编程用JAVA解析XML 的方式.

正确答案：

:用SAX 方式解析XML，XML 文件如下：
<?xml version=1.0 encoding=gb2312?>
<person>
<name>王小明</name>
<college>信息学院</college>
<telephone>6258113</telephone>
<notes>男,1955 年生,博士，95 年调入海南大学</notes>
</person>
事件回调类SAXHandler.java
import java.io.*;
import java.util.Hashtable;
import org.xml.sax.*;
public class SAXHandler extends HandlerBase
{
private Hashtable table = new Hashtable();
private String currentElement = null;
private String currentValue = null;
public void setTable(Hashtable table)
{
this.table = table;
}
public Hashtable getTable()
{
return table;
}
public void startElement(String tag, AttributeList attrs)
throws SAXException
{
currentElement = tag;
}
public void characters(char[] ch, int start, int length)
throws SAXException
{
currentValue = new String(ch, start, length);
}
public void endElement(String name) throws SAXException
{
if (currentElement.equals(name))
table.put(currentElement, currentValue);
}
}
JSP 内容显示源码,SaxXml.jsp:
<HTML>
<HEAD>
<TITLE>剖析XML 文件people.xml</TITLE>
</HEAD>
<BODY>
<%@ page errorPage=ErrPage.jsp
contentType=text/html;charset=GB2312 %>
<%@ page import=java.io.* %>
<%@ page import=java.util.Hashtable %>
<%@ page import=org.w3c.dom.* %>
<%@ page import=org.xml.sax.* %>
<%@ page import=javax.xml.parsers.SAXParserFactory %>
<%@ page import=javax.xml.parsers.SAXParser %>
<%@ page import=SAXHandler %>
<%
File file = new File(c:people.xml);
FileReader reader = new FileReader(file);
Parser parser;
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
SAXHandler handler = new SAXHandler();
sp.parse(new InputSource(reader), handler);
Hashtable hashTable = handler.getTable();
out.println(<TABLE BORDER=2$amp;>amp;$lt;CAPTION>教师信息表</CAPTION>);
out.println(<TR$amp;>amp;$lt;TD>姓名</TD> + <TD> +
(String)hashTable.get(new String(name)) + </TD$amp;>amp;$lt;/TR>);
out.println(<TR$amp;>amp;$lt;TD>学院</TD> + <TD> +
(String)hashTable.get(new String(college))+</TD$amp;>amp;$lt;/TR>);
out.println(<TR$amp;>amp;$lt;TD>电话</TD> + <TD> +
(String)hashTable.get(new String(telephone)) + </TD$amp;>amp;$lt;/TR>);
out.println(<TR$amp;>amp;$lt;TD>备注</TD> + <TD> +
(String)hashTable.get(new String(notes)) + </TD$amp;>amp;$lt;/TR>);
out.println(</TABLE>);
%>
</BODY>
</HTML>