JSP 开发之Servlet解决网页缓存问题
（1）我们为什么要防止游览器页面缓存的问题：
所以在不需要缓存的页面中需要实现不缓存页面；
代码如下：
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); } }
（2）但是如果要实现特定时间内的页面缓存 则代码如下：
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); } }
以上就是Servlet解决网页缓存的实例详解，如有疑问请留言或者到本站社区交流讨论，感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！
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