监听器实现页面点击率

[chaicsd14]

有index.jsp 和1.jsp 两个JSP

我想用监听器统计1.jsp的统计量 但是不能用HttpSessionListener

请问下我这个监听器要怎么写啊?

[海会圣贤]

mark

[秋9]

使用单态模式可以做到,比如:

class Singleton
{
  private int num=0;
  private static Singleton instance = new Singleton();

  private Singleton()
  {
  }

  public static Singleton getInstance()
  {
    return instance;
  }
  public static add(){
num++;
}
public static getNum(){
return num;
}
}

[chaicsd14]

我要用监听器来实现啊

[sw19810913]

[code=Java]
//点击率，页面访问量统计，已应用在我的项目中
1、先创建CountFileHandler类
package com.count;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;

public class CountFileHandler {

public static void writerFile(String filename,long count){
try {
PrintWriter out = new PrintWriter(new FileWriter(filename));
out.println(count);
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}

public static long readFile(String filename){
File f = new File(filename);
long count = 0;
if (!f.exists()) {
writerFile(filename, 0);
}
try {
BufferedReader in = new BufferedReader(new FileReader(f));
count = Long.parseLong(in.readLine());
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (NumberFormatException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
count = 0;
}
return count;
}

public static String tranform(long count){ //123 "
String countNumber = ""+count;
String newString = "";
for(int i = 0 ; i<countNumber.length();i++){
newString = newString + "<img src='images\\"+countNumber.charAt(i)+".gif'>";
}
return newString;
}

}


2、在web.xml中配置
<!-- 统计在线人数 监听器-->
<listener>
<listener-class>com.listener.CountListener</listener-class>
</listener>

3、在jsp页面中显示,会在tomcat\webapps\项目名 目录下创建一个count.txt文件记录访问次数
<%
long count = CountFileHandler.readFile(request.getRealPath("/")+"count.txt");
if(session.getAttribute("visited") == null){
session.setAttribute("visited","y");
session.setMaxInactiveInterval(2);//设置失效时间，防止连续刷新
System.out.println("count:_"+count);
count = count + 1;
CountFileHandler.writerFile(request.getRealPath("/")+"count.txt",count);
//out.print(CountFileHandler.tranform(count));
}

%>
访问量：<%=CountFileHandler.tranform(count) %>

/code]