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Servlet实现用户请求次数的统计

2015-08-01 14:18 435 查看

利用会话机制统计用户访问服务器端的次数，每一次访问的时候，就将统计的数字+1，并保存在会话中。

/*************************
              @Dream_EarFire
 ************************/
package com.dream.javaweb;

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 AccessServlet extends HttpServlet{
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	public void  doGet(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException{
		this.doPost(request,response);
	}
	public void doPost(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException{
		response.setContentType("text/html;charset=utf-8");
		int count=0;
		if(request.getSession().getAttribute("count")!=null){
			count=(Integer)request.getSession().getAttribute("count");
		}
		count++;
		request.getSession().setAttribute("count", count);
		PrintWriter out=response.getWriter();
		out.println("<html>");
		out.println("<head><title>A Servlet</title><body>");
		out.println("This is the "+count+" time to access!");
		out.println("</body>");
		out.println("</html>");
		out.flush();
		out.close();
	}
}

web.xml的配置

<servlet>
  <servlet-name>AccessServlet</servlet-name>
  <servlet-class>com.dream.javaweb.AccessServlet</servlet-class>
  </servlet>
  <servlet-mapping>
  <servlet-name>AccessServlet</servlet-name>
  <url-pattern>/AccessServlet</url-pattern>
  </servlet-mapping>

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