今天研究了AJAX使用JSONP進行跨域調用的方法，發現使用GET方式和POST方式都可以進行跨域調用,這裡簡單分享下，方便需要的朋友
客戶端代碼 代碼如下: <%@ 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> 服務器端代碼 代碼如下: 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(); } } 客戶端頁面和服務器端頁面在兩個項目中，以便進行跨域調用測試。 跨域實例代碼（需要加載jquery，頁面為utf-8編碼）： 代碼如下: <!--拉勾招聘數據--> <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代碼： 復制代碼 代碼如下: success_jsonpCallback([{"city":"廣州","companyName":"POCO.CN","createTime":"15:02發布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/16868.html","positionAdvantage":"身處凝聚力團隊，老城區上班交通便利，雙休","positionName":"商業前端開發工程師","salary":"4k-7k"},{"city":"北京","companyName":"美通雲動（北京）科技有限公司","createTime":"14:47發布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/16866.html","positionAdvantage":"Html5技術最棒的團隊","positionName":"Web前端開發","salary":"4k-8k"},{"city":"杭州","companyName":"口袋購物","createTime":"14:42發布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/13024.html","positionAdvantage":"廣闊的發展平台、自我價值體現的地方","positionName":"web前端開發工程師","salary":"8k-12k"},{"city":"北京","companyName":"布丁移動","createTime":"14:02發布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/1498.html","positionAdvantage":"三餐、周圍美女如雲","positionName":"Android開發工程師","salary":"10k-20k"},{"city":"北京","companyName":"布丁移動","createTime":"14:02發布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/2539.html","positionAdvantage":"三餐，小橋流水人家，美女","positionName":"ios開發工程師","salary":"10k-20k"},{"city":"上海","companyName":"天天動聽","createTime":"00:55發布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/11494.html","positionAdvantage":"創業氛圍 講求小而美","positionName":"Android開發工程師","salary":"8k-16k"},{"city":"北京","companyName":"LBE安全大師","createTime":"11:39發布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/5983.html","positionAdvantage":"五險一金 績效獎金","positionName":"Android開發工程師","salary":"8k以上"},{"city":"北京","companyName":"點心移動","createTime":"11:24發布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/16736.html","positionAdvantage":"技術導向的團隊氛圍，全方位的福利待遇","positionName":"Android","salary":"15k-25k"},{"city":"廣州","companyName":"荔枝FM","createTime":"10:44發布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/16634.html","positionAdvantage":"連堅持跑步、保持體重都有獎勵哦！","positionName":"WP手機開發工程師","salary":"16k-25k"},{"city":"北京","companyName":"網銀-京東子公司","createTime":"10:08發布","posiitonDetailUrl":"http://www.lagou.com:80/jobs/14162.html","positionAdvantage":"負責京東商城-互聯網金融產品 JS開發","positionName":"Javascript 前端開發工程師","salary":"10k-20k"}])