本文实例为大家分享了Servlet实现统计页面访问次数的具体代码，供大家参考，具体内容如下
实现思路：
1.新建一个CallServlet类继承HttpServlet，重写doGet（）和doPost（）方法；
2.在doPost方法中调用doGet（）方法，在doGet()方法中实现统计网站被访问次数的功能，用户每请求一次servlet，使得访问次数times加1；
3.获取ServletContext，通过它的功能记住上一次访问后的次数。
在web.xml中进行路由配置：
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<!-- 页面访问次数 --> <servlet> <servlet-name>call</servlet-name> //CallServlet为处理前后端交互的后端类 <servlet-class>CallServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>call</servlet-name> <url-pattern>/call</url-pattern></servlet-mapping> |
CallServlet类：
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import javax.servlet.ServletContext;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.IOException;import java.io.PrintWriter;/** * Created with IntelliJ IDEA * Details about unstoppable_t: * User: Administrator * Date: 2021-04-07 * Time: 14:57 *///获得网站被访问的次数public class CallServlet extends HttpServlet { private static final long serialVersionUID = 1L; @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { resp.setContentType("text/html;charset=utf-8"); ServletContext context = getServletContext(); Integer times = (Integer) context.getAttribute("times"); if (times == null) { times = new Integer(1); } else { times = new Integer(times.intValue() + 1); } PrintWriter out= resp.getWriter(); out.println("<html><head><title>"); out.println("页面访问统计"); out.println("</title></head><body>"); out.println("当前页面被访问了"); out.println("<font color=red size=20>"+times+"</font>次"); context.setAttribute("times",times); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { this.doGet(req,resp); }} |
前端展示结果：
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/weixin_44874269/article/details/115487251
