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sx-fetch-rjl

v9.0.14

Published

基于 axios 的网络请求库

Readme

sx-fetch

基于axios的前端网络请求库。

安装

npm:

$ npm install sx-fetch --save

yarn:

$ yarn add sx-fetch

使用

初始化:

import fetch from 'sx-fetch';

fetch.init({
    setOptions: (instance) => {
        instance.defaults.baseURL = 'http://localhost:8080/';   // 接口地址
        instance.defaults.timeout = 10000;  // 请求超时时间,默认为10000毫秒
        instance.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded;charset=UTF-8';  // 设置headers,默认设置了post['Content-Type']
        // instance.interceptors  // 拦截请求
    },
    onShowErrorTip: (err, errorTip) => {
        // 请求失败时调用,errorTip 为提示语。
    },
    onShowSuccessTip: (response, successTip) => {
        // 请求成功时调用,successTip 为提示语。
    },
    isMock: (url, data, method, options) => {
        // mock
    },
});

sx-fetch 0.2.1 版本及以上支持以下写法。

fetch.init({
    baseURL: 'http://localhost:8080/';
    timeout: 10000;
    headers: {
        auth_token: AUTH_TOKEN,
    },
    onShowErrorTip: () => {...},
    onShowSuccessTip: () => {...},
    isMock: () => {...},
});

初始化时如果需要配置 interceptors,仍需使用 setOptions 方法。

instance.interceptors 请参考 axios#interceptors 用法。 默认处理方法如下:

instance.interceptors.request.use(cfg => {
    return cfg;
}, error => {
    return Promise.reject(error);
});

instance.interceptors.response.use(response => {
    return response;
}, error => {
    return Promise.reject(error);
});

发送请求:

fetch.get('/user').then(user => {
    console.log(user);
}).catch(err => {
    console.log(err);
}).finally(()  => {
    console.log('请求完成'); // 无论请求成功或失败都会执行。
});

创建新的fetch实例

需要 sx-fetch 版本 >= 0.2.1

应用中有时需要同时使用不同的fetch配置,例如需要请求多个服务器。这时可以使用 create 方法创建新的fetch实例。

fetch.create([options])
const instance = fetch.create();

新创建的fetch实例 instance 的行为与默认的fetch实例完全相同,你可以使用 init 方法初始化该实例. 还可以在创建实例的同时传入配置参数。

instance.init({
    baseURL: 'http://localhost:8080',
    ...
})

还可以在创建实例的同时传入配置参数。

const instance = fetch.create({
    baseURL: 'http://localhost:8080',
    ...
});

通过 defaults 属性设置fetch实例的配置信息

需要 sx-fetch 版本 >= 0.2.1

fetch.defaults.baseURL = 'http://localhost:8080';
fetch.defaults.timeout = 10000;
fetch.defaults.headers.common['auth_token'] = AUTH_TOKEN;

可以给指定实例设置配置信息

const instance = fetch.create();

instance.defaults.baseURL = 'http://localhost:8080';
...

mock请求使用 mockDefaults 属性来配置。

fetch.mockDefaults.baseURL = 'http://localhost:8080';
...

sx-fetch API

请求方法

fetch.get(url[, params[, options]])
fetch.post(url[, params[, options]])
fetch.del(url[, params[, options]])
fetch.put(url[, params[, options]])
fetch.patch(url[, params[, options]])
fetch.singleGet(url[, params[, options]])

| Param | Description | Type | Default | | --- | --- | --- | --- | | [url] | 接口地址 | String | / | | [params] | 请求参数对象(get 请求参数会自定追加到url后。) | Object | {} | | [options] | 配置参数 | Object | {} | | [options.errorTip] | 请求失败的提示信息 | String | Boolean | get: '获取数据失败!'、 post: '操作失败!' | | [options.successTip] | 请求成功的提示信息 | String | Boolean | false | | [options.timeout] | 请求超时时间(ms) | Number | 10000 |

options 详细配置参数参考 axios#request-config;

并发请求

需要 sx-fetch 版本 >= 0.2.1

同时发起多个请求,全部请求完成之后再执行回调。 可以使用 Promise.all() 方法,sx-fetch 也内置了 all 方法。

fetch.all(iterable)
const getUser = fetch.get('/user');
const getList = fetch.get('/list');

fetch.all([getUser, getList]).then(([user, list]) => {
    console.log(user, list);
});

react 组件装饰器

使用装饰器方法 inject 将fetch注入到react组件的props中。当组件销毁时,未完成的请求会被中断。

注意:注入到react组件内的fetch实例只包含网络请求的方法,不包含其他方法及属性。

@fetch.inject([options])

| Param | Description | Type | Default | | --- | --- | --- | --- | | [options] | | Object | {} | | [options.propName] | 注入props的属性名 | String | $fetch |

import React, {Component} from 'react';
import fetch from 'sx-fetch';

@fetch.inject()
class Comps extends Component {
    getUser() {
        const {$fetch} = this.props;
        $fetch.get('/user').then(user => {
            console.log(user);
        });
    }
    ...
}

注入多个fetch实例必须传入 propName ,否则props中的fetch实例会被覆盖。

const instance = fetch.create();

@fetch.inject()
@instance.inject({propName: '$instance'})
class Comps extends Component {
    getUser() {
        const {$fetch} = this.props;

        $fetch.get('/user').then(user => {...});
        $instance.get('/user').then(() => {...});
    }
    ...
}