2022-06-02 17:59:57 +08:00
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import errorCode from '@/utils/request/errorCode'
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import { refreshToken } from '@/api/auth'
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// 需要忽略的提示。忽略后,自动 Promise.reject('error')
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const ignoreMsgs = [
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'无效的刷新令牌', // 刷新令牌被删除时,不用提示
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'刷新令牌已过期' // 使用刷新令牌,刷新获取新的访问令牌时,结果因为过期失败,此时需要忽略。否则,会导致继续 401,无法跳转到登出界面
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]
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// 请求队列
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let requestList = []
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// 是否正在刷新中
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let isRefreshToken = false
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/**
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* 响应拦截
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* @param {Object} http
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*/
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module.exports = vm => {
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uni.$u.http.interceptors.response.use(
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async res => {
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const code = res.data.code || 0
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const msg = res.data.msg || errorCode[code] || errorCode['default']
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if (ignoreMsgs.indexOf(msg) !== -1) {
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// 如果是忽略的错误码,直接返回 msg 异常
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return Promise.reject(msg)
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} else if (code === 401) {
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// 如果未认证,并且未进行刷新令牌,说明可能是访问令牌过期了
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if (!isRefreshToken) {
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isRefreshToken = true
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// 1. 如果获取不到刷新令牌,则只能执行登出操作
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2023-01-06 16:55:55 +08:00
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if (!vm.$store.getters.refreshToken) {
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2022-06-02 17:59:57 +08:00
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vm.$store.commit('CLEAR_LOGIN_INFO')
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return Promise.reject(res)
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}
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// 2. 进行刷新访问令牌
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try {
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const refreshTokenRes = await refreshToken()
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// 2.1 刷新成功,则回放队列的请求 + 当前请求
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vm.$store.commit('SET_TOKEN', refreshTokenRes.data)
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requestList.forEach(cb => cb())
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return uni.$u.http.request(res.config)
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} catch (e) {
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// 为什么需要 catch 异常呢?刷新失败时,请求因为 Promise.reject 触发异常。
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// 2.2 刷新失败,只回放队列的请求
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requestList.forEach(cb => cb())
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// 登出。即不回放当前请求!不然会形成递归
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vm.$store.commit('CLEAR_LOGIN_INFO')
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return Promise.reject(res)
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} finally {
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requestList = []
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isRefreshToken = false
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}
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} else {
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// 添加到队列,等待刷新获取到新的令牌
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return new Promise(resolve => {
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requestList.push(() => {
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res.config.header.Authorization = 'Bearer ' + vm.$store.getters.accessToken // 让每个请求携带自定义token 请根据实际情况自行修改
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resolve(uni.$u.http.request(res.config))
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})
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})
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}
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} else if (code === 500) {
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uni.$u.toast(msg)
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return Promise.reject(res)
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} else if (code === 901) {
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uni.$u.toast('演示模式,无法进行写操作')
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return Promise.reject(res)
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} else if (code !== 0) {
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if (msg === '无效的刷新令牌') {
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// hard coding:忽略这个提示,直接登出
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console.log(msg)
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} else {
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uni.$u.toast(msg)
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}
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return Promise.reject(res)
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} else {
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return res.data
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}
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},
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err => {
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console.log(err)
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let { message } = err
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if (!message) {
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message = '系统发生未知错误'
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}else if (message === 'Network Error') {
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message = '后端接口连接异常'
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} else if (message.includes('timeout')) {
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message = '系统接口请求超时'
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} else if (message.includes('Request failed with status code')) {
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message = '系统接口' + message.substring(message.length - 3) + '异常'
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}
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uni.$u.toast(message)
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return Promise.reject(err)
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}
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)
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}
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