Java Servlet生成JSON格式数据并用jQuery显示的方法
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2024-02-06 19:38:22
本文实例讲述了java servlet生成json格式数据并用jquery显示的方法。分享给大家供大家参考,具体如下:
1、servlet通过json-lib生成json...
本文实例讲述了java servlet生成json格式数据并用jquery显示的方法。分享给大家供大家参考,具体如下:
1、servlet通过json-lib生成json格式的数据
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、前端页面代码
<%@ 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> <head> <meta http-equiv="content-type" content="text/html; charset=iso-8859-1"> <title>insert title here</title> <script type="text/javascript" src="js/jquery-1.10.2.min.js"></script> <script type="text/javascript"> $(document).ready( function() { $("#kick").click( function() { $.ajax({ type : "post",//post方法 url : "jsonservlet", data : { "legs" : "2", "name" : "aa" }, //ajax成功的回调函数 success : function(returndata) { var arr = eval(returndata); $.each(arr, function(index, content) { $("#result").append( "<div>" + content.legs + "</div>" + "<div>" + content.name + "</div><hr/>"); }); } }); }); }); </script> </head> <body> <input type="button" id="kick" value="kick"> <div id="result"></div> </body> </html>
jquery也可以用.getjson实现异步数据获取
<script type="text/javascript"> $(document).ready( function() { $("#kick").click(function() { $.getjson("jsonservlet",function(returndata){ var arr = eval(returndata); $("#result").html("");//清空info内容 $.each(arr, function(index, content) { $("#result").append( "<div>" + content.legs + "</div>" + "<div>" + content.name + "</div><hr/>"); }); }); }); }); </script>
希望本文所述对大家jsp程序设计有所帮助。
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