调用WCF服务操作时HTTP 400 Bad Request?

Xai*_*oft 6 .net wcf bad-request

当我调用http://localhost/TestService.svc/GetColors时,我得到一个Http(400)错误请求.当我在小提琴手中运行时,我也得到了错误请求.当我通过wcf测试客户端调用服务时,它工作正常.什么可能导致这个?

服务合约:

[ServiceContract]
public interface ITestService
{
    [OperationContract]
    string GetColors();
}
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ITestService的实施:

[ServiceBehavior(InstanceContextMode=InstanceContextMode.Single)]
public class TestService : ITestService
{
    public List<Color> GetColors()
    {
        List<Color> colors= new List<Color>();

        colors.Add(new Color { Name = "Red", Code = "123" });
        colors.Add(new Color { Name = "Blue", Code = "323" });
        colors.Add(new Color { Name = "Green", Code = "3394" });

       return colors;
    }
}
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这是我的web.config:

<?xml version="1.0"?>
<configuration>
   <system.web>
       <compilation debug="true" targetFramework="4.0"/>
   </system.web>
   <system.serviceModel>
      <bindings>
         <wsHttpBinding>
            <binding name="CustomAuthentication">
               <security mode="Message">
                  <message clientCredentialType="UserName"/>
               </security>
            </binding>
         </wsHttpBinding>
      </bindings>
      <serviceHostingEnvironment multipleSiteBindingsEnabled="true"/>
      <services>
          <service name="TestService.TestService"
                behaviorConfiguration="CustomValidator" >
             <endpoint 
                 address="" 
                 binding="wsHttpBinding" 
                 bindingConfiguration="CustomAuthentication"
                 contract="TestService.ITestService">
                 <identity>
                    <dns value="localhost" />
                 </identity>
             </endpoint>
             <endpoint 
                 address="mex" 
                 binding="mexHttpBinding" 
                 contract="IMetadataExchange" />
             <host>
                 <baseAddresses>
                     <add baseAddress="http://localhost/TestService/" />
                 </baseAddresses>
             </host>
          </service>
      </services>
      <behaviors>
          <serviceBehaviors>
             <behavior name="CustomValidator">
                <serviceCredentials>
                   <userNameAuthentication userNamePasswordValidationMode="Custom"
                                customUserNamePasswordValidatorType="TestService.CustomUserNameValidator, TestService"/>
                   <serviceCertificate findValue="Test" storeLocation="LocalMachine" 
                         storeName="My" x509FindType="FindBySubjectName"/>
                </serviceCredentials>
                <serviceMetadata httpGetEnabled="True"/>
             </behavior>
             <behavior>
                <serviceMetadata httpGetEnabled="True"/>
                <serviceDebug includeExceptionDetailInFaults="False"/>
             </behavior>
         </serviceBehaviors>
      </behaviors>
   </system.serviceModel>
   <system.webServer>
       <modules runAllManagedModulesForAllRequests="true"/>
   </system.webServer>
</configuration>
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当我打电话给它时,我只是打开一个浏览器并输入网址http://localhost/TestService.svc/GetColors.如果我通过开发环境这样做,我会看到Http 400错误的请求.如果我通过IIS执行此操作,我只会看到一个空白页面.

这是InnerException:

<ExceptionString>System.Xml.XmlException: The body of the message cannot be read  
because it is empty.</ExceptionString>
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关于我的CustomUserNameValidation的另一个问题:

我通过UserNamePasswordValidator的验证方法实现自定义验证,但是当我通过wcf客户端调用类似GetColors的东西时,它不会调用Validate方法.我可以将它调用Invoke验证的唯一方法是在GetColors中直接调用Validate(user,pass).如果你在web.config中正确设置它,我认为它可以自动调用每个服务调用.

mar*_*c_s 5

您的服务合同和服务实施似乎不匹配....

服务合同定义了stringGetColors()以下位置返回的单个:

[ServiceContract]
public interface ITestService
{
    [OperationContract]
    string GetColors();
}
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但是实现返回了一个List<Color>:

[ServiceBehavior(InstanceContextMode=InstanceContextMode.Single)]
public class TestService : ITestService
{
    public List<Color> GetColors()
    {
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你有没有机会改变你的服务实现,忘了更新服务合同?

另外:由于这是一个带有a的SOAP服务wsHttpBinding,你不能只通过浏览到它的地址从浏览器调用该方法 - 你需要使用WCF测试客户端(如你所说的那样工作).你也不能从Fiddler那里调用它 - 你必须手动创建带有标题和正文的整个SOAP信封 - 这根本不是一件容易的事.

您可以尝试的是去http://localhost/TestService.svc?wsdl检查您是否将获得该服务的正确WSDL.