为什么我的 C# 客户端发布到我的 WCF REST 服务，返回 (400) 错误请求？
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Why does my C# client, POSTing to my WCF REST service, return (400) Bad Request?
提问by Rob
I'm trying to send a POST request to a simple WCF service I wrote, but I keep getting a 400 Bad Request. I'm trying to send JSON data to the service. Can anyone spot what I'm doing wrong? :-)
我正在尝试向我编写的一个简单 WCF 服务发送 POST 请求，但我不断收到 400 Bad Request。我正在尝试将 JSON 数据发送到服务。谁能发现我做错了什么？:-)
This is my service interface:
这是我的服务接口：
public interface Itestservice
{
[OperationContract]
[WebInvoke(
Method = "POST",
UriTemplate = "/create",
RequestFormat = WebMessageFormat.Json,
ResponseFormat = WebMessageFormat.Json)]
String Create(TestData testData);
}
The implementation:
实施：
public class testservice: Itestservice
{
public String Create(TestData testData)
{
return "Hello, your test data is " + testData.SomeData;
}
}
The DataContract:
数据契约：
[DataContract]
public class TestData
{
[DataMember]
public String SomeData { get; set; }
}
And finally my client code:
最后我的客户端代码：
private static void TestCreatePost()
{
Console.WriteLine("testservice.svc/create POST:");
Console.WriteLine("-----------------------");
Uri address = new Uri("http://localhost:" + PORT + "/testweb/testservice.svc/create");
// Create the web request
HttpWebRequest request = WebRequest.Create(address) as HttpWebRequest;
// Set type to POST
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
//request.ContentType = "text/x-json";
// Create the data we want to send
string data = "{\"SomeData\":\"someTestData\"}";
// Create a byte array of the data we want to send
byte[] byteData = UTF8Encoding.UTF8.GetBytes(data);
// Set the content length in the request headers
request.ContentLength = byteData.Length;
// Write data
using (Stream postStream = request.GetRequestStream())
{
postStream.Write(byteData, 0, byteData.Length);
}
// Get response
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
{
// Get the response stream
StreamReader reader = new StreamReader(response.GetResponseStream());
// Console application output
Console.WriteLine(reader.ReadToEnd());
}
Console.WriteLine();
Console.WriteLine();
}
Can anyone think of what I might be doing wrong? As you can see in the C# client I've tried both application/x-www-form-urlencoded and text/x-json for ContentType, thinking that might have something to do with it, but it doesn't seem to. I've tried a GET version of this same service and it works fine, and returns a JSON version of TestData with no problem. But for POST, well, I'm pretty stuck at the moment on this :-(
谁能想到我可能做错了什么？正如您在 C# 客户端中看到的，我为 ContentType 尝试了 application/x-www-form-urlencoded 和 text/x-json，认为这可能与它有关，但似乎没有。我已经尝试了这个相同服务的 GET 版本，它工作正常，并且返回一个 JSON 版本的 TestData 没有问题。但是对于 POST，嗯，我现在很困惑:-(
采纳答案by Darrel Miller
回答by baretta
Try:
尝试：
[OperationContract]
[WebInvoke(
Method = "POST",
UriTemplate = "/create",
RequestFormat = WebMessageFormat.Json,
ResponseFormat = WebMessageFormat.Json,
/* non-wrapped */ BodyStyle = WebMessageBodyStyle.Bare )]
String Create(TestData testData);
回答by Ray Lu
The only problem here is the ContentType.
这里唯一的问题是 ContentType。
try ( recommended )
试试（推荐）
request.ContentType = "application/json; charset=utf-8";
or ( this will work too )
或（这也行）
request.ContentType = "text/json; charset=utf-8";
Both of above solve the problem. However, the first one is recommended, for details of JSON-RPC 1.1 Specification check out http://json-rpc.org
以上两个都解决了问题。但是，建议使用第一个，有关 JSON-RPC 1.1 规范的详细信息，请查看http://json-rpc.org
