基于servlet实现统计网页访问次数
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2022-01-03 10:00:45
本文实例为大家分享了基于servlet实现统计网页访问次数的具体代码，供大家参考，具体内容如下一、基础知识（1）servletcontext和servletconfig的区别servletcontex...
本文实例为大家分享了基于servlet实现统计网页访问次数的具体代码，供大家参考，具体内容如下
一、基础知识
（1）servletcontext和servletconfig的区别
servletcontext作为整个web应用的共享数据
servletconfig只是作为当前servlet的数据共享，下一个servlet访问时，是访问不到的
二、代码实现
将显示的统计次数显示在html页面上：
import java.io.ioexception;
import java.io.printwriter;
import javax.servlet.servletcontext;
import javax.servlet.servletexception;
import javax.servlet.annotation.webservlet;
import javax.servlet.http.httpservlet;
import javax.servlet.http.httpservletrequest;
import javax.servlet.http.httpservletresponse;
/**
* servlet implementation class countservlet1
*/
@webservlet("/countservlet1")
public class countservlet1 extends httpservlet {
private static final long serialversionuid = 1l;
/**
* @see httpservlet#httpservlet()
*/
public countservlet1() {
super();
// todo auto-generated constructor stub
}
/**
* @see httpservlet#doget(httpservletrequest request, httpservletresponse response)
*/
protected void doget(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception {
//设置字符编码
request.setcharacterencoding("utf-8");
response.setcharacterencoding("utf-8");
response.setcontenttype("text/html; charset=utf-8");
//获取全局的共享数据
servletcontext servletcontext = this.getservletcontext();
//获取计数器count
integer count = (integer) servletcontext.getattribute("count");
//如果获取的计算器对象为空 ，说明是第一次访问，并将count，放入servletcount
if( servletcontext.getattribute("count") == null) {
count = 1;
servletcontext.setattribute("count", count);
}else {
//否则就不是第一次访问，将登陆的计数器进行加1的数据更新
servletcontext.setattribute("count", count+1);
}
//将登陆的次数显示在页面上
printwriter out =response.getwriter();
out.print("<!doctype html>\r\n" +
"<html>\r\n" +
"<head>\r\n" +
"<meta charset=\"utf-8\">\r\n" +
"<title>登陆网页次数统计</title>\r\n" +
"</head>\r\n" +
"<body>");
out.print("<h1>");
out.print("您是第 "+ servletcontext.getattribute("count")+"位访客");
out.print("<h1>");
out.print("</body>\r\n" +
"</html>
}
/**
* @see httpservlet#dopost(httpservletrequest request, httpservletresponse response)
*/
protected void dopost(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception {
// todo auto-generated method stub
doget(request, response);
}
}三、在不同浏览器显示的次数
（1）在eclipse中显示的次数
（2）在火狐中显示的次数
（3）在360中显示的次数
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。
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