tf.setBackgroundColor(Color.white); (t��ng) (t��ng) (t��ng)
(t��ng) (t��ng) try {
(t��ng) (t��ng) (t��ng) (t��ng) PdfFormField field = tf.getCheckField(); (t��ng) (t��ng) (t��ng) (t��ng)
(t��ng) (t��ng) (t��ng) (t��ng) writer.addAnnotation(field);
(t��ng) (t��ng) } catch (IOException e) {
(t��ng) (t��ng) (t��ng) (t��ng) e.printStackTrace();
(t��ng) (t��ng) } catch (DocumentException e) {
(t��ng) (t��ng) (t��ng) (t��ng) e.printStackTrace();
(t��ng) (t��ng) }
其它的元素与此类伹{�?br />
4 PdfPTable和Table

说不上哪�U�更好用�Q�有时候不能不使用PdfPTable。可惜它只有setColspan�Ҏ(gu��)��Q�没有setRowspan。嵌套的时候也有区别，PdfPTable是用addcell�Q�）(j��)加入嵌套表的�Q�table则有一个更明了(ji��n)的方法insertTable�Q�）(j��)。PdfPTable惌��行设�|�border之类的操作要先获得一个默认cell�Q?br />pdfPTableName.getDefaultCell().setBorder(Rectangle.NO_BORDER);//讄��无框的表
另外在PdfPTable中，一些修饰属性会(x��)因�ؓ(f��)讄��的时��Z��正确而没有效果。如�Q�适用cell的构造函数加入了(ji��n)文本�Q�在cell的setVerticalAlignment�Q�）(j��)fangfa去设定垂直对齐方式就不会(x��)有效。还有一个有意思的不同是table默认外边框是加粗的，而PdfPTable则一��L(f��ng)��l��?br />
5 字体

iText的例子有很多��_��用，�l�出一些pdf的字体名�U�和�~�码�Q�如果想使用内嵌字体的话�?br />语言 PDF 字体�?
��体中�?STSong-Light
�J�体中文 MHei-Medium
MSung-Light
日语 HeiseiKakuGo-W5
HeiseiMin-W3
韩语 HYGoThic-Medium
HYSMyeongJo-Medium

字符�?�~�码
��体中�?UniGB-UCS2-H
UniGB-UCS2-V
�J�体中文 UniCNS-UCS2-H
UniCNS-UCS2-V
日语 UniJIS-UCS2-H
UniJIS-UCS2-V
UniJIS-UCS2-HW-H
UniJIS-UCS2-HW-V
韩语 UniKS-UCS2-H
UniKS-UCS2-H
必须要有Asian的包才可以用�Q�也可以使用TrueType字体�?br />

有猫�怼�的日�?/a> 2007-02-28 16:02 发表评论

Thu, 21 Dec 2006 08:10:00 GMT

/**
(t��ng) * 获取cell中的数据
(t��ng) * @param cell
(t��ng) * @return
(t��ng) */
(t��ng)private String readCell(HSSFCell cell) {
(t��ng) (t��ng)if (null == cell) {
(t��ng) (t��ng) (t��ng)return "";
(t��ng) (t��ng)}
(t��ng) (t��ng)SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd", Locale.CHINA);
(t��ng) (t��ng)switch (cell.getCellType()) {
(t��ng) (t��ng) (t��ng)case HSSFCell.CELL_TYPE_STRING: {
(t��ng) (t��ng) (t��ng) (t��ng)return Strings.trim(cell.getStringCellValue());
(t��ng) (t��ng) (t��ng)}
(t��ng) (t��ng) (t��ng)case HSSFCell.CELL_TYPE_NUMERIC: {
(t��ng) (t��ng) (t��ng) (t��ng)if(HSSFDateUtil.isCellDateFormatted(cell)){
(t��ng) (t��ng) (t��ng) (t��ng) (t��ng)
(t��ng) (t��ng) (t��ng) (t��ng) (t��ng)return sdf.format(cell.getDateCellValue());
(t��ng) (t��ng) (t��ng) (t��ng)}else{
(t��ng) (t��ng) (t��ng) (t��ng) (t��ng)return Strings.trim(new BigDecimal(cell.getNumericCellValue())
(t��ng) (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) (t��ng).toString());
(t��ng) (t��ng) (t��ng) (t��ng)}

