# 第三方ClientCredential模式调用

#### 任务10：第三方ClientCredential模式调用 <a href="#ren-wu-10-di-san-fang-clientcredential-mo-shi-tiao-yong" id="ren-wu-10-di-san-fang-clientcredential-mo-shi-tiao-yong"></a>

创建一个控制台程序

```
dotnet new console --name ThirdPartyDemo
```

添加 Nuget 包：IdentityModel

添加之后还原

```
dotnet restore
```

Client

```
using System;
using System.Net.Http;
using System.Threading.Tasks;
using IdentityModel.Client;
using Newtonsoft.Json.Linq;

namespace ThirdPartyDemo
{
    class Program
    {
        static async Task Main(string[] args)
        {
            // discover endpoints from metadata
            var client = new HttpClient();
            var disco = client.GetDiscoveryDocumentAsync("http://localhost:5000").Result;
            if (disco.IsError)
            {
                Console.WriteLine(disco.Error);
                return;
            }

            // request token
            var tokenResponse = await client.RequestClientCredentialsTokenAsync(new ClientCredentialsTokenRequest
            {
                Address = disco.TokenEndpoint,

                ClientId = "client",
                ClientSecret = "secret",
                Scope = "api"
            });

            if (tokenResponse.IsError)
            {
                Console.WriteLine(tokenResponse.Error);
                return;
            }

            Console.WriteLine(tokenResponse.Json);

            // call api
            var client2 = new HttpClient();
            client2.SetBearerToken(tokenResponse.AccessToken);

            var response = await client2.GetAsync("http://localhost:5001/weatherforecast");
            if (!response.IsSuccessStatusCode)
            {
                Console.WriteLine(response.StatusCode);
            }
            else
            {
                var content = await response.Content.ReadAsStringAsync();
                Console.WriteLine(JArray.Parse(content));
            }
        }
    }
}

```

先启动 IdentityServerCenter，ClientCredentialApi

再启动 ThirdPartyDemo，输出如下：

```
{
  "access_token": "eyJhbGciOiJSUzI1NiIsImtpZCI6ImZFd0d5VGQtY2FkaE9Oamp6ajc5THciLCJ0eXAiOiJhdCtqd3QifQ.eyJuYmYiOjE1ODYyNzcwNTYsImV4cCI6MTU4NjI4MDY1NiwiaXNzIjoiaHR0cDovL2xvY2FsaG9zdDo1MDAwIiwiYXVkIjoiYXBpIiwiY2xpZW50X2lkIjoiY2xpZW50Iiwic2NvcGUiOlsiYXBpIl19.KRgYum2zuAdqNkzm9rMfIh7ARMPJHLZw_k55AU-wxQEYfhc6ZAiJkayRY98gKJb--nvblpBTE4u5erJNUSBBGXriMsohemvVh-8pA72PkVzNJ9KuDAUX3VagsphQ36-ZEf7lq1V87y0Fh3higUsFTeyEa8D1pZQncS6GzlRel-Q7ghX20tVl0pWdvN1BnG06AdU9-1l15OoKg9aDRL9oKf4MO9zvJhJhmXazigvrWTKEcTk7gUVs-NW8rxBwNagTC386vVSatd5qmAhph4eDA8Ryjf9utE8qEDD6cuX2qFJn0yKxpFm2zn9AMUs5YmKMesUddKeocdk9DAIXIdqehw",
  "expires_in": 3600,
  "token_type": "Bearer",
  "scope": "api"
}
[
  {
    "date": "2020-04-09T00:30:56.3318938+08:00",
    "temperatureC": -12,
    "temperatureF": 11,
    "summary": "Hot"
  },
  {
    "date": "2020-04-10T00:30:56.3328057+08:00",
    "temperatureC": 2,
    "temperatureF": 35,
    "summary": "Cool"
  },
  {
    "date": "2020-04-11T00:30:56.3328097+08:00",
    "temperatureC": 27,
    "temperatureF": 80,
    "summary": "Sweltering"
  },
  {
    "date": "2020-04-12T00:30:56.33281+08:00",
    "temperatureC": 35,
    "temperatureF": 94,
    "summary": "Balmy"
  },
  {
    "date": "2020-04-13T00:30:56.3328102+08:00",
    "temperatureC": 23,
    "temperatureF": 73,
    "summary": "Mild"
  }
]
```

#### 参考文档： <a href="#can-kao-wen-dang" id="can-kao-wen-dang"></a>

<http://docs.identityserver.io/en/latest/quickstarts/1_client_credentials.html#creating-the-client>