在iis 7.5中wcf rest service json响应的未知文件类型 [英] Unknown file type for wcf rest service json response in iis 7.5

问题描述

我在wcf rest服务中遇到问题，返回json响应。在我的本地IIS-Webserver上运行Visual Studio 2010中的服务工作得很好。

I´m facing a problem in my wcf rest service returning a json response. Running the service in Visual Studio 2010 on my local IIS- Webserver worked perfectly.

但是现在我在Windows Server 2008上使用相同的web.config运行相同的服务R2与IIS 7.5和我通过

But now I´m running the same service with the same web.config on Windows Server 2008 R2 with IIS 7.5 and when I´m calling the service via

* http：//localhost/EchoService/EchoService.svc/echo/123

*http://localhost/EchoService/EchoService.svc/echo/123

它不会返回json结果，而是一个带有未知文件类型的下载对话框，其中包含json结果。

it doesn´t return the json result but a download dialog with an unknown file type with the json result in it.

首先我认为问题是，网络服务器不知道json mime类型所以我添加了：

First I thought the problem is, that the webserver does not know the json mime type so I added it with:

扩展名： .json

MIME-类型： application / json

MIME- Type: application/json

条目类型： local

但它没有解决问题。你能否告诉我为什么它将结果作为文件返回并且不知道文件类型？

But it didn´t solve the problem. Can you please tell me why it is returning the result as a file and doesn´t know the file type?

这是我的web.config：

Here´s my web.config:

<?xml version="1.0" encoding="UTF-8"?>
   <configuration>
      <system.serviceModel>
         <services>
            <service name="wcf_iis_proto_1.EchoService">
               <endpoint address="" binding="webHttpBinding" contract="wcf_iis_proto_1.IEchoService" behaviorConfiguration="webEcho" />
            </service>
         </services>
         <behaviors>
            <endpointBehaviors>
               <behavior name="webEcho">
                  <webHttp />
               </behavior>
            </endpointBehaviors>
         </behaviors>
    </system.serviceModel>
</configuration>

这是我的服务合约（使用和命名空间省略）：

And here is my service contract (left out using and namespace):

public interface IEchoService
{
   [OperationContract]
   [WebGet(UriTemplate = "/echo/{message}", ResponseFormat = WebMessageFormat.Json)]
   string EchoMessage(string message);
}

和服务实施：

public class EchoService: IEchoService
{
    public string EchoMessage(string message)
    {
       return "Hey Buddy. You said: " + message + "!";
    }
 }

我希望你能帮助我。谢谢!!!

I hope you can help me. Thanks!!!

推荐答案

可能是浏览器中的预期行为。它认为Json是一种下载类型。为避免这种情况，您应该更改内容类型以响应text / plain。 此处讨论了如何执行此操作。

Might be it is expected behavior in your browser. It considers Json as a type to download. To avoid this you should change content type in response to "text/plain". Here was discussed how to do this.

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