(t��ng) (t��ng) (t��ng)}
(t��ng) (t��ng) (t��ng)case HSSFCell.CELL_TYPE_BOOLEAN: {
(t��ng) (t��ng) (t��ng) (t��ng)return Strings.trim(String.valueOf(cell.getBooleanCellValue()));
(t��ng) (t��ng) (t��ng)}
(t��ng) (t��ng) (t��ng)case HSSFCell.CELL_TYPE_FORMULA: {
(t��ng) (t��ng) (t��ng) (t��ng)return Strings.trim(String.valueOf(cell.getCellFormula()));
(t��ng) (t��ng) (t��ng)}
(t��ng) (t��ng) (t��ng)
(t��ng) (t��ng) (t��ng)default: {
(t��ng) (t��ng) (t��ng) (t��ng)return Strings.trim(cell.getStringCellValue());
(t��ng) (t��ng) (t��ng)}
(t��ng) (t��ng)}
(t��ng)}

有猫�怼�的日�?/a> 2006-12-21 16:10 发表评论

List 排序

Mon, 18 Dec 2006 12:58:00 GMT

class Mycomparator implements Comparator{

(t��ng) (t��ng) (t��ng)public int compare(Object arg0, Object arg1) {
(t��ng) (t��ng) (t��ng) (t��ng)Step obj0=(Step)arg0;
(t��ng) (t��ng) (t��ng) (t��ng)Step obj1=(Step)arg1;
(t��ng) (t��ng) (t��ng) (t��ng)if(obj0.getId() (t��ng) (t��ng) (t��ng) (t��ng) (t��ng)return 0;
(t��ng) (t��ng) (t��ng) (t��ng)}else{
(t��ng) (t��ng) (t��ng) (t��ng) (t��ng)return 1;
(t��ng) (t��ng) (t��ng) (t��ng)}
(t��ng) (t��ng) (t��ng)}
(t��ng) (t��ng) (t��ng)
(t��ng) (t��ng)}
(t��ng) (t��ng)Comparator comp = new Mycomparator();
(t��ng) (t��ng)Collections.sort(historyList,comp);

有猫�怼�的日�?/a> 2006-12-18 20:58 发表评论

Fri, 13 Oct 2006 01:12:00 GMT

(t��ng)import org.jdom.*;
import org.jdom.output.*;
import org.jdom.input.*;
import org.jdom.xpath.*;

import java.io.FileOutputStream;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.*;

/**
* @author Peter (C)www.ldtec.com
*
* 处理xml配置文�g
*
*/

public class SearchUtil {
private static String tablelistfile="C:/tomcat/webapps/csms/WEB-INF/search/tablelist.xml";

/**
*

通过�c�d��来获得xml文�g的信�?lt;/p>
* @param vbean
* @param filepath
* @param xpath
* @return result
*/
public static List search(Class vbean,String xpath){
List result=new ArrayList();
SAXBuilder builder=new SAXBuilder();
Document doc=null;
Element root=null;
try{
doc=builder.build(tablelistfile);
root=doc.getRootElement();
List xlist=XPath.selectNodes(root,xpath);
Field[] field=Class.forName(vbean.getName()).getDeclaredFields();
for(int i=0;iElement xele=(Element)xlist.get(i);
Object myclass=new Object();
myclass=Class.forName(vbean.getName()).newInstance();
for(int k=0;kString vname=field[k].getName();
String method=vname.substring(0,1).toUpperCase()+vname.substring(1,vname.length());
String vmethod="set"+method;
Class[] clazz = new Class[1] ;
clazz[0] = String.class ;
Method met = Class.forName(vbean.getName()).getMethod(vmethod,clazz) ;
Object[] obj = new Object[1] ;
obj[0] = xele.getAttributeValue(field[k].getName());
Object ret = met.invoke(myclass,obj) ;
}
result.add(myclass);
}
}catch(Exception e){
e.printStackTrace();
}
return result;
}

/**
*

xml文�g路径从界面传�q�来..

