我正在尝试对我的Azure API客户端进行重做,以对HttpClient
使用单例ServiceClient<T>
,因为建议使用多个来源(出于性能考虑,对于HttpClient
也建议使用此方法Microsoft.Rest.ServiceClient
(通常)在幕后使用)
我正在使用Microsoft.Rest.ClientRuntime.2.3.12版本
我看到Microsoft.Rest.ServiceClient具有用于重用HttpClient
protected ServiceClient(HttpClient httpClient, bool disposeHttpClient = true);
这是我的API客户端的构造函数,用于重用 HttpClient,但是在调用它时会失败,并显示System.MissingMethodException
: Void Microsoft.Rest.ServiceClient`1。 ctor(System.Net.Http.HttpClient,布尔)
public MyAPIclient(ServiceClientCredentials credentials, HttpClient client)
: base(client, disposeHttpClient: false)
{
this._baseUri = new Uri("https://...");
if (credentials == null)
{
throw new ArgumentNullException("credentials");
}
this.Credentials = credentials;
Credentials?.InitializeServiceClient(this);
}
这就是我调用API客户端的方式
using (var apiClient = new MyAPIclient(credentials, HttpClientSingleton.Client))
//I get Method not found 'Void Microsoft.Rest.ServiceClient`1..ctor(System.Net.Http.HttpClient, Boolean)'
{
//some api call
}
这是我实例化我的http客户端单例的方式
public static class HttpClientSingleton
{
public static readonly HttpClient Client = new HttpClient() { Timeout = TimeSpan.FromMinutes(30) };
}
为什么会出现此异常(我看到ServiceClient
有 ctor(httpClient, bool)
)?
如何解决此问题?
答案 0 :(得分:1)
就像Nkosi所说的那样,您应该尝试还原nuget软件包,清除obj / bin并重建。这通常在事情变得步履蹒跚时发生。随着所有的阴影缓存等,事情可能最终不匹配。我根据您的代码创建了一个小示例,它没有任何问题。如果发现仍然无法使用,则应在文件中包含更多信息,例如类声明和using语句,以及所使用的.net版本。
以下内容对我来说适用于4.5.2 ServiceClient 2.3.12
using Microsoft.Rest;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApp2
{
class Program
{
static void Main(string[] args)
{
using (var apiClient = new MyAPIclient(null, HttpClientSingleton.Client))
//I get Method not found 'Void Microsoft.Rest.ServiceClient`1..ctor(System.Net.Http.HttpClient, Boolean)'
{
var httpClient = apiClient.HttpClient;
}
}
public class MyAPIclient : ServiceClient<MyAPIclient>
{
protected Uri _baseUri { get; set; }
protected ServiceClientCredentials Credentials { get; set; }
public MyAPIclient(ServiceClientCredentials credentials, HttpClient client) : base(client, disposeHttpClient: false)
{
this._baseUri = new Uri("https://stackoverflow.com");
this.Credentials = credentials;
if(credentials != null)
Credentials?.InitializeServiceClient(this);
}
}
public static class HttpClientSingleton
{
public static readonly HttpClient Client = new HttpClient() { Timeout = TimeSpan.FromMinutes(30) };
}
}
}