从WCF服务检索元数据时出错

Question

我创建了一个非常简单的WCF服务，但由于某种原因，我遇到了svcutil的问题。我使用下面的命令：

svcutil http://localhost:8098/IceVSServer/service?wsdl 

我得到以下输出：

Microsoft (R) Service Model Metadata Tool 
[Microsoft (R) Windows (R) Communication Foundation, Version 4.0.30319.1] 
Copyright (c) Microsoft Corporation. All rights reserved. 

Attempting to download metadata from 'http://localhost:8098/IceVsServer/service?wsdl' using WS-Metadata Exchange or DISCO. 
Microsoft (R) Service Model Metadata Tool 
[Microsoft (R) Windows (R) Communication Foundation, Version 4.0.30319.1] 
Copyright (c) Microsoft Corporation. All rights reserved. 

Error: Cannot obtain Metadata from http://localhost:8098/IceVsServer/service?wsdl 

If this is a Windows (R) Communication Foundation service to which you have acce 
ss, please check that you have enabled metadata publishing at the specified addr 
ess. For help enabling metadata publishing, please refer to the MSDN documentat 
ion at http://go.microsoft.com/fwlink/?LinkId=65455. 


WS-Metadata Exchange Error 
    URI: http://localhost:8098/IceVsServer/service?wsdl 

    Metadata contains a reference that cannot be resolved: 'http://localhost:8098/IceVsServer/service?wsdl'. 

There was no endpoint listening at http://localhost:8098/IceVsServer/service 
?wsdl that could accept the message. This is often caused by an incorrect addres 
s or SOAP action. See InnerException, if present, for more details. 

The remote server returned an error: (404) Not Found. 


HTTP GET Error 
    URI: http://localhost:8098/IceVsServer/service?wsdl 

There was an error downloading 'http://localhost:8098/IceVsServer/service?wsdl'. 

The request failed with HTTP status 404: Not Found. 

If you would like more help, type "svcutil /?" 

错误似乎表明我没有MEX端点。我做的事实上，如果我把URL放到我的浏览器中，XML就会出现。

这里是我的app.config：

<?xml version="1.0" encoding="utf-8" ?> 
<configuration> 
    <system.serviceModel> 
    <services> 
     <service name="IceVSService.IceVsService" behaviorConfiguration="IceVsServiceBehavior"> 
     <host> 
      <baseAddresses> 
      <add baseAddress="http://localhost:8098/IceVsService/service"/> 
      </baseAddresses> 
     </host> 
     <!-- this endpoint is exposed at the base address provided by host: http://localhost:8098/IceVsService/service --> 
     <endpoint address="" 
        binding="wsHttpBinding" 
        contract="IceVSService.IIceVersioningSystem" /> 
     <!-- the mex endpoint is explosed at http://localhost:8098/IceVsService/service/mex --> 
     <endpoint address="mex" 
        binding="mexHttpBinding" 
        contract="IMetadataExchange" /> 
     </service> 
    </services> 
    <behaviors> 
     <serviceBehaviors> 
     <behavior name="IceVsServiceBehavior"> 
      <serviceMetadata httpGetEnabled="true"/> 
      <serviceDebug includeExceptionDetailInFaults="False"/> 
     </behavior> 
     </serviceBehaviors> 
    </behaviors> 
    </system.serviceModel> 
</configuration> 

Answer 1

您与Mex混淆HttpGet。这些是发布服务详细信息的两种不同方式 - “metadata exchange format”（MEX）或“web service description language”（WSDL）。

在你的配置中你已经定义了两者;但是您尚未定义httpgeturl属性，因此它将被视为空字符串。 所以你的wsdl地址将是：http://localhost:8098/IceVsService/service?wsdl 而不是http://localhost:8098/IceVsServer/service（IceVsServer没有在任何地方定义）。

你MEX地址也将与SvcUtil工具工作：http://localhost:8098/IceVsService/service/mex