* @param vbean
* @param filepath
* @param xpath
* @return
*/
public static List search(Class vbean,String filepath ,String xpath){
List result=new ArrayList();
SAXBuilder builder=new SAXBuilder();
Document doc=null;
Element root=null;
try{
doc=builder.build(filepath);
root=doc.getRootElement();
List xlist=XPath.selectNodes(root,xpath);
Field[] field=Class.forName(vbean.getName()).getDeclaredFields();
for(int i=0;iElement xele=(Element)xlist.get(i);
Object myclass=new Object();
myclass=Class.forName(vbean.getName()).newInstance();
for(int k=0;kString vname=field[k].getName();
String method=vname.substring(0,1).toUpperCase()+vname.substring(1,vname.length());
String vmethod="set"+method;
Class[] clazz = new Class[1] ;
clazz[0] = String.class ;
Method met = Class.forName(vbean.getName()).getMethod(vmethod,clazz) ;
Object[] obj = new Object[1] ;
obj[0] = xele.getAttributeValue(field[k].getName());
Object ret = met.invoke(myclass,obj) ;
}
result.add(myclass);
}
}catch(Exception e){
e.printStackTrace();
}
return result;
}

/**
*

xml文�g路径由页面传�q�来

* @param vbean
* @param filepath
* @param xpath
* @param map
* @return
*/
public static boolean modify(Class vbean,String filepath,String xpath,Map map){
boolean result=false;
SAXBuilder builder=new SAXBuilder();
Document doc=null;
Element root=null;
try{
doc=builder.build(filepath);
root=doc.getRootElement();
List xlist=XPath.selectNodes(root,xpath);
Element xele=(Element)xlist.get(0);
Field[] field=Class.forName(vbean.getName()).getDeclaredFields();
for(int k=0;kxele.setAttribute(field[k].getName(),(String) map.get(field[k].getName()));
}

Format format = Format.getCompactFormat();
format.setEncoding("gb2312");
format.setIndent(" ");
XMLOutputter XMLOut = new XMLOutputter(format);
XMLOut.output(doc,new FileOutputStream(filepath));
result=true;
}catch(Exception e){
e.printStackTrace();
}
return result;
}

/**
*

修改某个节点

* @param vbean
* @param xpath
* @return
*/
public static boolean modify(Class vbean,String xpath,Map map){
boolean result=false;
SAXBuilder builder=new SAXBuilder();
Document doc=null;
Element root=null;
try{
doc=builder.build(tablelistfile);
root=doc.getRootElement();
List xlist=XPath.selectNodes(root,xpath);
Element xele=(Element)xlist.get(0);
Field[] field=Class.forName(vbean.getName()).getDeclaredFields();
for(int k=0;kxele.setAttribute(field[k].getName(),(String) map.get(field[k].getName()));
}

Format format = Format.getCompactFormat();
format.setEncoding("gb2312");
format.setIndent(" ");
XMLOutputter XMLOut = new XMLOutputter(format);
XMLOut.output(doc,new FileOutputStream(tablelistfile));
result=true;
}catch(Exception e){
e.printStackTrace();
}
return result;
}

/**
*

文�g路径由页面传输进�?

* @param vbean
* @param filepath
* @param xpath
* @param map
* @return
*/
public static boolean add(Class vbean,String filepath,String xpath,Map map,String strele){
boolean result=false;
SAXBuilder builder=new SAXBuilder();
Document doc=null;
Element root=null;
try{

doc=builder.build(filepath);
root=doc.getRootElement();
Element tablelistEle=(Element)XPath.selectSingleNode(root,xpath);
List xlist=tablelistEle.getChildren();
Element xele=new Element(strele);
Field[] field=Class.forName(vbean.getName()).getDeclaredFields();
for(int k=0;kxele.setAttribute(field[k].getName(),(String) map.get(field[k].getName()));
}
xlist.add(xele);

Format format = Format.getCompactFormat();
format.setEncoding("gb2312");
format.setIndent(" ");
XMLOutputter XMLOut = new XMLOutputter(format);
XMLOut.output(doc,new FileOutputStream(filepath));
result=true;
}catch(Exception e){
e.printStackTrace();
}
return result;
}
/**
*

