ajax+servlet实例 status总是400

页面js

function getResult(){
var url = "/servlet/StuInfoServlet?action=send";
if(window.XMLHttpRequest){
req = new XMLHttpRequest();
}else if(window.ActiveXObject){
req = new ActiveXObject("Microsoft.XMLHTTP");
}
if(req){
req.open("GET",url, true);
req.onreadystatechange = complete;
req.send(null);
}
}
xml配置

This is the description of my J2EE component
This is the display name of my J2EE component
StuInfoServlet
stuInfo.StuInfoServlet



StuInfoServlet
/servlet/StuInfoServlet

var url = "servlet/StuInfoServlet?action=send";

去掉url前面的斜线

- -这个一般没见过会出现冲突的 ajax作用是在客户端发起请求--->请求到了servlet---->servlet执行服务器端的处理返回处理结果---->ajax回调函数