JSP 開發(fā)之Servlet解決網(wǎng)頁(yè)緩存問題
（1）我們?yōu)槭裁匆乐褂斡[器頁(yè)面緩存的問題：
所以在不需要緩存的頁(yè)面中需要實(shí)現(xiàn)不緩存頁(yè)面；
代碼如下：
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");
//指定該頁(yè)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);
}
}
（2）但是如果要實(shí)現(xiàn)特定時(shí)間內(nèi)的頁(yè)面緩存 則代碼如下：
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");
//指定該頁(yè)面不緩存
//response.setDateHeader("Expires",-1); //IE游覽器支持的
//緩存一定的時(shí)間 緩存 一天的時(shí)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);
}
}
以上就是Servlet解決網(wǎng)頁(yè)緩存的實(shí)例詳解，如有疑問請(qǐng)留言或者到本站社區(qū)交流討論，感謝閱讀，希望能幫助到大家，謝謝大家對(duì)本站的支持！
您可能感興趣的文章:- Java，JSP，Servlet獲取當(dāng)前工程路徑（絕對(duì)路徑）問題解析
- JSP 開發(fā)之THE SERVLET NAME ALREADY EXISTS.解決方法
- JSP中通過(guò)Servlet 將服務(wù)器硬盤圖片并展示到瀏覽器
- Jsp+Servlet實(shí)現(xiàn)購(gòu)物車功能
- 淺談Servlet轉(zhuǎn)發(fā)到JSP頁(yè)面的路徑問題(必看)
- JSP 開發(fā)之servlet中調(diào)用注入spring管理的dao
- JSP開發(fā)Servlet重寫init（）方法實(shí)例詳解
- JSP 中Servlet的自己實(shí)現(xiàn)
