有时会遇到这样的情况，使用axios发出的一些请求被指向不接受授权标头的端点。因此，只在允许的域上设置授权头的另一种方法如下例所示。将以下函数放置在每次React应用程序运行时执行的任何文件中，例如在路由文件中。

export default () => {
    axios.interceptors.request.use(function (requestConfig) {
        if (requestConfig.url.indexOf(<ALLOWED_DOMAIN>) > -1) {
            const token = localStorage.token;
            requestConfig.headers['Authorization'] = `Bearer ${token}`;
        }

        return requestConfig;
    }, function (error) {
        return Promise.reject(error);
    });

}

export const authHandler = (config) => {
  const authRegex = /^\/apiregex/;

  if (!authRegex.test(config.url)) {
    return store.fetchToken().then((token) => {
      Object.assign(config.headers.common, { Authorization: `Bearer ${token}` });
      return Promise.resolve(config);
    });
  }
  return Promise.resolve(config);
};

axios.interceptors.request.use(authHandler);

在尝试实现类似的东西时遇到了一些陷阱，基于这些答案，这是我想出的。我遇到的问题是:

If using axios for the request to get a token in your store, you need to detect the path before adding the header. If you don't, it will try to add the header to that call as well and get into a circular path issue. The inverse of adding regex to detect the other calls would also work If the store is returning a promise, you need to return the call to the store to resolve the promise in the authHandler function. Async/Await functionality would make this easier/more obvious If the call for the auth token fails or is the call to get the token, you still want to resolve a promise with the config

重点是在每个请求的拦截器上设置令牌

import axios from "axios";
    
const httpClient = axios.create({
    baseURL: "http://youradress",
    // baseURL: process.env.APP_API_BASE_URL,
});

httpClient.interceptors.request.use(function (config) {
    const token = localStorage.getItem('token');
    config.headers.Authorization =  token ? `Bearer ${token}` : '';
    return config;
});

尝试像下面这样创建一个新实例

var common_axios = axios.create({
    baseURL: 'https://sample.com'
});

// Set default headers to common_axios ( as Instance )
common_axios.defaults.headers.common['Authorization'] = AUTH_TOKEN;
// Check your Header
console.log(common_axios.defaults.headers);

如何使用

common_axios.get(url).......
common_axios.post(url).......

创建axios实例:

// Default config options
  const defaultOptions = {
    baseURL: <CHANGE-TO-URL>,
    headers: {
      'Content-Type': 'application/json',
    },
  };

  // Create instance
  let instance = axios.create(defaultOptions);

  // Set the AUTH token for any request
  instance.interceptors.request.use(function (config) {
    const token = localStorage.getItem('token');
    config.headers.Authorization =  token ? `Bearer ${token}` : '';
    return config;
  });

然后，对于任何请求，将从localStorage中选择令牌，并将其添加到请求头中。

我在整个应用程序中使用相同的实例:

import axios from 'axios';

const fetchClient = () => {
  const defaultOptions = {
    baseURL: process.env.REACT_APP_API_PATH,
    method: 'get',
    headers: {
      'Content-Type': 'application/json',
    },
  };

  // Create instance
  let instance = axios.create(defaultOptions);

  // Set the AUTH token for any request
  instance.interceptors.request.use(function (config) {
    const token = localStorage.getItem('token');
    config.headers.Authorization =  token ? `Bearer ${token}` : '';
    return config;
  });

  return instance;
};

export default fetchClient();

类似地，我们有一个函数来从调用中设置或删除令牌，如下所示:

import axios from 'axios';

export default function setAuthToken(token) {
  axios.defaults.headers.common['Authorization'] = '';
  delete axios.defaults.headers.common['Authorization'];

  if (token) {
    axios.defaults.headers.common['Authorization'] = `${token}`;
  }
}

我们总是在初始化时清除现有的令牌，然后建立接收到的令牌。