java web中页面加载时执行函数的问题

java web中页面加载时执行函数的问题

JSP:
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>




JAVA:
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


public class myServlet extends HttpServlet {
private static final long serialVersionUID = 1L;


public myServlet() {
super();
// TODO Auto-generated constructor stub
}


protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
this.doPost(request, response);
}


protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String local = request.getParameter("locationName");
if("".equals("close")){
//关闭网页时你调用的数据库代码
}else{
//进入网页时你调用的数据库代码
}
}

}
WEB.XML加入


myServlet
myServlet
com.my.test.myServlet


myServlet
/myServlet


当然，如果是网页强制关闭（就是点上方的X）
你需要判断下了，

用DWR或者先刷新一次页面，把要得到的数据隐藏起来！之后再用JQ进行判断！

JS回调代码，AJ