操作＆＃39; GetImagesRequest＆＃39;合同＆＃39; IRetrieveInformation＆＃39;指定要在没有任何包装器的情况下序列化的多个请求主体参数

Question

我正在尝试编写一个可由jQuery AJAX函数调用的RESTful WCF服务。我在找出要使用的正确URL时遇到了问题，因此我编写了代码来回调后面的代码，并在代码后面调用服务以确保服务正常运行。所以这就是问题所在。当后面的代码调用一个服务函数时，我得到另一个错误：

  

类型＆＃39; System.InvalidOperationException＆＃39;的例外情况发生在   System.ServiceModel.Web.dll但未在用户代码中处理

     

其他信息：操作＆＃39; GetImagesRequest＆＃39;合同   ＆＃39; IRetrieveInformation＆＃39;指定多个请求体参数   没有任何包装元素的序列化。最多一个身体参数   可以序列化没有包装元素。要么删除额外的   body参数或设置BodyStyle属性   WebGetAttribute / WebInvokeAttribute to Wrapped。

我读了很多帖子，据说是BodyStyle = WebMessageBodyStyle.Wrapped。很容易修复，除了我的方法已经装饰了。我试图在服务中注释掉代码，因为那不是我正在测试的函数，但我总是得到同样的错误。请有人，任何人，帮助!!!

服务接口：

namespace DigitalSignage.Services
{
    //[ServiceContract(ConfigurationName = "Data.GetData")]
    [ServiceContract]
    public interface IRetrieveInformation
    {
        [OperationContract]
        [WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.Wrapped, RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, UriTemplate = "GetImagesRequest?slideshow={slideshow}")]
        string GetImagesRequest(DisplaySlideShow slideshow);

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

        [OperationContract]
        [WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.Wrapped, RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json)]
        string GetCalendarRequest(DisplayLocation location);

        [OperationContract]
        [WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.Wrapped, RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json)]
        string GetLayoutRequest(DisplayLocation location);
    }
}

服务实施：

    namespace DigitalSignage.Services
{
    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
    public class RetrieveInformation : IRetrieveInformation
    {
        public string GetImagesRequest(DisplaySlideShow slideshow)
        {
            RetrieveImages ri = new RetrieveImages();
            return ri.GetImageLocation(slideshow);
        }

        public string GetNewsRequest()
        {
            RetrieveNews rn = new RetrieveNews();
            return rn.GetSigmaNews();
        }

        public string GetCalendarRequest(DisplayLocation location)
        {
            RetrieveCalendar rc = new RetrieveCalendar();
            return rc.GetCalendar(location);
        }

        public string GetLayoutRequest(DisplayLocation location)
        {
            RetrieveLayout rl = new RetrieveLayout();
            return rl.GetLayout(location);
        }
    }
}

SERVICE WEB CONFIG：

<?xml version="1.0"?>
<configuration>

  <appSettings>
    <add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />
  </appSettings>
  <system.web>
    <compilation debug="true" targetFramework="4.5.2" />
    <httpRuntime targetFramework="4.5.2"/>
  </system.web>


  <system.serviceModel>
    <!--<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />-->
    <bindings>
      <webHttpBinding>
        <binding name="Service.WebHttpBinding">
          <security mode="TransportCredentialOnly">
            <transport clientCredentialType="None"/>
          </security>
        </binding>
      </webHttpBinding>
    </bindings>

    <services>
      <service name="DigitalSignage.Services.RetrieveInformation" behaviorConfiguration="Service.ServiceBehaviors">
        <endpoint address=""
                  contract="DigitalSignage.Services.IRetrieveInformation"
                  binding="webHttpBinding"
                  bindingConfiguration="Service.WebHttpBinding"
                  behaviorConfiguration="Service.EndpointBehaviors"/>
        <!--  Enable AJAX Calls -->
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
      </service>
    </services>

    <behaviors>
      <endpointBehaviors>
        <!--  Enable AJAX Calls -->
        <behavior name="ServiceAspNetAjaxBehavior">
          <enableWebScript />
        </behavior>

        <behavior name="Service.EndpointBehaviors">
          <webHttp />
        </behavior>
      </endpointBehaviors>
      <serviceBehaviors>
        <behavior name="Service.ServiceBehaviors">
          <serviceSecurityAudit auditLogLocation="Application" suppressAuditFailure="true"
            serviceAuthorizationAuditLevel="Failure" messageAuthenticationAuditLevel="SuccessOrFailure" />
          <serviceMetadata httpGetEnabled="true"/>
        </behavior>