在当前xpath路径�?��d��一个节�?lt;/p>
* @param vbean
* @param xpath
* @param map
* @return
*/
public static boolean add(Class vbean,String xpath,Map map,String strele){
boolean result=false;
SAXBuilder builder=new SAXBuilder();
Document doc=null;
Element root=null;
try{

doc=builder.build(tablelistfile);
root=doc.getRootElement();
Element tablelistEle=(Element)XPath.selectSingleNode(root,xpath);
List xlist=tablelistEle.getChildren();
Element xele=new Element(strele);
Field[] field=Class.forName(vbean.getName()).getDeclaredFields();
for(int k=0;kxele.setAttribute(field[k].getName(),(String) map.get(field[k].getName()));
}
xlist.add(xele);

Format format = Format.getCompactFormat();
format.setEncoding("gb2312");
format.setIndent(" ");
XMLOutputter XMLOut = new XMLOutputter(format);
XMLOut.output(doc,new FileOutputStream(tablelistfile));
result=true;
}catch(Exception e){
e.printStackTrace();
}
return result;
}

/**
*

文�g路径由页面传�q�来

* @param vbean
* @param filepath
* @param xpath
* @param map
* @return
*/
public static boolean remove(Class vbean,String filepath,String xpath,Map map){
boolean result=false;
SAXBuilder builder=new SAXBuilder();
Document doc=null;
Element root=null;
try{
doc=builder.build(filepath);
root=doc.getRootElement();
List templist=XPath.selectNodes(root,xpath);
String key=(String)map.get("key");
String value="/(String)map.get(""value");
int row=0;
boolean flag=false;
for(int i=0;iElement tempele=(Element)templist.get(i);
if(tempele.getAttributeValue(key).equals(value)){
row=i;
flag=true;
}
}
if(flag==false){
return false;
}
int pos=0;
pos=xpath.lastIndexOf("/");
String vpath=xpath.substring(0,pos);
Element xele=(Element)XPath.selectSingleNode(root,vpath);
List xlist=xele.getChildren();
if(flag){
xlist.remove(row);
result=true;
}

Format format = Format.getCompactFormat();
format.setEncoding("gb2312");
format.setIndent(" ");
XMLOutputter XMLOut = new XMLOutputter(format);
XMLOut.output(doc,new FileOutputStream(filepath));
result=true;
}catch(Exception e){
e.printStackTrace();
}
return result;
}
/**
*

删除某个节点,map参数必须有一个键名�ؓ(f��)key和value

* @param vbean
* @param xpath
* @param map
* @return result
*/
public static boolean remove(Class vbean,String xpath,Map map){
boolean result=false;
SAXBuilder builder=new SAXBuilder();
Document doc=null;
Element root=null;
try{
doc=builder.build(tablelistfile);
root=doc.getRootElement();
List templist=XPath.selectNodes(root,xpath);
String key=(String)map.get("key");
String value="/(String)map.get(""value");
int row=0;
boolean flag=false;
for(int i=0;iElement tempele=(Element)templist.get(i);
if(tempele.getAttributeValue(key).equals(value)){
row=i;
flag=true;
}
}
if(flag==false){
return false;
}
int pos=0;
pos=xpath.lastIndexOf("/");
String vpath=xpath.substring(0,pos);
Element xele=(Element)XPath.selectSingleNode(root,vpath);
List xlist=xele.getChildren();
if(flag){
xlist.remove(row);
result=true;
}

Format format = Format.getCompactFormat();
format.setEncoding("gb2312");
format.setIndent(" ");
XMLOutputter XMLOut = new XMLOutputter(format);
XMLOut.output(doc,new FileOutputStream(tablelistfile));
result=true;
}catch(Exception e){
e.printStackTrace();
}
return result;
}
public static void main(String args[]){

Map kk=new HashMap();
kk.put("f1","xxxx");
kk.put("f2","MMMM");
kk.put("f3","JJJJ");
String v="kkk()";

String temp=(v.substring(0,1)).toUpperCase();
String vv=temp+v.substring(1,v.length());
System.out.println("temp->>"+temp);
System.out.println("vv->"+vv);
String path="c:/kk/lo.xml";
int start=path.lastIndexOf("/");
int end=path.lastIndexOf(".");
String xx=path.substring(start+1,end);
System.out.println("----xx->"+xx);
}

