web统计访问次数（servlet listener

来源：互联网发布：淘宝店铺代理运营编辑：程序博客网时间：2024/05/09 08:40

这里用servlet的listener来统计网站访问次数
1、配置web.xml:
<listener>
<listener-class>web_all.listener</listener-class>
</listener>
<listener>
<listener-class>web_all.listener_c</listener-class>
</listener>
2、listener统计网页
package web_all;

import javax.servlet.ServletRequestEvent;
import javax.servlet.ServletRequestListener;

public class listener_c implements ServletRequestListener {
private static int count=0;
@Override
public void requestDestroyed(ServletRequestEvent sre) {
}

@Override
public void requestInitialized(ServletRequestEvent sre) {
count++;
}

public static int getCount() {
return count;
}
}
3、servlet 取得count值
public class servlet extends HttpServlet {

protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
try (PrintWriter out = response.getWriter()) {

out.println("<!DOCTYPE html>");
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet servlet</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Servlet servlet at " + request.getContextPath() + "</h1>");

out.print("request counts :"+web_all.listener_c.getCount());
//
out.println("</body>");
out.println("</html>");
}
}

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}

@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}

}

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