无法处理的消息，因为内容类型“应用/ JSON的;字符集= UTF-8'是不是预期的类型“文本/ XML;字符集= UTF-8“ [英] Cannot process the message because the content type 'application/json; charset=utf-8' was not the expected type 'text/xml; charset=utf-8'

问题描述

我呼吁通过AJAX JSON WCF服务时，得到上述回应。我的调用代码为：

I am get the above response when calling a WCF service via ajax json. My calling code is:

<script type="text/javascript">
    $(document).ready(function () {
        $.ajax
        ({
            type: "POST",
            contentType: "application/json; charset=utf-8",
            url: "http://localhost:90/WebServices/UserService.svc/Calculate",
            data: "{}",
            timeout: 10000,
            dataType: "json",
            success: function (response) {
                alert(response)
            },
            error: function (xhr, ajaxOptions, thrownError) {
                alert(xhr.statusText);
                alert(thrownError);
            }
        });
    });
</script>

我的服务是：

My service is:

[ServiceContract]
public interface IUserService
{
    [OperationContract]
    [WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.Wrapped, ResponseFormat = WebMessageFormat.Json
     )]
    Answer Calculate();
}

[DataContract]
public class Answer
{
    [DataMember]
    public string answer { get; set; }
}

我的方法是：

My method is :

[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
[ServiceBehavior(IncludeExceptionDetailInFaults = true)]
public class UserService : IUserService
{
    public Answer Calculate()
    {
        Answer answer = new Answer();
        answer.answer="Hello World";
        return answer;
    }
}

我一直缠斗用了一段时间，我看到其他人都有过同类型的问题，我尝试了所有有建议，但仍然没有什么工作。

I have been battling with for sometime, I see other people have had the same type problem and I tried all there suggestions but still nothing is working.

问题出在哪里？我该如何解决呢？

Where is the problem? How can I solve it?

推荐答案

我猜在这里，因为你没有告诉你如何定义你的终点，但我敢肯定它的情况。您的端点没有为网络消费的定义 - 它可能使用 basicHttpBinding的。消耗通过jQuery（或其他一般的Web / REST客户端）端点您需要定义与的WebHttpBinding ，并应用 WebHttpBehavior <端点/ code>吧。

I'm guessing here since you didn't show how you defined your endpoint, but I'm pretty sure it's the case. Your endpoint is not defined for web consumption - it's likely using basicHttpBinding. To consume the endpoint via jQuery (or other web/REST clients in general) you need to define an endpoint with the WebHttpBinding, and apply the WebHttpBehavior to it.

有不同的方法来正确定义端点。一个最简单的就是使用 WebServiceHostFactory 在.svc文件：

There are different ways to define the endpoint correctly. The easiest one is to use the WebServiceHostFactory in your .svc file:

UserService.svc

<%@ ServiceHost Language="C#" Debug="true" Service="YourNamespace.UserService"
                Factory="System.ServiceModel.Activation.WebServiceHostFactory" %>

这篇关于无法处理的消息，因为内容类型“应用/ JSON的;字符集= UTF-8'是不是预期的类型“文本/ XML;字符集= UTF-8“的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！