Go语言视频零基础入门到精通

javalearner

一、测试用的em.xml
<?xml version="1.0" encoding="GB2312"?>
  <EW cmd="login" mod="Login" version="6.0">
    <Source uns="" type="user"/>
    <Username>zhangzhiyun@hp</Username>
    <Password>111111</Password>
   <Version>6.01.06.00</Version>
</EW>
  
   
      
     
   
  
   
  
二、Dom4jTest.java

1. import java.io.BufferedReader;
   
2. import java.io.BufferedWriter;
   
3. import java.io.File;
   
4. import java.io.FileReader;
   
5. import java.io.FileWriter;
   
6. import java.io.IOException;
   
7. import org.apache.log4j.Logger;
   
8. import org.dom4j.Attribute;
   
9. import org.dom4j.DocumentException;
   
10. import org.dom4j.DocumentHelper;
    
11. import org.dom4j.Element;
    
12. /**
    
13.   * @author julysea
    
14.   *
    
15.   * 一个用Dom4j解析xml的例子
    
16.   *
    
17.   */
    
18. public class Dom4jTest {
    
19.    private static final Logger logger = Logger.getLogger(Dom4jTest.class);
    
20.     public static void main(String[] args) throws IOException,
    
21.        DocumentException {
    
22.          BufferedReader reader=new BufferedReader(new FileReader("ew.xml"));
    
23.          String tempStr;
    
24.          String ewXml="";
    
25.          while((tempStr=reader.readLine())!=null) {
    
26.              ewXml=ewXml+tempStr;
    
27.              logger.debug(tempStr);
    
28.          }
    
29.         Element root = null;
    
30.          root = DocumentHelper.parseText(ewXml).getRootElement();
    
31.          Attribute rootCmd=root.attribute("cmd");
    
32.          Attribute rootVersion=root.attribute("version");
    
33.          logger.debug("rootNmae = "+root.getName());
    
34.          logger.debug("EW"cmd = "+rootCmd.getValue());
    
35.          logger.debug("EW"version = "+rootVersion.getValue());
    
36.          Element usrName=root.element("Username");
    
37.          logger.debug("EW.Username value = "+usrName.getTextTrim());
    
38.          Element source=root.element("Source");
    
39.          Attribute sourceUns=source.attribute("uns");
    
40.          logger.debug("EW.Source"uns＝"+sourceUns.getValue());
    
41.          Attribute sourceType=source.attribute("type");
    
42.          logger.debug("EW.Source"type = "+sourceType.getValue());
    
43.         //创建一个Xml文件
    
44.         Element user=DocumentHelper.createElement("User");
    
45.         user.addAttribute("type", "user");
    
46.         user.addElement("name").addAttribute("type", "PinYin").setText("Julysea");
    
47.         user.addElement("age").setText("29");
    
48.         String oneXml=user.asXML();
    
49.         
    
50.         BufferedWriter out=new BufferedWriter(new FileWriter("oneXml.xml"));
    
51.          out.write(oneXml);
    
52.          out.close();
    
53.      }
    
54. }

复制代码

三、运行：将log4j.properties文件与Dom4jTest.java放同一目录下编译运行，以下是输出结果：
log4e.log文件内容： 2006-04-04 09:16:13,363 [main] DEBUG Dom4jTest - <?xml version="1.0" encoding="GB2312"?>
2006-04-04 09:16:13,373 [main] DEBUG Dom4jTest - <EW cmd="login" mod="Login" version="6.0">
2006-04-04 09:16:13,373 [main] DEBUG Dom4jTest - <Source uns="" type="user"/>
2006-04-04 09:16:13,373 [main] DEBUG Dom4jTest - <Username>zhangzhiyun@hp</Username>
2006-04-04 09:16:13,373 [main] DEBUG Dom4jTest - <Password>111111</Password>
2006-04-04 09:16:13,373 [main] DEBUG Dom4jTest - <Version>6.01.06.00</Version>
2006-04-04 09:16:13,373 [main] DEBUG Dom4jTest - </EW>
2006-04-04 09:16:13,594 [main] DEBUG Dom4jTest - rootNmae = EW
2006-04-04 09:16:13,594 [main] DEBUG Dom4jTest - EW"cmd = login
2006-04-04 09:16:13,594 [main] DEBUG Dom4jTest - EW"version = 6.0
2006-04-04 09:16:13,594 [main] DEBUG Dom4jTest - EW.Username value = zhangzhiyun@hp
2006-04-04 09:16:13,594 [main] DEBUG Dom4jTest - EW.Source"uns＝
2006-04-04 09:16:13,594 [main] DEBUG Dom4jTest - EW.Source"type = user

oneXml.xml的内容： <User type="user"><name type="PinYin">Julysea</name><age>29</age></User>  四、log4j日志配置文件：log4j.properties log4j.rootCategory=ConApp, FileApp
# ConApp is set to be a ConsoleAppender.
log4j.appender.ConApp=org.apache.log4j.ConsoleAppender
log4j.appender.ConApp.Target=System.out
log4j.appender.ConApp.layout=org.apache.log4j.PatternLayout
log4j.appender.ConApp.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
# FileApp
log4j.appender.FileApp=org.apache.log4j.RollingFileAppender
log4j.appender.FileApp.File=./log4e.log
log4j.appender.FileApp.MaxFileSize=500KB
# Keep one backup file
log4j.appender.FileApp.MaxBackupIndex=1
log4j.appender.FileApp.layout=org.apache.log4j.PatternLayout
log4j.appender.FileApp.layout.ConversionPattern=%d [%t] %-5p %c - %m%n
  

  
  
   
   

     
   

     
   
  


源码下载：http://file.javaxxz.com/2014/10/10/015842203.zip