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Ajax在JQuery中的应用（get方法练习1）

2016-11-13 13:13 501 查看

index.html

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>test get()</title>
<script type="text/javascript" src="script/jquery-3.1.1.js"></script>
<script type="text/javascript">
$(function() {
$("input:eq(2)").click(function(){
$.get("GetServlet",
{'username':encodeURI(encodeURI($("#username").val())),
'password':encodeURI(encodeURI($("#password").val()))
},function(data,textStatus){
$("#content").html(data);
alert(textStatus);
});
});
});
</script>
</head>
<body>
<input type="text" name="username" id="username"/><br/>
<input type="password" name="password" id="password"/><br/>
<input type="button" value="登陆"/>
<div id="content"></div>
</body>
</html>

GetServlet.java
package com.login;

import java.io.IOException;
import java.io.PrintWriter;
import java.net.URLDecoder;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/GetServlet")
public class GetServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public GetServlet() {
super();
// TODO Auto-generated constructor stub
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
response.setContentType("text/html;charset=utf-8");
response.setCharacterEncoding("utf-8");
PrintWriter out=response.getWriter();
request.setCharacterEncoding("utf-8");
String username=URLDecoder.decode(URLDecoder.decode(request.getParameter("username"), "UTF-8"),"utf-8");//两次解码
String password=URLDecoder.decode(URLDecoder.decode(request.getParameter("password"), "UTF-8"),"utf-8");
if(username.equals("海哥")&&password.equals("haige")){
out.println("<p>欢迎"+username+"光临</p>");
}
else{
out.println("<p>用户名或密码错误！");
}
out.close();
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}

}

截图：

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