Struts2 and Jqurey Ajax in conjunction with cross domain requests

Ajax

		$.ajax ({
			URL: "Https://www-xxx.com/xxx/getCounselorDetailByHxCode",
			data: {xxx:x},
			dataType: ' Jsonp ',
			JSONP: "Callback", 
			type: ' Post ',
			
			error:function (data) { 
				console.log (data);
			},
			success: function (data) {
			//	alert ("suc");
				Console.log (data);

			},
		});

Where datatype specifies that JSONP,JSONP be specified as callback (optional), and then look at the configuration of struts2:

		<action name= "Getcounselordetailbyhxcode"
			class= "xxx" method= "Getcounselordetailbyhxcode" >
			< Result name= "Success" type= "JSON" >
				<param name= "Callbackparameter" >callback</param>
				< param name= "NoCache" >true</param>
			</result>
		</action>

Among them, this article

<param name= "Callbackparameter" >callback</param>

Callback is the same as the Jsonp field setting in Ajax

The printed data is the member object that all the structs of the request class instance can get:

Hxcodelist:null
Hxtype:null
Content:null
Counselordetail: "Success"
Counselordetailbyhxcode: "Success"
Spresult:object
Typetypestr:null
Urlstr:null
Userhxcode: "zeKNVeDc208"
Userhxsubcode:null
Userinfoid:null
__PROTO__: Object

JS,

data = Data.spresult;
Con = = ' <br>

To access the results

201611.1 Supplements:

Jsonp a cross-domain can only be a string, so struts should specify a string variable when returning

			<result name= "Success" type= "JSON" >
				<param name= "root" >jsonpResult</param>
				<param Name= "Callbackparameter" >URGOO_CALLBACK</param>
				<param name= "NoCache" >true</param>
			</result>

Where Jsonpresult is the String type

	Public String Actionmethod () throws Exception {
		Spresult = Servicemethod ();
		Jsonpresult = Jsonutils.convert (spresult);
		return SUCCESS;
	}

In addition, there is a way to specify a cross-domain:

In the Actionmethod,

		HttpServletResponse response = Servletactioncontext.getresponse ();
		Response.setheader ("Access-control-allow-origin", "*");

The front-end code at this point doesn't have to change at all.