1.JSP頁：

Document?? : index

Created on : 2009-10-10, 14:47:46

Author???? : lucifer

--%>

/p>

"http://www.w3.org/TR/html4/loose.dtd">

JSP Page

Welcome!!

You're the

String url = "C:\\Users\\lucifer\\Desktop\\count.txt";

//改成自己的text文件，用來計數

count.setPath(url);

count.setCount();

out.println(count.getCount());

%>

Visitor!!!

2.Bean:

package MyBean;

import java.io.*;

/**

*

* @author lucifer

*/

public class Counter {

private String url;

private String count;

public void setPath(String url){

this.url = url;

}

public String getCount(){

try{

BufferedReader br;

br = new BufferedReader(new FileReader(url));

count = br.readLine();

br.close();

return count;

}

catch(IOException e){

e.printStackTrace();

return "No Record!";

}

}

public void setCount(){

try{

BufferedReader br = new BufferedReader(new FileReader(url));

count = new String(br.readLine());

int num;

if(count == null)

num = 1;

else

num = Integer.parseInt(count) + 1;

try{

PrintWriter pw = new PrintWriter(new FileOutputStream(url));

pw.println(num);

pw.close();

}

catch(IOException e){

System.out.println(e.getMessage());

}

br.close();

}

catch(IOException e){

e.printStackTrace();

}

}

}

總結

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