尝试使用 SVCUTIL.EXE 创建 Web 服务代理时出现“未生成代码”错误

Question

当尝试使用 SVCUTIL.EXE（在命令行或通过 Visual Studio）创建 Web 服务代理 (WCF) 时，我收到以下无意义的错误消息。

注意：该服务没有任何问题，因为它可以在另一台机器上正常运行。这是 Windows 的新安装，该服务在我的本地机器上。使用不同机器上的 URL 在我的机器上生成相同的代理可以正常工作。

发生了什么事？！

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 'https://ws1.example.com/ShoppingCartWS/WCF/ShoppingCartWCF.svc?wsdl' using WS-Metadata Exchan
Error: Cannot import wsdl:portType
Detail: An exception was thrown while running a WSDL import extension: System.ServiceModel.Description.DataContractSerializerMessageCont
Error: Schema with target namespace '' could not be found.
XPath to Error Source: //wsdl:definitions[@targetNamespace='']/wsdl:portType[@name='IShoppingCart']


Error: Cannot import wsdl:binding
Detail: There was an error importing a wsdl:portType that the wsdl:binding is dependent on.
XPath to wsdl:portType: //wsdl:definitions[@targetNamespace='']/wsdl:portType[@name='IShoppingCart']
XPath to Error Source: //wsdl:definitions[@targetNamespace='http://tempuri.org/']/wsdl:binding[@name='WSHttpBinding_IShoppingCart']   

.....    

Error: Cannot import wsdl:binding
Detail: There was an error importing a wsdl:portType that the wsdl:binding is dependent on.
XPath to wsdl:portType: //wsdl:definitions[@targetNamespace='']/wsdl:portType[@name='IShoppingCart']
XPath to Error Source: //wsdl:definitions[@targetNamespace='http://tempuri.org/']/wsdl:binding[@name='BasicHttpBinding_IShoppingCart1']


Error: Cannot import wsdl:port
Detail: There was an error importing a wsdl:binding that the wsdl:port is dependent on.
XPath to wsdl:binding: //wsdl:definitions[@targetNamespace='http://tempuri.org/']/wsdl:binding[@name='BasicHttpBinding_IShoppingCart1']
XPath to Error Source: //wsdl:definitions[@targetNamespace='http://tempuri.org/']/wsdl:service[@name='ShoppingCartWCF']/wsdl:port[@name='BasicHttpBinding_IShoppingCart1']


Generating files...
Warning: No code was generated.
If you were trying to generate a client, this could be because the metadata documents did not contain any valid contracts or services
or because all contracts/services were discovered to exist in /reference assemblies. Verify that you passed all the metadata documents to the tool.

Warning: If you would like to generate data contracts from schemas make sure to use the /dataContractOnly option.

Answer 1

此Warning: No code was generated 错误消息可能由缺少C:\Windows\Temp 目录上的应用程序池用户的权限触发（是的，真的！）

如果您遇到此错误，如果您尝试使用“添加服务引用”对话框，我首先建议您切换到命令行。为您的服务 URL 打开 Fiddler 运行此命令。

 svcutil.exe https://dev.example.com/ShoppingCartWS/WCF/ShoppingCartWCF.svc?wsdl

如果您看到任何请求返回为 500（红色）和以下响应，那么您可能遇到与我相同的问题。

ReadResponse() failed: The server did not return a response for this request.                                                                            

只需检查C:\Windows\Temp 并添加您的应用程序池正在运行的任何用户以获得权限。我刚刚作弊并添加了Everyone，但如果安全很重要，您应该从 IIS 中找到正确的应用程序池用户名。

This is where I found the solution - many thanks!.