Java与XML（三）web上的读写应用

2008-02-23 10:12:32来源：互联网阅读 ()

利用（二）中我写的两个函数（放在package src中），这次实现Web页面的操作。
index.html:
<%@ page language="Java" pageEncoding="GB2312"%>
<body>
<p> </p>
<p> </p>
<p> </p>
<table width="60%" border="1" align="center">
<tr>
<td>
<p align="left"><font size="4" color="#003399">管理测试程序</font></p>

<form name="readform" method=post action="load.JSP">
<p align="left"><font color="#FF0000">读取XML文件： </font></p>
<p align="left"> <font color="#FF0000">
<input type="text" name="mypath" size="50" value="c:\\Eclipse\\workspace\\myxml\\xmldata\\1.xml">
</font></p>
<p align="left">
<a href="#" onClick=submit()>读取</a>
</p>
<p align="left"> </p>
</form>

<form name="writeform" method=post action="create.jsp">
<p align="left"><font color="#FF0000">写入xml文件：</font> </p>
<p align="left">请填写路径:
<input type="text" name="mypath" width="100" size="50"
value="c:\\eclipse\\workspace\\myxml\\xmldata\\11.xml">
</p>
<p align="left">请填写题目:
<input type="text" name="mytitle" width="100" size="50">
</p>

<p align="left">请填写内容:
<textarea name="mycontent" cols="100"></textarea>
</p>
<p align="left">
<a href="#" onClick=submit()>写入</a>
</p>
</form>
</td>
</tr>
</table>
</body>

写入的页面create.jsp：
<%@ page language="java" pageEncoding="GB2312"%>
<%@ page import="src.*" %>
<%@ page import="org.w3c.dom.*"%>
<%@ page import="javax.xml.parsers.*"%>
<%@ page import="javax.xml.transform.*"%>
<%@ page import="javax.xml.transform.dom.DOMSource"%>
<%@ page import="javax.xml.transform.stream.StreamResult"%>
<%@ page import="java.io.*"%>
<html>
<body>
<%
String mypath=(String)request.getParameter("mypath");
String mytitle=(String)request.getParameter("mytitle");
String mycontent=(String)request.getParameter("mycontent");

mypath=new String(mypath.getBytes("ISO-8859-1"),"GB2312");
mytitle=new String(mytitle.getBytes("ISO-8859-1"),"GB2312");
mycontent=new String(mycontent.getBytes("ISO-8859-1"),"GB2312");
try{
writexml myxml=new writexml(mypath);
myxml.toWrite(mytitle,mycontent);
myxml.toSave();
out.print("Your writing is successful.");
}
catch(ParserConfigurationException exp){
exp.printStackTrace();
out.print("Your writing is failed.");
}
%>
</body>
</html>

读取xml的页面load.jsp：
<%@ page language="java" pageEncoding="GB2312"%>
<%@ page import="src.*" %>
<%@ page import="java.io.*" %>
<%@ page import="java.util.Vector" %>
<%@ page import="javax.xml.parsers.*" %>
<%@ page import="org.w3c.dom.*" %>
<html>
<body>
<%
Vector A=new Vector();
String mypath=(String)request.getParameter("mypath");
out.println(mypath);%>
<p>
<%
readxml my = new readxml();
A = my.toRead(mypath);
for (int i = 0; i < A.size(); i ) {
out.println(A.elementAt(i));
%>
<p>
<%
}
%>
</body>
</html>
这个写程序还有一个缺陷，它只是创建xml格式和内容，而不是改写已有文件。
如果您写出了改写文件的程序望能交流。