}

有猫�怼�的日�?/a> 2006-10-13 09:12 发表评论

JDOM入门

Fri, 13 Oct 2006 01:09:00 GMT

1) JDOM的组�?��M��一个框枉��有自��q��l�成�l�构,JDOM虽说不上是一个框�?因�ؓ(f��)�Ҏ(gu��)��有提供给我们��M��的扩展框�?如果说其是一个工�?那么�Ҏ(gu��)��一个结构非常简单的XML操作工具,其包插如下包: org.JDOM org.JDOM.input org.JDOM.output org.JDOM.adapters org.JDOM.transform 我们可以从字面上�ȝ��解每个包的作�? JDOM包含以下�c�d�� Attribute CDATA Coment DocType Document Element EntityRef Namespace ProscessingInstruction Text 在开发jdom应用�E�序中我们所用的所有类�?...��p��几个�c�d��很简单就可理�?下面介始一个每个开发包的作�? *　org.JDOM.transform 在涉�?qi��ng)xslt格式转换时应使用下面�?个类 JDOMSource JDOMResult �Q�　org.JDOM.input 输入�c�，一般用于文档的创徏工作 SAXBuilder DOMBuilder ResultSetBuilder 注jdom的输入源非常�q�泛,可以是字�W�串,可以是其它的XML工具生成的XML文�g�? * org.JDOM.output 输出�c�，用于文档转换输出 XMLOutputter SAXOutputter DomOutputter JTreeOutputter 从以上输出类可以看出jdom可以输出常用�c�d��号XML文�g 下面是我写的一个读xml�Q�一个创建XML的两个例�E? ================== package jdom; /** * @author * TODO 学习(f��n)用例 ,pdw2009@tom.com * / import org.jdom.; import org.jdom.input.; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.; import java.util.; public class readabc { public static void main(String[] args) throws Exception{ SAXBuilder sb=new SAXBuilder();//建立构造器 Document doc=sb.build(new FileInputStream("E:\\eclipse\\myworkspace\\base\\src\\jdom\\abc.xml")); Element root=doc.getRootElement(); //获得根结�? List list=root.getChildren(); //��所有根�l�点下的子结�Ҏ(gu��)��入list for(int i=0;i System.out.println("----------------------"); Element item=(Element)list.get(i); //获得实体�l�体 //用于获得属�? String name=item.getAttributeValue("id"); System.out.println("Name---->"+name); //获得�?ji��n)节�? String temptitle=item.getChildText("title"); System.out.println("��试"+temptitle); //使用item获得子节点属�? Element sub=item.getChild("title"); String title=sub.getText(); System.out.println("title---->"+title); Element sub2=item.getChild("email"); String email=sub2.getText(); System.out.println("email-->"+email); Element sub3=item.getChild("content"); String content=sub3.getValue(); System.out.println("content-->"+content); } } } -----------以上代码要读的xml文�g内容如下---------------------------- i jhgjg jhgjg jhjh fdsa fasdf fsadfa -------------------------------------------------------------------------------------------- 创徏一个xml文�g ---------------- / * Created on 2000-1-1 * * TODO To change the template for this generated file go to * Window - Preferences - Java - Code Style - Code Templates / package jdom; import java.io.FileWriter; import org.jdom.; import org.jdom.adapters.; import org.jdom.adapters.; import org.jdom.input.; import org.jdom.output.Format; import org.jdom.output.XMLOutputter; import java.io.; /** * @author * * TODO 学习(f��n)用例 ,pdw2009@tom.com * */ public class createonexml { public static void main(String[] args)throws Exception { Element carElement=new Element("car"); Document mydoc=new Document(carElement); //carElement.addAttribute(new Attribute("vin", "123fhg5869705iop90")); //��d��内容 carElement.addContent(new Element("make").addContent("DF")); carElement.addContent(new Element("year").addContent("1997")); carElement.addContent(new Element("color").addContent("green")); carElement.addContent(new Element("listenr").addContent("SSDDDBBA")); //��d��注解 carElement.addContent(new Comment("描述一辆�R")); //输出到文�? XMLOutputter outer=new XMLOutputter(); FileWriter fw=new FileWriter("E:\\eclipse\\myworkspace\\base\\src\\jdom\\car.xml"); Format fm=Format.getPrettyFormat(); //讑֮�XML文�g的输出格�? fm.setEncoding("GBK"); outer.setFormat(fm); outer.output(mydoc,fw); outer.output(mydoc,System.out); fw.close(); } } ------------------以上代码生成的xml文�g内容如下--------------- DF 1997 green SSDDDBBA --------------------------------------------------------------------------------------- 在jdom 1�?版本里输出xml文��Ӟ��我们必须定义该文��的格式�Q�如xml文�g的编辑格式，输出的xml文档是否换行�Q�是否删除我作的�I�格�Q�等。所以在输出xml文档旉��定义一个Format对象�c?�q�给相关属性赋��\|��然后讑֮�XMLOutputter所用到的格式类,outter.setFormat()�? 请关注我有关JDOM的文章希望对你有所帮助。。。。�? 详细说明请参考jdom API文��
