消费在C#JSON WCF服务 [英] Consume JSON WCF services in C#
问题描述
我想从我的网页背后的code消耗的json WCF Web服务:
I want to consume my json wcf web service from the code behind of my page:
Default.aspx.cs
Default.aspx.cs
string result = url + "/ExecuteAction?callback=?";
var httpWebRequest = (HttpWebRequest)WebRequest.Create(result);
httpWebRequest.ContentType = "text/json";
httpWebRequest.Method = "POST";
using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
string json = new JavaScriptSerializer().Serialize(new
{
action = "HelloWorld",
args = "Nabila"
});
streamWriter.Write(json);
streamWriter.Flush();
streamWriter.Close();
}
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
var response = streamReader.ReadToEnd();
}
我的服务:
[OperationContract]
[WebGet(ResponseFormat = WebMessageFormat.Json)]
public string ExecuteAction(string action, string args)
{
String JSONResult = String.Empty;
MethodInfo action = services.GetMethod(action, BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static);
JSONResult =(String)action.Invoke(null, new object[] { args });
}
services.cs
services.cs
public static string HelloWorld(string msg)
{
return JsonConvert.SerializeObject("Hello World"+msg);
}
我得到了以下异常:
I get the following exception :
使用来自C#中的远程服务器返回错误的JSON WCF Web服务:(405)不允许的方法。 System.Web.Util.CalliEventHandlerDelegateProxy.Callback(对象发件人,EventArgs五)
consume json wcf web service from c# The remote server returned an error: (405) Method Not Allowed. System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
请注意:
它的工作原理,当我使用javascript消耗我的web服务:
Note: It works when I consume my web service using javascript:
$.ajax({
type: "POST",
crossDomain: true,
timeout: 10000,
url: getUrl() + "ExecuteAction?callback=?",
data: { action: "HelloWorld", args: 'test'},
contentType: "application/json; charset=utf-8",
dataType: "jsonp"
}).done(function (msg) {alert("success");}).fail(function () {alert("error");});
您能帮我。
感谢。
纳比拉。
推荐答案
我观察,你的问题是与数据类型即可。在JavaScript调用,您设置的 datType 为 JSONP
I am observing that your problem is with DataType. In your Javascript call, you are setting datType as jsonp
dataType: "jsonp"
而在你的Default.aspx.cs文件,你都发送纯JSON。有<一个href=\"http://stackoverflow.com/questions/2887209/what-are-the-differences-between-json-and-jsonp\">difference JSON和JSONP之间。
尝试在您的 Deafult.aspx.cs 文件改变JSON类型,然后运行。这可能会解决你的问题。
Try changing JSON type in your Deafult.aspx.cs file and then run. This might resolve your problem.
编辑:
改变你的合同为:
Change your Contract as:
[OperationContract]
[WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, UriTemplate = "json")]
public string ExecuteAction(JSONRequest request)
{
String JSONResult = String.Empty;
MethodInfo action = services.GetMethod(action, BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static);
JSONResult =(String)action.Invoke(null, new object[] { args });
}
[DataContract]
public class JSONRequest
{
[DataMember]
public string Action {get; set;}
[DataMember]
public string Args {get; set;}
}
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