我想创建一个实现2个服务契约的类,并在不同的端口上公开2个端点(我将端口作为程序的输入)。
我的问题与this question非常相似,但我希望每个端点上有两个端点。
修改
使用此代码:
var aConnectionString = "http://localhost:8200/A";
var bConnectionString = "http://localhost:8201/B";
ServiceHost host= new ServiceHost(typeof(abImp));
var binding = new BasicHttpBinding();
host.AddServiceEndpoint(typeof(A), binding, aConnectionString);
host.AddServiceEndpoint(typeof(B), binding, bConnectionString);
{
// Check to see if the service host already has a ServiceMetadataBehavior
ServiceMetadataBehavior smb = host.Description.Behaviors.Find<ServiceMetadataBehavior>();
// If not, add one
if (smb == null)
smb = new ServiceMetadataBehavior();
smb.HttpGetEnabled = true;
smb.MetadataExporter.PolicyVersion = PolicyVersion.Policy15;
host.Description.Behaviors.Add(smb);
host.AddServiceEndpoint(
ServiceMetadataBehavior.MexContractName,
MetadataExchangeBindings.CreateMexHttpBinding(),
aConnectionString
);
}
host.Open();
我在host.Open()操作中收到此错误消息:
An unhandled exception of type 'System.InvalidOperationException' occurred in System.ServiceModel.dll
Additional information: A binding instance has already been associated to listen URI 'http://localhost:8200/A'. If two endpoints want to share the same ListenUri, they must also share the same binding object instance. The two conflicting endpoints were either specified in AddServiceEndpoint() calls, in a config file, or a combination of AddServiceEndpoint() and config.
解
var aConnectionString = "http://localhost:" + portA+ "/A";
var bConnectionString = "http://localhost:" + portB+ "/B";
ServiceHost aHost = new ServiceHost(instance, new Uri(aConnectionString));
ServiceHost bHost = new ServiceHost(instance, new Uri(bConnectionString));
aHost.Description.Behaviors.Find<ServiceBehaviorAttribute>().InstanceContextMode = InstanceContextMode.Single;
bHost.Description.Behaviors.Find<ServiceBehaviorAttribute>().InstanceContextMode = InstanceContextMode.Single;
aHost.AddServiceEndpoint(typeof(A), new BasicHttpBinding(), aConnectionString);
bHost.AddServiceEndpoint(typeof(B), new BasicHttpBinding(), bConnectionString);
{
// Check to see if the service host already has a ServiceMetadataBehavior
var smb = aHost.Description.Behaviors.Find<ServiceMetadataBehavior>() ?? new ServiceMetadataBehavior();
aHost.Description.Behaviors.Add(smb);
aHost.AddServiceEndpoint(
ServiceMetadataBehavior.MexContractName,
MetadataExchangeBindings.CreateMexHttpBinding(),
aConnectionString + "/Mex"
);
}
{
// Check to see if the service host already has a ServiceMetadataBehavior
var smb = bHost.Description.Behaviors.Find<ServiceMetadataBehavior>() ?? new ServiceMetadataBehavior();
bHost.Description.Behaviors.Add(smb);
bHost.AddServiceEndpoint(
ServiceMetadataBehavior.MexContractName,
MetadataExchangeBindings.CreateMexHttpBinding(),
bConnectionString + "/Mex"
);
}
aHost.Open();
bHost.Open();
答案 0 :(得分:0)
鉴于你想要两个完全不同的地址,只有相同的实现类,我建议使用两个不同的 ServiceHost
实例。