1
lonely wolf
1 ��一个xml文�g输出��C��个字�W�串对象�? XMLOutputter outputter = new XMLOutputter(); Element element = new Element("Greeting"); String hello = outputter.outputString(element); 2 一个list转换成一个xml文�g。。虽然其list中的字段是固定了(ji��n)�Q�我们也可以修改�c�集转换代码�Q�以实现动态字�D늚�转换 package jdom; import java.io.FileWriter; import java.util.; import org.jdom.; import org.jdom.input.; import org.jdom.output.; /** * @author pdw2009@tom.com * TODO ��一个List对象,转换一个XML文�g / class Person{ private String ID; //学号 private String name; //姓名 private String addr; //地址 private String tel; //联系�?sh��)�? private String email; //email地址 /* * @return Returns the addr. / public String getAddr() { return addr; } /* * @param addr The addr to set. / public void setAddr(String addr) { this.addr = addr; } /* * @return Returns the iD. / public String getID() { return ID; } /* * @param id The iD to set. / public void setID(String id) { ID = id; } /* * @return Returns the name. / public String getName() { return name; } /* * @param name The name to set. / public void setName(String name) { this.name = name; } /* * @return Returns the tel. / public String getTel() { return tel; } /* * @param tel The tel to set. / public void setTel(String tel) { this.tel = tel; } /* * @return Returns the email. / public String getEmail() { return email; } /* * @param email The email to set. */ public void setEmail(String email) { this.email = email; } } public class listtoxml { public List creatlist(){ List list=new ArrayList(); Person person=new Person(); person.setAddr("�q�西合��"); person.setID("1048"); person.setName("hfggf"); person.setTel("138777778888"); person.setEmail("pdw2009@tom.com"); list.add(person); person.setAddr("�q�西南宁"); person.setID("1036"); person.setName("蠢卢"); person.setTel("1387778888"); person.setEmail("XXXXX@tom.com"); list.add(person); return list; } public static void main(String[] args) throws Exception { listtoxml lx=new listtoxml(); List list=lx.creatlist(); //生成Person�cȝ��对象list Element root=new Element("Student");//�Ҏ(gu��)��? Iterator it=list.iterator(); //获取iterator接口 while(it.hasNext()){ Person p=(Person)it.next(); Element person=new Element("Person"); person.setAttribute("ID",p.getID()); root.addContent(person); //在根元素�?��d��一个person子元�? Element ele=new Element("Name"); ele.setText(p.getName()); person.addContent(ele); //在person元素下添加一个name的子元素 Element addr=new Element("Address"); addr.setText(p.getAddr()); person.addContent(addr); Element tel=new Element("tel"); tel.setText(p.getTel()); person.addContent(tel); Element email=new Element("email"); email.setText(p.getEmail()); person.addContent(email); } Document doc=new Document(root); XMLOutputter outer=new XMLOutputter(); Format fm=Format.getPrettyFormat(); fm.setEncoding("GBK"); outer.setFormat(fm); FileWriter fw=new FileWriter("E:\\eclipse\\myworkspace\\base\\src\\jdom\\listtoxml.xml"); outer.output(doc,fw); //只需要把自己定义的FileWriter替换掉System.out��可以确定xml文�g的输��Z��(ji��n) } } 仅供参与�Q�只需要添加你的jdbc�q�接便于工作可实玎ͼ�从数据库里取�?gu��)��录�ƈ�?/td>

