做博客网站什么空间好,网站开发原创动漫,联通的网站是谁做的,品牌策划设计包括哪些内容JQuery $.ajax() $.ajax({type: POST, //请求方式 一般是get#xff0c;posturl: url , // 这是必需的#xff0c;规定把请求发送到哪个 URLdata: data , //这个是可选。映射或字符串值。规定连同请求发送到服务器的数据。java中用request.getPara…JQuery $.ajax() $.ajax({type: POST, //请求方式 一般是getposturl: url , // 这是必需的规定把请求发送到哪个 URLdata: data , //这个是可选。映射或字符串值。规定连同请求发送到服务器的数据。java中用request.getParameter(key)来接收success: success , //可选。请求成功时执行的回调函数。 successfunction(){}dataType: dataType //可选。规定预期的服务器响应的数据类型。默认执行智能判断xml、json、script 或 html});案例 一个简单的表单验证的案例 % page contentTypetext/html;charsetUTF-8 languagejava % htmlheadtitle$Title$/title/headscript srchttps://cdn.staticfile.org/jquery/1.10.2/jquery.min.js typetext/javascript/scriptstyle#contair{margin-top: 20vh;display: flex;flex-direction: row;justify-content:center ;}/stylebodydiv idcontairdiv用户名input typetext idusername/divdiv密码input typepassword idpassword/divbutton idbutton onclickmyfunction()提交/button/div/body script typetext/javascript function myfunction() {$.ajax({url:http://localhost:8080/ajax_servlet_test_war_exploded/servlet1,dataType:json,type:post,data:{username:$(#username).val(),password:$(#password).val()},success:function (data) {var flagdata.flag;if(flagtrue){alert( 登陆成功);}else{alert(账号或密码错误);}}});} /script /html对应的servlet package com.servlet.test;import net.sf.json.JSONArray; import net.sf.json.JSONException; import net.sf.json.JSONObject;import javax.servlet.*; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.io.PrintWriter; import java.util.ArrayList; import java.util.List;public class ServletTest extends HttpServlet {Overrideprotected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {response.setContentType(application/json;charsetutf-8);request.setCharacterEncoding(utf-8); // JSONArray jsonArraynew JSONArray();// jsonArray.add(0,jsonObject1);String usernamerequest.getParameter(username);String passwordrequest.getParameter(password);PrintWriter outresponse.getWriter();System.out.println(username\npassword);JSONObject jsonObjectnull;if(xiuyuandashen.equals(username) 123456.equals(password)){jsonObject new JSONObject();jsonObject.put(flag,true);}else{jsonObjectnew JSONObject();jsonObject.put(flag,false);}out.print(jsonObject);out.close(); //必须要关闭他我也忘记为啥了 好像是不关闭不会传输}Overrideprotected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {doPost(req,resp);} }效果