问题
I have WCF service that I need to access from ASP.NET Core. I have installed WCF Connected Preview and created proxy successfully.
It created interface & client something like below
[System.CodeDom.Compiler.GeneratedCodeAttribute("dotnet-svcutil", "0.3.0.0")]
[System.ServiceModel.ServiceContractAttribute(ConfigurationName="ServiceReference1.IDocumentIntegration")]
public interface IDocumentIntegration
{
[System.ServiceModel.OperationContractAttribute(Action="http://tempuri.org/IDocumentIntegration/SubmitDocument", ReplyAction="http://tempuri.org/IDocumentIntegration/SubmitDocumentResponse")]
[System.ServiceModel.FaultContractAttribute(typeof(ServiceReference1.FaultDetail), Action="http://tempuri.org/IDocumentIntegration/SubmitDocumentFaultDetailFault", Name="FaultDetail", Namespace="http://schemas.datacontract.org/2004/07/MyCompany.Framework.Wcf")]
System.Threading.Tasks.Task<string> SubmitDocumentAsync(string documentXml);
}
[System.CodeDom.Compiler.GeneratedCodeAttribute("dotnet-svcutil", "0.3.0.0")]
public interface IDocumentIntegrationChannel : ServiceReference1.IDocumentIntegration, System.ServiceModel.IClientChannel
{
}
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.CodeDom.Compiler.GeneratedCodeAttribute("dotnet-svcutil", "0.3.0.0")]
public partial class DocumentIntegrationClient : System.ServiceModel.ClientBase<ServiceReference1.IDocumentIntegration>, ServiceReference1.IDocumentIntegration
{
// constructors and methods here
}
The consumer class that calls the service looks like below
public class Consumer
{
private IDocumentIntegration _client;
public Consumer(IDocumentIntegration client)
{
_client = client;
}
public async Task Process(string id)
{
await _client.SubmitDocumentAsync(id);
}
}
How do I register the IDocumentIntegration with ConfigureServices method in Startup class? I want to setup RemoteAddress & clientCredentials during the registration
public void ConfigureServices(IServiceCollection services)
{
services.AddApplicationInsightsTelemetry(Configuration);
services.AddMvc();
// how do I inject DocumentIntegrationClient here??
var client = new DocumentIntegrationClient();
client.ClientCredentials.UserName.UserName = "myusername";
client.ClientCredentials.UserName.Password = "password";
client.Endpoint.Address = new EndpointAddress(urlbasedonenvironment)
}
回答1:
Using the factory method overload seems suitable use case for it.
services.AddScoped<IDocumentIntegration>(provider => {
var client = new DocumentIntegrationClient();
// Use configuration object to read it from appconfig.json
client.ClientCredentials.UserName.UserName = Configuration["MyService:Username"];
client.ClientCredentials.UserName.Password = Configuration["MyService:Password"];
client.Endpoint.Address = new EndpointAddress(Configuration["MyService:BaseUrl"]);
return client;
});
Where your appsettings would look like
{
...
"MyService" :
{
"Username": "guest",
"Password": "guest",
"BaseUrl": "http://www.example.com/"
}
}
Alternatively, inject the Options via options pattern. Since the DocumentIntegrationClient
is partial, you can create a new file and add a parameterized constructor.
public partial class DocumentIntegrationClient :
System.ServiceModel.ClientBase<ServiceReference1.IDocumentIntegration>, ServiceReference1.IDocumentIntegration
{
public DocumentIntegrationClient(IOptions<DocumentServiceOptions> options) : base()
{
if(options==null)
{
throw new ArgumentNullException(nameof(options));
}
this.ClientCredentials.Username.Username = options.Username;
this.ClientCredentials.Username.Password = options.Password;
this.Endpoint.Address = new EndpointAddress(options.BaseUrl);
}
}
And create a options class
public class DocumentServiceOptions
{
public string Username { get; set; }
public string Password { get; set; }
public string BaseUrl { get; set; }
}
and populate it from appsettings.json
.
services.Configure<DocumentServiceOptions>(Configuration.GetSection("MyService"));
来源:https://stackoverflow.com/questions/39732319/how-to-inject-wcf-service-client-in-asp-net-core