        <behavior>
          <!-- To avoid disclosing metadata information, set the values below to false 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="false"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <protocolMapping>
      <add binding="basicHttpsBinding" scheme="https" />
    </protocolMapping>
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
  </system.serviceModel>


  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
    <!--
        To browse web app root directory during debugging, set the value below to true.
        Set to false before deployment to avoid disclosing web app folder information.
      -->
    <directoryBrowse enabled="true"/>
  </system.webServer>

</configuration>

CALL背后的代码：

 [WebMethod]
    public static string GetCalendar(string city, string building, string room)
    {
        JavaScriptSerializer jsonSeralizer = new JavaScriptSerializer();
        try
        {
            string calendarString = ri.GetCalendarRequest(city, building, room).ToString();
            return jsonSeralizer.Serialize(calendarString);
        }
        catch (Exception e)
        {
            throw e;
        }
    }

    [WebMethod]
    public static string GetSigmaNews()
    {
        JavaScriptSerializer jsonSeralizer = new JavaScriptSerializer();

        string news = ri.GetNewsRequest();
        return jsonSeralizer.Serialize(news);
    }


    [WebMethod]
    public static string GetImages(string folderName, string city, string building, string room)
    {
        JavaScriptSerializer jsonSeralizer = new JavaScriptSerializer();
        string imagesList = ri.GetImagesRequest(folderName, city, building, room);
        return jsonSeralizer.Serialize(imagesList);
    }

jQuery AJAX CALL（一个示例）：

function getCalendar() {
    var dataString = '{"city":' + $('#hdnCity').val() + '", "building":"' + $('#hdnBuilding').val() + '", "room":"' + $('#hdnRoom').val() + '"}';
    $.ajax({
        type: "Post",
        url: "Layout2.aspx/GetCalendar",
        data: dataString,
        contentType: "application/json; charset=utf-8",
        dataType: 'json',
        success: function complete(result, jqXHR, status) {
            var calendar = JSON.parse(result.d);
            $('#calendar').append(calendar);
        },
        error: function (result, jqXHR, status) {
            alert("getCalendar failed because: " + JSON.parse(result.responseText).Message);
        }
    });
}

FRONT END WEB CONFIG：

<?xml version="1.0" encoding="utf-8"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->
<configuration>
  <system.web>
    <compilation debug="true" targetFramework="4.5.2"/>
    <httpRuntime targetFramework="4.5.2" executionTimeout="90" maxRequestLength="11264" />
  </system.web>
  <system.codedom>
    <compilers>
      <compiler language="c#;cs;csharp" extension=".cs"
        type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
        warningLevel="4" compilerOptions="/langversion:6 /nowarn:1659;1699;1701"/>
      <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb"
        type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
        warningLevel="4" compilerOptions="/langversion:14 /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+"/>
    </compilers>
  </system.codedom>

  <system.serviceModel>
    <!--<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />-->
    <bindings>
      <webHttpBinding>
        <binding name="Service.WebHttpBinding">
          <security mode="TransportCredentialOnly">
            <transport clientCredentialType="None"/>
          </security>
        </binding>
      </webHttpBinding>
    </bindings>

    <client>

      <!--<service name="DigitalSignage.Services.IRetrieveInformation.svc" behaviorConfiguration="Service.ServiceBehaviors">-->
        <endpoint address="http://localhost:50675/DigitalSignage.Services.IRetrieveInformation"
                  contract="DigitalSignage.Services.IRetrieveInformation"
                  binding="webHttpBinding"
                  bindingConfiguration="Service.WebHttpBinding"
                  behaviorConfiguration="Service.EndpointBehaviors"/>
      <!--</service>-->
    </client>

    <behaviors>
      <endpointBehaviors>
        <behavior name="Service.EndpointBehaviors">
          <webHttp />
        </behavior>
      </endpointBehaviors>
      <serviceBehaviors>
        <behavior name="Service.ServiceBehaviors">
          <serviceSecurityAudit auditLogLocation="Application" suppressAuditFailure="true"
            serviceAuthorizationAuditLevel="Failure" messageAuthenticationAuditLevel="SuccessOrFailure" />
          <serviceMetadata httpGetEnabled="true"/>
        </behavior>

        <behavior>
          <!-- To avoid disclosing metadata information, set the values below to false 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="false"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <protocolMapping>
      <add binding="basicHttpsBinding" scheme="https" />
    </protocolMapping>
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
  </system.serviceModel>

</configuration>