jsp作为服务端，ajax请求回应

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刚学ajax，想以jsp作为服务端，来回应ajax的请求：

代码如下：

<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<script src="../js/jquery.min.js" ></script>
<script type="text/javascript">
$(document).ready(function () {
$("#btn").on("click", function () {
$.ajax({
url:"http://localhost:8080/StrutsExercise/server.jsp",
data:{name:$("#tid").val()},
type:"get",
datatype:"html",
success:function(data){
$("#pid").text(data);
}
});
});
});
</script>
</head>
<body>
<input type="text" id="tid"/>
<button id="btn">send</button>
<p id="pid">result</p>
</body>
</html>

server.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<% String name = request.getParameter("name");
if(name.equals("admin")){
response.getWriter().println("login:"+name);
}else{
response.getWriter().println("login:error");
}
%>