write.jsp
来自「J2EE独立开发制作」· JSP 代码 · 共 81 行
JSP
81 行
<%@ 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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