jquery ajax jsonp跨域调用实例代码
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2022-05-10 08:29:38
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客户端代码
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApp.WebForm1" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <script src="jquery-1.7.1.min.js" type="text/javascript"></script> <script type="text/javascript"> function aa() { $.ajax({ url: "http://localhost:12079/WebForm2.aspx", data: "p1=1&p2=2&callback=?", type: "post", processData: false, timeout: 15000, dataType: "jsonp", // not "json" we'll parse jsonp: "jsonpcallback", success: function(result) { alert(result.value1); } }); } </script> <title></title> </head> <body> <form id="form1" runat="server"> <div> </div> </form> <p> <input id="Button1" type="button" value="button" onclick="aa()" /></p> </body> </html>
服务器端代码
public partial class WebForm2 : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { string callback = Request["callback"]; string v1="1"; string v2="2"; string response = "{\"value1\":\"" + v1 + "\",\"value2\":\"" + v2 + "\"}"; string call = callback + "(" + response + ")"; Response.Write(call); Response.End(); } }
客户端页面和服务器端页面在两个项目中,以便进行跨域调用测试。
跨域实例代码(需要加载jquery,页面为utf-8编码):
<!--拉勾招聘数据--> <script type="text/javascript"> function success_jsonpCallback(data){ var html = ''; var pos = ''; html += '<ul>'; jQuery.each(data, function(k, v) { if(k<10){ pos = '【' + v.city+ '】' + v.positionName + '('+ v.salary +') - '+v.companyName; if(pos.length > 20){ pos = pos.substring(0,19)+'...'; } html += '<li><a href="'+v.posiitonDetailUrl+'" target="_blank" title="【' + v.city+ '】' + v.positionName + '('+ v.salary +') - '+v.companyName+'">'+pos+'</a></li>'; } }); html += '</ul><div class="more-link"><a href="http://www.lagou.com/jobs/list_%E5%89%8D%E7%AB%AF%E5%BC%80%E5%8F%91" target="_blank">更多</a></div>'; jQuery('#lagouData').html(html); } function getLagouData() { jQuery.ajax({ async:false, url: "http://www.lagou.com/join/listW3cplus?kd=%E5%89%8D%E7%AB%AF%E5%BC%80%E5%8F%91", type: "GET", dataType: "jsonp", jsonpCallback: 'success_jsonpCallback', contentType: "application/jsonp; charset=utf-8", success: function(data) { success_jsonpCallback(data); } }); } getLagouData(); </script> <div id="lagouData"></div>
jsonp代码:
success_jsonpCallback([{"city":"广州","companyName":"POCO.CN","createTime":"15:02发布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/16868.html","positionAdvantage":"身处凝聚力团队,老城区上班交通便利,双休","positionName":"商业前端开发工程师","salary":"4k-7k"},{"city":"北京","companyName":"美通云动(北京)科技有限公司","createTime":"14:47发布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/16866.html","positionAdvantage":"Html5技术最棒的团队","positionName":"Web前端开发","salary":"4k-8k"},{"city":"杭州","companyName":"口袋购物","createTime":"14:42发布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/13024.html","positionAdvantage":"广阔的发展平台、自我价值体现的地方","positionName":"web前端开发工程师","salary":"8k-12k"},{"city":"北京","companyName":"布丁移动","createTime":"14:02发布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/1498.html","positionAdvantage":"三餐、周围美女如云","positionName":"Android开发工程师","salary":"10k-20k"},{"city":"北京","companyName":"布丁移动","createTime":"14:02发布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/2539.html","positionAdvantage":"三餐,小桥流水人家,美女","positionName":"ios开发工程师","salary":"10k-20k"},{"city":"上海","companyName":"天天动听","createTime":"00:55发布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/11494.html","positionAdvantage":"创业氛围 讲求小而美","positionName":"Android开发工程师","salary":"8k-16k"},{"city":"北京","companyName":"LBE安全大师","createTime":"11:39发布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/5983.html","positionAdvantage":"五险一金 绩效奖金","positionName":"Android开发工程师","salary":"8k以上"},{"city":"北京","companyName":"点心移动","createTime":"11:24发布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/16736.html","positionAdvantage":"技术导向的团队氛围,全方位的福利待遇","positionName":"Android","salary":"15k-25k"},{"city":"广州","companyName":"荔枝FM","createTime":"10:44发布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/16634.html","positionAdvantage":"连坚持跑步、保持体重都有奖励哦!","positionName":"WP手机开发工程师","salary":"16k-25k"},{"city":"北京","companyName":"网银-京东子公司","createTime":"10:08发布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/14162.html","positionAdvantage":"负责京东商城-互联网金融产品 JS开发","positionName":"Javascript 前端开发工程师","salary":"10k-20k"}])
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