dom4j验证xml

用dom4j来验证xml文件是否匹配本地的一个dtd真的是相当方便

官方包下载地址：http://www.dom4j.org/download.html

XmlMain.java文件：

 

package com.dianzi.test;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

import org.dom4j.Document;
import org.dom4j.io.SAXReader;
import org.xml.sax.EntityResolver;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

/**
 * @author dianzi
 *
 */
public class XmlMain {

 /**
  * @param args
  */
 public static void main(String[] args) {

  File file = new File("./src/com/dianzi/test/Log-Sample01.xml");
  if (file.exists()) {
   SAXReader builder = new SAXReader();
  
   builder.setValidation(false);//不验证xml文件内的dtd
   builder.setEntityResolver(new EntityResolver() {
    public InputSource resolveEntity(String publicId,
      String systemId) throws SAXException, IOException {
      

     // ////////////////////////////
     /* return new InputSource("./log.dtd");//此句return可用以下一直到return is代替*/
     InputStream stream = new FileInputStream(
       "./src/com/dianzi/test/log.dtd");
     InputSource is = new InputSource(stream);
     is.setPublicId(publicId);
     is.setSystemId(systemId);
     return is;
    }
   });

   try {
    
    Document doc = builder.read(file);
    System.out.println(doc);
   } catch (Exception e) {
    e.printStackTrace();
   }
  } else {
   System.out.println("can not find xml file:"
     + file.getAbsolutePath());
  }

 }

}

 

 

Log-Sample01.xml文件：

 

 

<?xml version="1.0" encoding="gb2312"?>
<!DOCTYPE form-validation PUBLIC
          "-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.0//EN"
          "http://jakarta.apache.org/commons/dtds/validator_1_0.dtd">

<display>
 <category name="CMS底层管理">
  <portlet id="templateportlet"/>
  <portlet id="ComponentPortlet"/>
 </category>
</display>

 

 

 

log.dtd文件：

 

<!--
This is the DTD for the Display parameters for Liferay Portal.

<!DOCTYPE display PUBLIC
 "-//Liferay//DTD Display 4.0.0//EN"
 "http://www.liferay.com/dtd/liferay-display_4_0_0.dtd">
-->


<!ELEMENT display (category*)>


<!ELEMENT category (category*, portlet*)>


<!ATTLIST category
 name CDATA #REQUIRED
>


<!ELEMENT portlet (#PCDATA)>


<!ATTLIST portlet
 id CDATA #REQUIRED
>

 

 

最后导入最新的dom4j-1.6.1.jar开发包就ok了，至于如何解析遍历xml文件还在研究中