namespace VMProvisionEXE { class EXEWrapper { static void Main(string[] args) { WSHttpBinding myBinding = new WSHttpBinding(); myBinding.Security.Mode = SecurityMode.None; Uri baseAddress = new Uri("http://bernard3:8000/VMWareProvisioning/Service"); ServiceHost selfHost = new ServiceHost(typeof(VMPService),baseAddress); try { selfHost.AddServiceEndpoint(typeof(IVMProvisionCore),myBinding,"CoreServices"); ServiceMetadataBehavior smb = new ServiceMetadataBehavior(); smb.HttpGetEnabled = true; smb.MetadataExporter.PolicyVersion = PolicyVersion.Policy12; selfHost.Description.Behaviors.Add(smb); // Add MEX endpoint selfHost.AddServiceEndpoint(ServiceMetadataBehavior.MexContractName,MetadataExchangeBindings.CreateMexHttpBinding(),"mex"); selfHost.Open(); Console.WriteLine("The service is ready."); Console.ReadLine();
其余的C#代码;上面的类VMPService实现了VMProvisionCore.IVMProvisionCore.
namespace VMProvisionCore { [ServiceContract(Namespace = "http://Cisco.VMProvision.Core",ProtectionLevel = System.Net.Security.ProtectionLevel.None)] public interface IVMProvisionCore { [OperationContract] bool AuthenticateUser(string username,string password); }
我可以轻松创建使用此服务的Visual Studio 2008客户端应用程序.没问题.但是使用Delphi 2007是一个不同的问题.我可以使用Delphi中的WSDL导入器从(在这种情况下)检索WSDL http://bernard3:8000/VMWareProvisioning/Service?wsdl导入单元编译得很好.我必须手动初始化代理,因为WSDL不包含URL(注意C#代码中显示的额外“/ CoreServices”):
var Auth: AuthenticateUser; AuthResponse: AuthenticateUserResponse; CoreI: IVMProvisionCore; begin CoreI:= GetIVMProvisionCore(False,'http://bernard3:8000/VMWareProvisioning/Service/CoreServices'); Auth:= AuthenticateUser.Create; try Auth.username:= 'test'; Auth.password:= 'test'; AuthResponse:= CoreI.AuthenticateUser(Auth); finally FreeAndNIL(Auth); end;
上面的代码在遇到“CoreI.AuthenticateUser(Auth);”时会产生错误.错误是“无法处理消息,因为内容类型’text / xml; charset =”utf-8“不是预期类型’application / soap xml; charset = utf-8.”
我怀疑我在某处有一个愚蠢的小错误,可能是在导入WSDL或连接选项之类的时候.有人可以帮忙吗?
解决方法
C#方:
使用BasicHttpBinding而不是WSHttpBinding.
修复第1步
BasicHttpBinding myBinding = new BasicHttpBinding(); myBinding.Security.Mode = BasicHttpSecurityMode.None;
此更改将解决Delphi端的application / soap xml错误.
Delphi 2007方面:
针对修改后的C#Web服务运行现在将生成如下错误:
Exception class ERemotableException
with message ‘The message with Action
” cannot be processed at the
receiver,due to a ContractFilter
mismatch at the EndpointDispatcher.
This may be because of either a
contract mismatch (mismatched Actions
between sender and receiver) or a
binding/security mismatch between the
sender and the receiver. Check that
sender and receiver have the same
contract and the same binding
(including security requirements,e.g.
Message,Transport,None).’
要解决此问题,请将SOAPActions添加到所有支持的接口.这是我的代码中的示例;这必须在import-from-WSDL-PAS-file的初始化部分所做的所有InvRegistry更改之后完成:
修复第2步
InvRegistry.RegisterDefaultSOAPAction(TypeInfo(IVMProvisionCore),'http://Cisco.VMProvision.Core/CoreServices/%operationName%');
类型名称和URL应该可以从Delphi生成的WSDL导入文件和/或实际WSDL的检查中获得.上面的例子是我自己的项目.这些代码更改后,您将出错:
Exception class ERemotableException
with message ‘The formatter threw an
exception while trying to deserialize
the message: Error in deserializing
body of request message for
operation….
通过添加以下代码(信用到http://www.bobswart.nl/weblog/Blog.aspx?RootId=5:798)解决此错误.同样,这个新代码必须在WSDL-to-PAS文件初始化之后的所有InvRegistry之后.
修复第3步
InvRegistry.RegisterInvokeOptions(TypeInfo(IVMProvisionCore),ioDocument);
此时,数据包将在Delphi和C#之间来回传递 – 但参数将无法正常工作. C#将接收所有参数作为空值,Delphi似乎没有正确接收响应参数.最后的代码步骤是使用稍微定制的THTTPRIO对象,该对象将允许文字参数.这部分的技巧是确保在获得接口后应用该选项;之前这样做是行不通的.这是我的例子中的代码(只是片段).
修复第4步
var R: THTTPRIO; C: IVMProvisionCore; begin R:= THTTPRIO.Create(NIL); C:= GetIVMProvisionCore(False,TheURL,R); R.Converter.Options:= R.Converter.Options + [soLiteralParams];
现在 – 我的Delphi 2007应用程序可以与C#,独立,非IIS,WCF Web服务进行通信!