Question

我试图实现一个wcf服务但是收到404错误。我想要一个返回JSON的REST服务。

请参阅下面的代码，但是，当我访问：www.domain.nl/api或访问www.domain.nl/api/getobjects时，我得到了404

我错过了什么？

** * web.config

 <system.serviceModel>
   <services>
     <service name="wcf_geolocation">
       <!-- not sure which class I should name here, see my attached code for definition of interface-->
       <host>
         <baseAddresses>
           <add baseAddress="http://www.domain.nl/api" />
           <!--  /api is the URL I want, do I need to configure that in URL rewrite or IIS or...?-->
         </baseAddresses>
       </host>
       <endpoint address="getobjects" binding="wsHttpBinding" contract="Iwcf_geolocation" />
     </service>
   </services>

   <behaviors>
   <serviceBehaviors>
    <behavior name="">
     <serviceMetadata httpGetEnabled="true" />
     <serviceDebug includeExceptionDetailInFaults="false" />
    </behavior>
   </serviceBehaviors>
  </behaviors>
  <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
 </system.serviceModel>

** * Iwcf_geolocation.vb

Imports System.ServiceModel
Imports System
Imports System.Collections.Generic
Imports System.ServiceModel.Description
Imports System.ServiceModel.Web
Imports System.Text
' NOTE: You can use the "Rename" command on the context menu to change the interface name "Iwcf_geolocation" in both code and config file together.
<ServiceContract()>
Public Interface Iwcf_geolocation

    <OperationContract()>
    Sub DoWork()


    <OperationContract()> _
<WebGet()> _
    Function EchoWithGet(ByVal s As String) As String

    <OperationContract()> _
    <WebInvoke()> _
    Function EchoWithPost(ByVal s As String) As String


End Interface

** * wcf_geolocation.vb

' NOTE: You can use the "Rename" command on the context menu to change the class name "wcf_geolocation" in code, svc and config file together.
Public Class wcf_geolocation
    Implements Iwcf_geolocation

    Public Sub DoWork() Implements Iwcf_geolocation.DoWork
    End Sub

    Public Function EchoWithGet(ByVal s As String) As String Implements Iwcf_geolocation.EchoWithGet
        Return "You said " + s
    End Function

    Public Function EchoWithPost(ByVal s As String) As String Implements Iwcf_geolocation.EchoWithPost
        Return "You said " + s
    End Function

End Class

Answer 1

看起来问题在于绑定REST绑定应该是webHttpBinding。我在你的web.config.try中做了一些修改

<system.serviceModel>
    <services>
      <service name="wcf_geolocation" behaviorConfiguration="ServiceBehavior">
        <!-- not sure which class I should name here, see my attached code for definition of interface-->
        <host>
          <baseAddresses>
            <add baseAddress="http://www.domain.nl/api" />
            <!--  /api is the URL I want, do I need to configure that in URL rewrite or IIS or...?-->
          </baseAddresses>
        </host>
        <endpoint address="getobjects"  behaviorConfiguration="JsonBehavior" binding="webHttpBinding" contract="Iwcf_geolocation" />
      </service>
    </services>

    <behaviors>
      <endpointBehaviors>

        <behavior name="JsonBehavior">
          <webHttp />
        </behavior>
      </endpointBehaviors>
      <serviceBehaviors>
        <behavior name="ServiceBehavior">
          <!-- 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="false"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
  </system.serviceModel>

修改

您好我已根据您的评论更新了答案。请看一下并告诉我。

Imports System.Collections Imports System.Collections.Generic Imports System.Data Imports System.Diagnostics Imports System.ServiceModel Imports System.ServiceModel.Description Imports System.ServiceModel.Web Imports System.Text ' NOTE: You can use the "Rename" command on the context menu to change the interface name "Iwcf_geolocation" in both code and config file together. <ServiceContract> _ Public Interface Iwcf_geolocation <OperationContract> _ Sub DoWork() <OperationContract> _ <WebGet(RequestFormat := WebMessageFormat.Json, ResponseFormat := WebMessageFormat.Json, UriTemplate := "EchoWithGet/{s}")> _ Function EchoWithGet(s As String) As String <OperationContract> _ <WebInvoke(Method := "POST", UriTemplate := "EchoWithPost/{s}", BodyStyle := WebMessageBodyStyle.Bare)> _ Function EchoWithPost(s As String) As String End Interface Imports System.Collections Imports System.Collections.Generic Imports System.Data Imports System.Diagnostics ' NOTE: You can use the "Rename" command on the context menu to change the class name "wcf_geolocation" in code, svc and config file together. Public Class wcf_geolocation Inherits Iwcf_geolocation Public Sub DoWork() End Sub Public Function EchoWithGet(s As String) As String Return "You said " & s End Function Public Function EchoWithPost(s As String) As String Return "You said " & s End Function End Class

<小时/>

<behaviors> <endpointBehaviors> <behavior name="JsonBehavior"> <webHttp /> </behavior> </endpointBehaviors> <serviceBehaviors> <behavior name="ServiceBehavior">  <serviceMetadata httpGetEnabled="true"/>  <serviceDebug includeExceptionDetailInFaults="false"/> </behavior> </serviceBehaviors> </behaviors> <serviceHostingEnvironment multipleSiteBindingsEnabled="true" /> </system.serviceModel>

如何在浏览器中测试服务

http：// [XXXX.XXX] /ServiceName.svc/EchoWithGet/peter

对于 EchoWithPost 服务，您必须编写代码，或者您可以使用fiddler对其进行测试。

Answer 2

运行服务器管理器（在任务栏和开始菜单上）选择要管理的服务器（可能是本地服务器）向下滚动到＆＃34;角色和功能＆＃34;部分。选择＆＃34;添加角色或功能＆＃34;从任务下拉菜单在＆＃34;添加角色或功能向导＆＃34;对话框，单击下面的＆＃34;功能＆＃34;在左侧页面列表中。展开＆＃34; .Net 3.5＆＃34;或者＆＃34; .Net 4.5＆＃34;，取决于您安装的内容。（如果你没有，你可以回到＆＃34;角色＆＃34;屏幕添加。在＆＃34; WCF服务＆＃34;下，选中＆＃34; HTTP-Activation＆＃34;的复选框。如果您知道需要它们（tcp，命名管道等），也可以添加非http类型。点击＆＃34;安装＆＃34;按钮。

asp.net wcf服务抛出404

2 个答案: