Java Servlet generates JSON format data and displays it with jQuery,
This example describes how to use jQuery to display data in JSON format generated by Java Servlet. We will share this with you for your reference. The details are as follows:
1. Servlet uses json-lib to generate data in JSON format
import java.io.IOException;import java.io.PrintWriter;import java.util.*;import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import json.Person;import net.sf.json.JSONArray;import net.sf.json.JSONObject;@WebServlet("/JSONServlet")public class JSONServlet extends HttpServlet {public JSONServlet() {super();}public void destroy() {super.destroy(); // Just puts "destroy" string in log// Put your code here}public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {response.setContentType("application/x-json");response.setCharacterEncoding("GBK");PrintWriter out = response.getWriter();ArrayList<Person> items=new ArrayList<Person>();items.add(new Person(2,"jack"));items.add(new Person(2,"bob"));items.add(new Person(2,"alex"));JSONArray jsonArray=new JSONArray();jsonArray.addAll(items);out.print(jsonArray.toString());}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doGet(request,response);}public void init() throws ServletException {// Put your code here}}
2. Front-end Page code
<% @ Page language = "java" contentType = "text/html; charset = ISO-8859-1" pageEncoding = "ISO-8859-1" %> <! DOCTYPE html PUBLIC "-// W3C // dtd html 4.01 Transitional // EN "" http://www.w3.org/TR/html4/loose.dtd "> <Html>JQuery can also use. getJSON to obtain asynchronous data.
<Script type = "text/javascript"> $ (document ). ready (function () {$ ("# kick "). click (function () {$. getJSON ("JSONServlet", function (returnData) {var arr = eval (returnData); $ ("# result" ..html (""); // clear info content $. each (arr, function (index, content) {$ ("# result "). append ("<div>" + content. legs + "</div>" + "<div>" + content. name + "</div>I hope this article will help you with JSP program design.
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