package com.lc.HttpTest; 
 
import java.io.IOException; 
import java.io.PrintWriter; 
 
import javax.servlet.ServletException; 
import javax.servlet.http.HttpServlet; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
 
public class CacheJiejue extends HttpServlet { 
 
  public void doGet(HttpServletRequest request, HttpServletResponse response) 
      throws ServletException, IOException { 
 
    response.setContentType("text/html;charset=utf-8"); 
    //指定該頁面不緩存 
    response.setDateHeader("Expires",-1); //IE游覽器支持的 
     
    //保證兼容性 
    response.setHeader("Cache-Control", "no-cache"); 
    response.setHeader("Pragme", "no-cache"); 
     
  } 
 
  public void doPost(HttpServletRequest request, HttpServletResponse response) 
      throws ServletException, IOException { 
 
    this.doGet(request, response); 
  } 
 
} 

package com.lc.HttpTest; 
 
import java.io.IOException; 
import java.io.PrintWriter; 
 
import javax.servlet.ServletException; 
import javax.servlet.http.HttpServlet; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
 
public class CacheJiejue extends HttpServlet { 
 
  public void doGet(HttpServletRequest request, HttpServletResponse response) 
      throws ServletException, IOException { 
 
    response.setContentType("text/html;charset=utf-8"); 
    //指定該頁面不緩存 
    //response.setDateHeader("Expires",-1); //IE游覽器支持的 
     
    //緩存一定的時間 緩存 一天的時間 
    response.setDateHeader("Expires",System.currentTimeMillis()+3600*1000*24);  
    //保證兼容性 
    response.setHeader("Cache-Control", "no-cache"); 
    response.setHeader("Pragme", "no-cache"); 
     
  } 
 
  public void doPost(HttpServletRequest request, HttpServletResponse response) 
      throws ServletException, IOException { 
 
    this.doGet(request, response); 
  } 
 
}