JQuyer $.post 与 $.ajax 访问WCF ajax service 时的问题

$.post('<%=this.AppPath %>DataService/InventoryUIService.svc/Rename', ///location.protocol + "//" + location.host + location.pathname + "/Rename",
                               odata,
                                 function (result) {
                                     $dialogProcessing.dialog("close");
                                     if (result.Success) {
                                         alert("Success");
                                     }
                                     else {
                                         var msg = "Your submit fauiler, Detail message is:" + result.ErrorMessage;
                                         window.alert(msg);
                                     }
                                 },
                               "json");
               $.ajax({
                   url: '<%=this.AppPath %>DataService/InventoryUIService.svc/Rename',
                   type: 'POST',
                   contentType: 'application/json',
                   dataType: 'json',
                   data: odata,
                   success: function (result) {
                       if (result.Success) {
                           alert("Success");
                       }
                       else {
                           var msg = "Your submit fauiler, Detail message is:" + result.ErrorMessage;
                           window.alert(msg);
                       }
                   },
                   error: function (jqXHR, textStatus, errorThrown) {
                       var msg = "Your submit throw a error, \r\nError message is:" + $(jqXHR.responseText).text();
                       window.alert(msg);
                   }
               });

TCP Trace截图

$.post:

$.ajax:

感觉$.post是用来提交forms的，而要跟wcf ajax service访问，还必须得用$.ajax来指定Content-Type.

后来找到的资料: http://stackoverflow.com/questions/2845459/jquery-how-to-make-post-use-contenttype-application-json