找不到WCF REST服务返回方法

本文关键字：返回方法服务 REST WCF 找不到 | 更新日期: 2023-09-27 17:59:23

我开发了一个WCF REST服务&尝试使用Asp.net进行测试，不过可以使用wcf测试客户端。此服务可能由非网络客户端使用。

我试图在asp.net中创建一个测试页面，通过post来验证这项服务。目前，此服务托管在我的IIS 中

服务中：

[WebInvoke(Method = "POST", ResponseFormat = WebMessageFormat.Json,
           BodyStyle = WebMessageBodyStyle.Bare, UriTemplate = "/MySVC?stringP={stringP}")]
        Stream MySVC(string stringP);

在asp.net中

$.ajax({
            type: "POST", //GET or POST or PUT or DELETE verb
            url: "http://localhost/MySvcHost/MySVC.svc?stringP",
            cache: false,
            data: '[{stringP:"samplestring"}]',
            dataType: "jsonp",
            processData: true,
            success: function (msg) {
            },
            error: function (err) {
            }
        })

当我运行测试应用程序时，它会进入错误块&Fiddler显示错误"方法不允许"并显示为GET。我还看到了额外的参数（callback=）如果我将"jsonp"更改为"json"，它将抛出"transport error"

我该怎么办？

更新：服务web.config

  <system.serviceModel>
    <services>
      <service
        name="Service.ParseService" behaviorConfiguration="ServiceBehaviour" >
        <endpoint address="" binding="webHttpBinding" behaviorConfiguration="web"
                  contract="Service.RestServiceInterface" name="BasicHttpBinding_RestServiceInterface2">
        </endpoint>
      </service>
    </services>   
    <behaviors>
      <serviceBehaviors>
        <behavior name="ServiceBehaviour">
          <!-- To avoid disclosing metadata information, set the values below to false before deployment -->
          <serviceMetadata httpGetEnabled="true" httpsGetEnabled="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>
      <endpointBehaviors>
        <behavior name="web">
          <webHttp defaultOutgoingResponseFormat="Json" />
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <bindings>
      <webHttpBinding>
        <binding maxBufferPoolSize="2000000" maxReceivedMessageSize="2000000" useDefaultWebProxy="true" allowCookies="false" name="crossDomain" crossDomainScriptAccessEnabled="true" hostNameComparisonMode="StrongWildcard" receiveTimeout="00:10:00" sendTimeout="00:10:00" openTimeout="00:10:00" closeTimeout="00:10:00"
                   maxBufferSize="2147483647" transferMode="Buffered"
                   bypassProxyOnLocal="false">
              <readerQuotas maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxDepth="1024" maxStringContentLength="2147483647" maxNameTableCharCount="16384"></readerQuotas>
        </binding>
      </webHttpBinding>
    </bindings>
    <protocolMapping>
        <add binding="basicHttpsBinding" scheme="https" />
    </protocolMapping>    
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
  </system.serviceModel>

客户端web.config

<system.serviceModel>
    <behaviors>
      <endpointBehaviors>
        <behavior name="webEndpoint">
          <webHttp defaultBodyStyle="Wrapped" defaultOutgoingResponseFormat="Json"
              helpEnabled="true"/>
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <bindings>
      <webHttpBinding>
        <binding  name="BasicHttpBinding_RestServiceInterface2" closeTimeout="00:01:00"
          openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
          allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
          maxBufferSize="2147483647" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647"
          transferMode="Buffered"
          useDefaultWebProxy="true">
          <readerQuotas maxDepth="1024" maxStringContentLength="2147483647" maxArrayLength="2147483647"
            maxBytesPerRead="2147483647" maxNameTableCharCount="16384" />
        </binding>
      </webHttpBinding>
    </bindings>
    <client>
      <endpoint behaviorConfiguration="webEndpoint" address="http://localhost:14502/MySvcHost/MySVC.svc" binding="webHttpBinding" bindingConfiguration="BasicHttpBinding_RestServiceInterface2" contract="MySVC.RestServiceInterface" name="BasicHttpBinding_RestServiceInterface2"/>
    </client>

找不到WCF REST服务返回方法

编辑3:

将baseAddress添加到web.config并删除所有不必要的内容：

<system.serviceModel>
  <services>
    <service name="Service.ParseService"
             behaviorConfiguration="ServiceBehaviour" >
      <endpoint address="" 
                binding="webHttpBinding" behaviorConfiguration="webBehavior"
                contract="Service.RestServiceInterface" name="BasicHttpBinding_RestServiceInterface2">
      </endpoint>
      <host>
        <baseAddresses>
          <add baseAddress="http://localhost:14502/MySvcHost/MySVC.svc"/>
        </baseAddresses>
      </host>
    </service>
  </services>
  <behaviors>
    <serviceBehaviors>
      <behavior name="ServiceBehaviour">
        <serviceMetadata httpGetEnabled="true" httpsGetEnabled="true" />
        <serviceDebug includeExceptionDetailInFaults="false"/>
      </behavior>
    </serviceBehaviors>
    <endpointBehaviors>
      <behavior name="webBehavior">
        <webHttp />
      </behavior>
    </endpointBehaviors>
  </behaviors>
</system.serviceModel>

启用CORS，在服务项目的web.config中添加以下行：

<system.webServer>
  <httpProtocol>
    <customHeaders>
      <add name="Access-Control-Allow-Origin" value="*" />
      <add name="Access-Control-Allow-Methods" value="GET, POST" />
    </customHeaders>
  </httpProtocol>
</system.webServer>

您的项目中必须包含MySVC.svc。内容应该是这样的：

<%@ ServiceHost Language="C#" Factory="System.Data.Services.DataServiceHostFactory, System.Data.Services, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" Service="Service.ParseService" %>

接口应为：

[ServiceContract]
public interface RestServiceInterface
{
   [WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json,
        BodyStyle = WebMessageBodyStyle.Bare, UriTemplate = "MySVC")]
   Stream MySVC(string stringP); 
}

*请注意，接口名称应该从I-IFileService、IMessageService
*Uri应该标识资源，并且应该像下面这样描述：

POST: http://localhost/files/
GET: http://localhost/files/1

阅读更多关于REST API最佳实践，REST API设计

方法实现示例：

public Stream MySVC(string stringP)
{
    var mem = new MemoryStream();
    var ser = new DataContractJsonSerializer(typeof(string));
    ser.WriteObject(mem, stringP);
    mem.Seek(0, SeekOrigin.Begin);
    return mem;
}

Ajax调用：

$.ajax(
{
    type: "POST",
    processData: false,
    contentType: "application/json",
    url: "http://localhost:14502/MySvcHost/MySVC.svc/MySVC",
    data: '"plnainString"',
    dataType: "jsonp",
    success: function (data) { alert(data); },
    error: function (data) { alert('error')); }
})

*注意：如果您从不同的机器调用服务，那么服务就是托管的，您必须将localhost更改为具体的机器名称（或IP）

仅用于调试目的启用，包括对故障消息的异常堆栈跟踪。更改服务项目的web.config（includeExceptionDetailInFaults="true"）：

<serviceBehaviors>
  <behavior name="ServiceBehaviour">
    <serviceMetadata httpGetEnabled="true" httpsGetEnabled="true" />
    <serviceDebug includeExceptionDetailInFaults="true"/>
  </behavior>
</serviceBehaviors>