定位节点
XML是树(w��i)状结构，�c�M��档案�pȝ��内数据夹的结构，XPath也类似��案系�l�的路径命名方式。不�q?/span>XPath 是一�U�模�?/span>(Pattern)�Q�可以选出 XML��案中，路径�W�合某个模式的所有节点出来。例如要�?/span>catalog底下�?/span>cd中所�?/span>price元素可以用：(x��)
/catalog/cd/price

如果XPath的开头是一个斜�U�（/�Q�代表这是绝对�\径。如果开头是两个斜线�Q?/span>//�Q�表�C�文件中所有符合模式的元素都会(x��)被选出来，即��是处于树(w��i)中不同的层��也会(x��)被选出来。以下的语法�?x��)选出文�g中所有叫�?/span>cd的元素（在树(w��i)中的��M��层��都会(x��)被选出来）(j��)�Q?/span>

//cd

选择未知的元�?/span>
使用星号�Q?/span>Wildcards,�Q�）(j��)可以选择未知的元素。下面这个语法会(x��)选出/catalog/cd 的所有子元素�Q?/span>

/catalog/cd/*

以下的语法会(x��)选出所�?/span>catalog的子元素中，包含�?/span>price作�ؓ(f��)子元素的元素�?/span>

/catalog/*/price

以下的语法会(x��)选出有两层父节点�Q�叫�?/span>price的所有元素�?/span>

/*/*/price

以下的语法会(x��)选择出文件中的所有元素�?/span>

//*

要注意的是，惌���存取不分层��的元素，XPath语法必须以两个斜�U�开�?/span>(//)�Q�想要存取未知元素才用星�?/span>(*)�Q�星号只能代表未知名�U�的元素�Q�不能代表未知层�U�的元素�?/span>

选择分支
使用中括号可以选择分支。以下的语法�?/span>catalog的子元素中取出第一个叫�?/span>cd的元素�?/span>XPath的定义中没有�W?/span>0元素�q�种东西�?/span>

/catalog/cd[1]

以下语法选择catalog中的最后一�?/span>cd元素�Q�（XPathj�q�没有定�?/span> first() �q�种函式喔，用上例的 [1]��可以取出第一个元素�?/span>

/catalog/cd[last()]

以下语法选出含有price子元素的所�?/span>/catalog/cd元素�?/span>

/catalog/cd[price]

以下语法选出price元素的值等�?/span>10.90的所�?/span>/catalog/cd元素

/catalog/cd[price=10.90]

以下语法选出price元素的值等�?/span>10.90的所�?/span>/catalog/cd元素 �?/span>price元素

/catalog/cd[price=10.90]/price

选择一个以上的路径
使用Or操作�?/span>(|)��可以选择一个以上的路径。例如：(x��)

/catalog/cd/title | catalog/cd/artist

 选择所�?/span>title以及(qi��ng)artist元素

 //title | //artist

选择所�?/span>title以及(qi��ng)artist以及(qi��ng)price元素

//title | //artist | //price

 选择属�?/span> 

�?/span>XPath中，除了(ji��n)选择元素以外�Q�也可以选择属性。属性都是以@开头。例如选择文�g中所有叫�?/span>country的属性：(x��)

 //@country

选择所有含�?/span>country�q�个属性的cd元素�Q?/span>

//cd[@country]

以下语法选择出含有属性的所�?/span>cd元素

//cd[@*]

以下语法选择�?/span>country属性��gؓ(f��)UK�?/span>cd元素

//cd[@country='UK']

有猫�怼�的日�?/a> 2006-10-13 09:09 发表评论

Sat, 07 Oct 2006 12:52:00 GMT

摘要: JAVA 中定义了(ji��n)两种输入输出��：(x��)字符��、字节流。字节流�׃��个顶层的操象�c�， InputStream �? OutputStream �c�L��成，每个操象�c�，都有其具体子�c�R��下表是一些常用的字节��类�? (t��ng) ... 阅读全文

有猫�怼�的日�?/a> 2006-10-07 20:52 发表评论

关于�U�程

Sat, 07 Oct 2006 12:48:00 GMT

摘要: JAVA 多线�E�系�l�徏立于 Thread �c�，它的�Ҏ(gu��)��Q�它的共伴接�? Runnable 基础上， Thread �c�d��装了(ji��n)多线�E�的执行。�ؓ(f��)创徏一个新的线�E�，你的�E�序必须实现 Runnabel 接口或��(h��)�? Thread �c�R�? Thread �c�d��义了(ji��n)好几个方�?.. 阅读全文

有猫�怼�的日�?/a> 2006-10-07 20:48 发表评论