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wxapp-api-interceptors

v1.4.3

Published

微信小程序api拦截封装

Downloads

74

Readme

微信小程序api拦截器

  • 完美兼容原生小程序项目
  • 完美兼用小程序api的原本调用方式,无痛迁移
  • 小程序api全Promise化
  • 和axios一样的请求方式
  • 小程序api自定义拦截调用参数和返回结果
  • 强大的async拦截

快速开始

安装

npm install wxapp-api-interceptors --save

使用

mpvue等项目
import wxApiInterceptors from 'wxapp-api-interceptors';

wxApiInterceptors(); // 必须在调用小程序api之前调用
原生小程序和taro项目

下载该项目,解压移动文件夹distwxApiInterceptors.jsruntime.js文件到你自己的项目,详见示例

const wxApiInterceptors = require('./wxApiInterceptors');

wxApiInterceptors(); // 必须在调用小程序api之前调用

小程序api调用

不必传success、complete和fail参数。

函数式异步调用方式:
wx.showLoading({title: '登录中...'})
    .then(wx.login)
    .then(data => wx.request.post('/login', {data}))
    .then(() => wx.showToast({title: '登录成功'}))
    .catch(() => wx.showToast({title: '登录失败'}))
    .finally(wx.hideLoading);
也兼容原生的调用方式(不便维护):
wx.showLoading({
    title: '登录中...',
    success: () => {
        wx.login({
            success: (data) => {
                wx.request({
                    url: '/login',
                    data,
                    success: () => wx.showToast({title: '登录成功'}),
                    fail: () => wx.showToast({title: '登录失败'}),
                    complete: wx.hideLoading,
                });
            },
        });
    },
});

自定义拦截器

使用方法及参数:wxApiInterceptors({[api]: {[request](params):params, [response](res):res}}, [isReturn]: boolean)

比如拦截wx.showModal的confirmColor默认值为red,调用成功后并拦截调用成功返回的结果。

wxApiInterceptors({
    showModal: {
        request(params) {
            if (params.confirmColor === undefined) {
                params.confirmColor = 'red';
            }
            return params;
        },
        response(res) {
            res = '调用成功';
            return res;
        },
    }
});

wx.showModal({title: '测试'})
    .then(console.log);
// 控制的输出:调用成功

默认拦截了request api,封装成了和axios差不多的使用方式

调用wx.request[method](url, [config])发送axios化的请求。

默认GET请求
wx.request('https://test.com/banner')
    .then(({data}) => {
        console.log(data);
    })
其他请求方式
wx.request.post('https://test.com', {data: {userName: 'test'}})
    .then(({data}) => {
        console.log(data);
    })

当然也可以再继续拦截request api

比如设置request api默认的host:

wxApiInterceptors({
    request: {
        request(params) {
            const host = 'https://test.com'
            if (!/^(http|\/\/)/.test(params.url)) {
                params.url = host + params.url;
            }
            return params;
        },
    },
});

甚至可以拦截自己的业务状态码:

wxApiInterceptors({
    request: {
        response(res) {
            const {data: {code}} = res;
            // 如果data里的code等于-1就响应为失败
            if (code === -1) {
                return Promise.reject(res);
            }
            return res;
        },
    },
});

强大的async拦截器

比如调用request api的时候都在header里带上本地储存的token,没有的话从服务器获取:

wxApiInterceptors({
    request: {
        async request(params) {
            if (params.header === undefined) {
                params.header = {};
            }
            let token = wx.getStorageSync('token');
            if (!token) {
                ({data: token} = await wx.request('/getToken'));
                wx.setStorageSync('token', token);
            }
            params.header.token = token;
            return params;
        },
    },
});

原生小程序项目使用async需要特殊处理,请看示例

小程序基础版本2.0.8后的小程序,在后台配置了插件不能直接调用全局wx对象issues,需要在调用wxApiInterceptors({}, true)时传入第二个参数为true,会返回一个代理后的对象以供调用,请看示例