[JSP] JSP 开发之Servlet解决网页缓存问题

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"); 
  //指定该页面不缓存 
  response.setDateHeader("Expires",-1); //IE游览器支持的 
   
  //保证兼容性 
  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"); 
  //指定该页面不缓存 
  //response.setDateHeader("Expires",-1); //IE游览器支持的 
   
  //缓存一定的时间 缓存 一天的时间 
  response.setDateHeader("Expires",System.currentTimeMillis()+3600*1000*24);  
  //保证兼容性 
  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); 
  } 
 
}