错误 400-->来自客户端的 wcf 错误请求

Question

我是 WCF 新手。我正在尝试从我的 aspx 页面调用 WCF 以发布 xml 并返回 json。我的服务运行良好，但我收到“远程服务器返回错误：(400 ）错误的请求“。也许WCF的配置文件给了我这样的错误响应。我尝试了很多，但困惑只会出现在我身上..请帮助我编写代码.. 我的客户端代码是

string SampleXml = @"<parent>" +
               "<child>" +
                  "<username>username</username>" +
                    "<password>password</password>" +
                   "</child>" +
                "</parent>";
        //ASCIIEncoding encoding = new ASCIIEncoding();
        string postData = SampleXml.ToString();
        byte[] data = Encoding.UTF8.GetBytes(postData); 
        string url = "http://localhost:52573/Service1.svc/postjson/";
        HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
        request.Method = "POST";
        request.ContentType = "applicatoin/xml;charset=utf-8";
        //request.Accept = "application/json";
        request.ContentLength = data.Length;
        String test = String.Empty;
        Stream newStream = request.GetRequestStream();
        newStream.Write(data, 0, data.Length);
        newStream.Close();
        using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
        {
            Stream dataStream = response.GetResponseStream();
            StreamReader reader = new StreamReader(dataStream);
            test = reader.ReadToEnd();
            reader.Close();
            dataStream.Close();
        }
        Response.Write(test);

而WCF的Web.config文件代码是

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<appSettings>
<add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />
</appSettings>
<system.web>
<authorization>
        <allow users="?" />
</authorization>
<compilation debug="true" targetFramework="4.5" />
<httpRuntime targetFramework="4.5" />
    <identity impersonate="false" />
</system.web>
<system.serviceModel>
<services>
  <service name="JsonandXmlService.Service1"    behaviorConfiguration="myServiceBehavior">
 <!--http://localhost:52573/Service1.svc/postjson/-->
    <endpoint name="myServiceBehavior" address="" binding="webHttpBinding"  contract="JsonandXmlService.IService1" behaviorConfiguration="webHttp">
    </endpoint>
    <endpoint name="mexHttpBinding" address="mex" binding="webHttpBinding" contract="IMetadataExchange" behaviorConfiguration="webHttp" />
  </service>
</services>
<behaviors>
  <serviceBehaviors>
    <behavior name="myServiceBehavior">
      <serviceMetadata httpGetEnabled="true" />
      <serviceDebug includeExceptionDetailInFaults="true" />
    </behavior>
    <behavior>
      <!--<!– To avoid disclosing metadata information, 
             set the value below to false and remove the metadata endpoint 
             above before deployment –>-->
      <serviceMetadata httpGetEnabled="true" />
      <!--<!– To receive exception details in faults for debugging purposes, 
             set the value below to true. Set to false before deployment 
             to avoid disclosing exception information –>-->
      <serviceDebug includeExceptionDetailInFaults="true" />
    </behavior>
  </serviceBehaviors>
  <endpointBehaviors>
    <behavior name="webHttp">
      <webHttp />
    </behavior>
  </endpointBehaviors>
</behaviors>

<protocolMapping>
    <add binding="webHttpBinding" scheme="https" />

</protocolMapping>    
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
</system.serviceModel>
<system.webServer>
<modules runAllManagedModulesForAllRequests="false" />

<directoryBrowse enabled="true" />
</system.webServer>

</configuration>

我的服务文件在这里

       public string postjson(string streamdata)
       {
        return new JavaScriptSerializer().Serialize(streamdata);          
       }

界面是

 [OperationContract]
    [WebInvoke(UriTemplate = "postjson",Method="POST",RequestFormat=WebMessageFormat.Xml, ResponseFormat = WebMessageFormat.Json,BodyStyle = WebMessageBodyStyle.Wrapped)]
    string postjson(string streamdata);

Answer 1

经过长时间的挣扎输出来到这里..我没有更改WCF的web.config中的任何代码。这里我的客户端代码是

 protected void Page_Load(object sender, EventArgs e)
    {

        // Restful service URL
        string url = "http://localhost:52573/Service1.svc/postjson";
        // declare ascii encoding
        ASCIIEncoding encoding = new ASCIIEncoding();
        string strResult = string.Empty;
        // sample xml sent to Service & this data is sent in POST
        string SampleXml = @"<parent>" +
               "<child>" +
                  "<username>username</username>" +
                    "<password>password</password>" +
                   "</child>" +
                "</parent>";
        string postData = SampleXml.ToString();
        // convert xmlstring to byte using ascii encoding
        byte[] data = encoding.GetBytes(postData);
        // declare httpwebrequet wrt url defined above
        HttpWebRequest webrequest = (HttpWebRequest)WebRequest.Create(url);

        // set method as post
        webrequest.Method = "POST";
        // set content type
        //webrequest.Accept = "application/xml;q=0.8";
        //webrequest.ContentType = "application/xml;charset=utf-8";
        webrequest.ContentType = "application/x-www-form-urlencoded";
        // set content length
        webrequest.ContentLength = data.Length;
        // get stream data out of webrequest object
        Stream newStream = webrequest.GetRequestStream();
        newStream.Write(data, 0, data.Length);
        newStream.Close();
        // declare & read response from service
        HttpWebResponse webresponse = (HttpWebResponse)webrequest.GetResponse();

        // set utf8 encoding
        Encoding enc = System.Text.Encoding.GetEncoding("utf-8");
        // read response stream from response object
        StreamReader loResponseStream =
            new StreamReader(webresponse.GetResponseStream(), enc);
        // read string from stream data
        strResult = loResponseStream.ReadToEnd();
        // close the stream object
        loResponseStream.Close();
        // close the response object
        webresponse.Close();
        // below steps remove unwanted data from response string
        Response.Write(strResult);

    }

而我的服务实现代码是

     public string postjson(Stream streamdata)
    {
        StreamReader reader = new StreamReader(streamdata);
        string xmlString = reader.ReadToEnd();
        string returnValue = new JavaScriptSerializer().Serialize(xmlString);
        return returnValue.ToString();
    }

这就是我所做的...我也清除了最近的文件...