這是我的代碼;返回xml而不是json的ASP.NET web服務
$(document).ready(function() {
$('#btnAddCat').click(function() {
var cn = $('#txtCategoryName').val();
alert(cn);
$.ajax({
type: 'Post',
url: "../_ws/news.asmx/InsertCategory",
data: { catName: + cn },
contenttype: 'application/json; charset=utf-8',
datatype: 'json',
async: false,
success: function (msg) {
alert(msg);
},
error: function (msg) {
alert('failure');
alert(msg);
}
});
});
});
,這裏是在news.asmx Web服務代碼
Imports System.Web
Imports System.Web.Services
Imports System.Web.Services.Protocols
Imports System.Web.Script.Services
' To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
'<System.Web.Script.Services.ScriptService()> _
<WebService(Namespace:="http://tempuri.org/")> _
<WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Public Class News
Inherits System.Web.Services.WebService
<WebMethod()> _
<ScriptMethod(ResponseFormat:=ResponseFormat.Json)>
Public Function InsertCategory(ByVal catName As String) As String
Dim newid = KTOEOS.NewsCategories.InsertCategory(catName)
Return "{'c':" & newid & "}".ToString
End Function
End Class
返回的結果是:
<?xml version="1.0" encoding="utf-8"?>
<string xmlns="http://tempuri.org/">{'c':21}</string>
如果我改變了jQuery部分閱讀;
...
data: { catName: + cn },
...
然後我得到一個錯誤:
System.InvalidOperationException: Missing parameter: catName
我在做什麼錯?
您可以打印Web服務的入站和出站消息嗎? – Wint 2012-02-04 03:33:42