一个基于 Fetch API 封装的 HTTP Client,可用于浏览器及其他兼容环境中,设计之初是为了ReactJS和ReactNative访问后端RestAPI使用。比其他基于Fetch API的封装优势在于,它的中间件机制支持对请求和应答进行异步处理。
安装:
npm install fetch-http-client --save
使用:
import FetchHttpClient, { json } from 'fetch-http-client'; // Create a new client object. const client = new FetchHttpClient('http://api.example.com/endpoint'); // Add access token client.addMiddleware(request => { request.options.headers['X-Access-Token'] = 'secret'; }); // Add json support client.addMiddleware(json()); // Add Logging client.addMiddleware(request => response => { console.log(request, response); }); // Fire request. client.get('test').then(response => console.log(response.jsonData)); // Path variables support. client.get('users/{id}', { uriParams: { id: 1 } }).then(response => console.log(response.jsonData));
预处理异步请求的中间件示例,从存储中异步读取accessToken,并添加到请求头中:
// Add access token asynchronously client.addMiddleware(request => { return AsynchronousStorage.fetch('accessToken').then(token => { request.options.headers['X-Access-Token'] = token; return request; }); });