本文介绍了一个使用DOM解析XML文件的具体示例，展示了如何通过Java实现XML文件的读取与解析，并将结果展示在JSP页面上。代码示例中包含了XML文件结构、Java解析类MyDOMBean以及JSP页面展示部分。
1.XML文件
<?xml version="1.0" encoding="GB2312" ?>
<!-- 个人履历表-->
<resume>
<person id="01">
<name>张三</name>
<birthday>03/24/1975</birthday>
<phone>1111-1111</phone>
<address>大连</address>
</person>
<person id="02">
<name>李四</name>
<birthday>9/26/1978</birthday>
<phone>2222-2222</phone>
<address>南京</address>
</person>
<person id="03">
<name>王五</name>
<birthday>11/09/1979</birthday>
<phone>3333-3333</phone>
<address>武汉</address>
</person>
<person id="04">
<name>赵六</name>
<birthday>6/04/1973</birthday>
<phone>4444-4444</phone>
<address>青岛</address>
</person>
<person id="05">
<name>陈七</name>
<birthday>12/19/1977</birthday>
<phone>5555-5555</phone>
<address>上海</address>
</person>
</resume>
2.MyDOMBean.java
package test;
import org.xml.sax.*;
import javax.xml.parsers.*;
import org.w3c.dom.*;
import java.io.*;
public class MyDOMBean implements java.io.Serializable ...{
private static String xmlStr="";
private static final String PATH="file:///";
public MyDOMBean() ...{
}
public String getString()...{
return xmlStr;
}
public static Document getDocument(String filename) throws Exception ...{
xmlStr="";
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
// 设定解析的叁数
dbf.setIgnoringComments(true);
dbf.setIgnoringElementContentWhitespace(true);
DocumentBuilder db = dbf.newDocumentBuilder();
//导入XML文件
Document doc = db.parse(PATH+filename);
return doc;
}
public void traverseTree(Node node) throws Exception ...{
if(node == null) ...{
return;
}
int type = node.getNodeType();
switch (type) ...{
// handle document nodes
case Node.DOCUMENT_NODE: ...{
xmlStr+="<tr>";
traverseTree(((Document)node).getDocumentElement());
break;
}
// handle element nodes
case Node.ELEMENT_NODE: ...{
String elementName = node.getNodeName();
if(elementName.equals("person")) ...{
xmlStr+="</tr><tr>";
}
NodeList childNodes =
node.getChildNodes();
if(childNodes != null) ...{
int length = childNodes.getLength();
for (int loopIndex = 0; loopIndex <
length ; loopIndex++)
...{
traverseTree(childNodes.item(loopIndex));
}
}
break;
}
// handle text nodes
case Node.TEXT_NODE: ...{
String data = node.getNodeValue().trim();
if((data.indexOf(" ") <0) && (data.length()> 0)) ...{
xmlStr+="<td>"+data+"</td>";
}
}
}
}
}
3.jsp文件
<html>
<head>
<title>使用DOM解析器</title>
</head>
<%...@ page import="org.w3c.dom.*"%>
<%...@ page contentType="text/html;charset=GB2312" %>
<body bgcolor="#CFF1E1">
<center>
<h2>个人履历表（DOM版）</h2>
<table border="1" width="80%">
<tr>
<td>姓名</td>
<td>出生年月</td>
<td>电话号码</td>
<td>居住地</td>
</tr>
<jsp:useBean id="domparser" class="test.MyDOMBean" />
<%...
Document doc = domparser.getDocument(request.getRealPath("/") + "08_02.xml");
domparser.traverseTree(doc);
out.print(domparser.getString());
%>
</body>
</html>
<?xml version="1.0" encoding="GB2312" ?> <!-- 个人履历表--> <resume><person id="01"> <name>张三</name> <birthday>03/24/1975</birthday> <phone>1111-1111</phone> <address>大连</address></person> <person id="02"> <name>李四</name> <birthday>9/26/1978</birthday> <phone>2222-2222</phone> <address>南京</address></person> <person id="03"> <name>王五</name> <birthday>11/09/1979</birthday> <phone>3333-3333</phone> <address>武汉</address></person> <person id="04"> <name>赵六</name> <birthday>6/04/1973</birthday> <phone>4444-4444</phone> <address>青岛</address></person> <person id="05"> <name>陈七</name> <birthday>12/19/1977</birthday> <phone>5555-5555</phone> <address>上海</address></person> </resume> 2.MyDOMBean.java
package test;import org.xml.sax.*; import javax.xml.parsers.*;import org.w3c.dom.*;import java.io.*;public class MyDOMBean implements java.io.Serializable ...{ private static String xmlStr=""; private static final String PATH="file:///"; public MyDOMBean() ...{ } public String getString()...{ return xmlStr; } public static Document getDocument(String filename) throws Exception ...{ xmlStr=""; DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); // 设定解析的叁数 dbf.setIgnoringComments(true); dbf.setIgnoringElementContentWhitespace(true); DocumentBuilder db = dbf.newDocumentBuilder(); //导入XML文件 Document doc = db.parse(PATH+filename); return doc; } public void traverseTree(Node node) throws Exception ...{ if(node == null) ...{ return; } int type = node.getNodeType(); switch (type) ...{ // handle document nodes case Node.DOCUMENT_NODE: ...{ xmlStr+="<tr>"; traverseTree(((Document)node).getDocumentElement()); break; } // handle element nodes case Node.ELEMENT_NODE: ...{ String elementName = node.getNodeName(); if(elementName.equals("person")) ...{ xmlStr+="</tr><tr>"; } NodeList childNodes = node.getChildNodes(); if(childNodes != null) ...{ int length = childNodes.getLength(); for (int loopIndex = 0; loopIndex < length ; loopIndex++) ...{ traverseTree(childNodes.item(loopIndex)); } } break; } // handle text nodes case Node.TEXT_NODE: ...{ String data = node.getNodeValue().trim(); if((data.indexOf(" ") <0) && (data.length()> 0)) ...{ xmlStr+="<td>"+data+"</td>"; } } } }}3.jsp文件
<html><head><title>使用DOM解析器</title></head><%...@ page import="org.w3c.dom.*"%><%...@ page contentType="text/html;charset=GB2312" %><body bgcolor="#CFF1E1"><center><h2>个人履历表（DOM版）</h2><table border="1" width="80%"><tr><td>姓名</td><td>出生年月</td><td>电话号码</td><td>居住地</td></tr><jsp:useBean id="domparser" class="test.MyDOMBean" /><%... Document doc = domparser.getDocument(request.getRealPath("/") + "08_02.xml"); domparser.traverseTree(doc); out.print(domparser.getString());%></body></html>
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