java项目中，每新建一次会话，访问量加1

最新推荐文章于 2024-07-31 14:43:54 发布

iteye_3728

最新推荐文章于 2024-07-31 14:43:54 发布

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分类专栏： SSH 文章标签： java web.xml

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本文介绍了一种利用自定义监听器实现网站访问统计的方法。通过在web.xml配置监听器并结合Spring框架注入统计数据服务，每当创建新的HTTP会话时，系统将自动更新访问计数并保存到数据库。

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1.在web.xml文件加入如下段代码，其中AccessCountListener.java是自己定义的监听器
<listener>
<listener-class>com.cfets.imix.util.AccessCountListener</listener-class>
</listener>

3.在applicationContext-ioc.xml文件中添加如下段代码

2.每新建一次会话，访问量加1 【注：要实现HttpSessionListener接口】
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

import com.cfets.imix.pojo.StatisticsData;
import com.cfets.imix.service.StatisticsDataService;

public class AccessCountListener implements HttpSessionListener{
final Logger log = LoggerFactory.getLogger("AccessCountListener");
private static int count;
private StatisticsDataService statisticsDataService;
private ApplicationContext appContext = null;

public AccessCountListener(){
count = 0;
}
//每新建一次会话，就会调用一次此方法
public void sessionCreated(HttpSessionEvent se) {
count = count + 1;

    //如果配置文件没有加载，则重新获取
    if(appContext == null){
              HttpSession session = se.getSession();
             ServletContext servletCxt = session.getServletContext();
             appContext = WebApplicationContextUtils.getWebApplicationContext(servletCxt);
    }
    accessCount(appContext);
}

//session被销毁时调用，在此不做任何操作
public void sessionDestroyed(HttpSessionEvent arg0) {
}

public void accessCount(ApplicationContext appContext){
try{

//获取配置文件中id为accessCountListener的bean
AccessCountListener acl =

                  (AccessCountListener) appContext.getBean("accessCountListener");
   StatisticsDataService statisticsDataService = acl.getStatisticsDataService();

   Date date = new Date();
   SimpleDateFormat sdf1 = new SimpleDateFormat("yyyy-MM-dd");
   String todayDate = sdf1.format(date);

   int queryResult = statisticsDataService.queryByDateAndName(todayDate, "访问量");
   if(queryResult == 0){
             StatisticsData sd = new StatisticsData();
             sd.setDate(todayDate);
             sd.setName("访问量");
             sd.setCount(1);
            statisticsDataService.saveStatisticsData(sd);
   }else if(queryResult == 1){
           int countByCon = statisticsDataService.queryCountByDateAndName(todayDate, "访问量");
           statisticsDataService.updateStatisticsData(todayDate, "访问量", countByCon+1);
            statisticsDataService.queryCountByDateAndName(todayDate, "访问量");
   }

}catch(Exception e){
log.error("统计访问量数据出错!", e);
}

}

public StatisticsDataService getStatisticsDataService() {
  return statisticsDataService;
}
public void setStatisticsDataService(StatisticsDataService statisticsDataService) {
  this.statisticsDataService = statisticsDataService;
}
public static int getCount() {
  return count;
}
public static void setCount(int count) {
  AccessCountListener.count = count;
}
}