📄 write.jsp

📁 J2EE独立开发制作

💻 JSP

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<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>无标题文档</title>
</head>

<body>
<%! 
public int[] getNumber(String s) 
{ 
int[] mCount = new int[4]; 
String strTemp = null; 
int i; 
java.io.RandomAccessFile rf = null; 
try { 
rf = new java.io.RandomAccessFile(s,"r"); 
} catch(Exception e) 
{ 
System.out.println(e); 
System.exit(0); 
} 
for(i=0;i<4;i++)  
{ 
try { 
strTemp = rf.readLine(); 
} catch(Exception e) { 
strTemp = "0"; 
} 
if(strTemp==null)strTemp = "0"; 
//mCount[i] = new Integer(strTemp).intValue();
mCount[i]=Integer.parseInt(strTemp);
} 
return mCount; 
} 
 
 
 
public void setNumber(String s,int[] x) 
{ 
try { 
java.io.PrintWriter pw = new java.io.PrintWriter(new java.io.FileOutputStream(s)); 
for (int i=0;i<4;i++){ 
pw.println(x[i]+""); 
} 
pw.close(); 
} catch(Exception e) { 
System.out.println("Write file error:"+e.getMessage()); 
} 
} 
%> 
 
 
 
 
<% 
String tmp = null; 
int choice = -1; 
int[] count = new int[4]; 
tmp = request.getParameter("choice"); 
if (tmp==null){ 
} else { 
choice = new Integer(tmp).intValue(); 
} 
///////////// 
String s = request.getRealPath("/count.txt"); 
if(choice>=0){ 
count = getNumber(s); 
count[choice]++; 
setNumber(s,count); 
} 
 
 
 
response.sendRedirect("index.jsp"); 
%> 

</body>
</html>

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