【环境说明】

1、sencha touch : 2.3.1

2、play : 2.2.0

3、chrome

【代码示例】

1、sencha touch

 Ext.Ajax.request({
        url:'http://10.228.190.97:9000/login'+"/"+userName+"/"+password,useDefaultXhrHeader : false,success: function(result,request) {
            var respText =  Ext.JSON.decode(result.responseText); 
            alert(respText.email);
        }
    });

2.1、play --UserController.java

@With(CorsAction.class)
public class UserController extends Controller{
   @Transactional
   public static Result login(String _dc,String username,String userpwd) {
     Contact contact = Contact.login(username,userpwd);
     return ok(parser(contact));
   }
}

public class CorsAction extends Action.Simple {
    public Promise<SimpleResult> call(Context context) throws Throwable{
        Response response = context.response();
        response.setHeader("Access-Control-Allow-Origin","*");
        response.setHeader("Access-Control-Allow-Headers","X-Requested-With");
        return delegate.call(context);
    }
}

【截图演示】