# Axios

> 原文：[https://docs.gitlab.com/ee/development/fe_guide/axios.html](https://docs.gitlab.com/ee/development/fe_guide/axios.html)

*   [CSRF token](#csrf-token)
*   [Usage](#usage)
*   [Mock Axios response in tests](#mock-axios-response-in-tests)
    *   [Example](#example)
    *   [Mock poll requests in tests with Axios](#mock-poll-requests-in-tests-with-axios)

# Axios[](#axios "Permalink")

我们使用[Axios](https://github.com/axios/axios)在 Vue 应用程序和大多数新代码中与服务器进行通信.

为了确保设置了所有默认值，您不应*直接使用 Axios* ，而应从`axios_utils`导入 Axios.

## CSRF token[](#csrf-token "Permalink")

我们所有的请求都需要 CSRF 令牌. 为了确保设置此令牌，我们将导入[Axios](https://github.com/axios/axios) ，设置令牌并导出`axios` .

应该使用此导出模块，而不是直接使用 Axios 以确保已设置令牌.

## Usage[](#usage "Permalink")

```
 import axios from './lib/utils/axios_utils';

  axios.get(url)
    .then((response) => {
      // `data` is the response that was provided by the server
      const data = response.data;

      // `headers` the headers that the server responded with
      // All header names are lower cased
      const paginationData = response.headers;
    })
    .catch(() => {
      //handle the error
    }); 
```

## Mock Axios response in tests[](#mock-axios-response-in-tests "Permalink")

为了帮助我们模拟响应，我们使用[axios-mock-adapter](https://github.com/ctimmerm/axios-mock-adapter) .

比[`spyOn()`](https://jasmine.github.io/api/edge/global.html#spyOn)优势：

*   无需创建响应对象
*   不允许通话（我们要避免）
*   简单的 API 来测试错误情况
*   提供`replyOnce()`以允许不同的响应

我们还决定不使用[Axios 拦截器，](https://github.com/axios/axios#interceptors)因为它们不适合模拟.

### Example[](#example "Permalink")

```
 import axios from '~/lib/utils/axios_utils';
  import MockAdapter from 'axios-mock-adapter';

  let mock;
  beforeEach(() => {
    // This sets the mock adapter on the default instance
    mock = new MockAdapter(axios);
    // Mock any GET request to /users
    // arguments for reply are (status, data, headers)
    mock.onGet('/users').reply(200, {
      users: [
        { id: 1, name: 'John Smith' }
      ]
    });
  });

  afterEach(() => {
    mock.restore();
  }); 
```

### Mock poll requests in tests with Axios[](#mock-poll-requests-in-tests-with-axios "Permalink")

因为轮询功能需要一个标头对象，所以我们需要始终包含一个对象作为第三个参数：

```
 mock.onGet('/users').reply(200, { foo: 'bar' }, {}); 
```