request.js
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import axios from 'axios'
import { Notify } from 'vant'
import { Loading } from 'element-ui'
import $store from '@/store'
import store from '@/store/modules/login'
import router from '@/router'
import NProgress from 'nprogress'
import 'nprogress/nprogress.css'
import { saveAs } from 'file-saver'
axios.defaults.timeout = 100000
let pending = [] //声明一个数组用于存储每个ajax请求的取消函数和ajax标识
let cancelToken = axios.CancelToken
let removePending = (ever) => {
for (let p in pending) {
if (
pending[p].u === ever.url + '&' + ever.method &&
pending[p].data === eval.data
) {
//当当前请求在数组中存在时执行函数体
pending[p].f() //执行取消操作
pending.splice(p, 1) //把这条记录从数组中移除
}
}
}
// 请求拦截(配置发送请求的信息)
axios.interceptors.request.use(
(config) => {
// 处理请求之前的配置
// let loadingInstance = Loading.service({ fullscreen: true }); //开始
NProgress.start() //开始
store.state.loadding = true //在请求发出之前进行一些操作
config.headers = config.headers || {}
if (config.headers && config.headers.constructor == String) {
try {
config.headers = JSON.parse(config.headers)
} catch (e) {
Message.error(`请求头部不是有效的JSON格式:${config.headers}`)
throw e
}
}
config.headers['Accept-Language'] = localStorage.getItem('lang') || 'zh-CN'
if (store.state.loginAccount) {
config.headers['Tenant-Code'] =
localStorage
.getItem(store.state.loginAccount + 'loginRoutePath')
.replace('/login/', '') || ''
}
const currentUser = store.state.currentUser
currentUser &&
currentUser.token &&
!config.headers.Authorization &&
(config.headers.Authorization = `Bearer ${currentUser.token}`)
//如果是请求auth接口,则不带token
if (config.url.indexOf('/auth?') != -1) {
delete config.headers.Authorization
}
if (config.url.indexOf('/sso/') != -1) {
delete config.headers.Authorization
}
removePending(config) //在一个ajax发送前执行一下取消操作
config.cancelToken = new cancelToken((c) => {
// 将请求的地址和请求的方式构建为一个字符串存放到请求数组中
pending.push({
u: config.url + '&' + config.method,
f: c,
data: config.data,
})
})
// 判断是否需要刷新token
let currentTime = new Date().getTime()
if (
currentUser &&
currentUser.loginTime &&
currentTime - currentUser.loginTime >=
(currentUser.expiration / 5) * 1000 &&
config.url.indexOf('/refresh') == -1
) {
$store.dispatch('login/refreshAndGetAuthenticationToken')
}
return config
},
(error) => {
// 请求失败的处理
NProgress.done() // 结束
// loadingInstance.close(); // 结束
return Promise.reject(error)
}
)
// 响应拦截(配置请求回来的信息)
axios.interceptors.response.use(
(res) => {
// 处理响应数据
// let loadingInstance = Loading.service({ fullscreen: true }); //开始
let isShowMessage =
res.config.isShowMessage !== undefined ? res.config.isShowMessage : true
removePending(res.config) //在一个ajax响应后再执行一下取消操作,把已经完成的请求从pending中移除
if (
res.data &&
res.data.state != undefined &&
res.data.state === false &&
isShowMessage
) {
Notify({ type: 'danger', message: res.data.message })
}
store.state.loadding = false //在这里对返回的数据进行处理
// loadingInstance.close(); // 结束
NProgress.done() // 结束
// 附件下载
if (
res &&
res.status == 200 &&
res.headers &&
res.headers['content-disposition'] &&
res.headers['content-disposition'].startsWith('attachment;')
) {
let blob = new Blob([res.data])
const fileName = decodeURIComponent(
res.headers['content-disposition'].split(';')[1].split('filename=')[1]
)
saveAs(blob, fileName)
}
return res
},
(error) => {
// 处理响应失败
let loadingInstance = Loading.service({ fullscreen: true }) //开始
const errorMessage =
error &&
error.response &&
error.response.data &&
error.response.data.message
? error.response.data.message
: error.message
if (error && error.response && error.response.status === 401) {
$store.dispatch('login/clearCurrentUser')
router.push({ path: '/login' })
} else if (error && error.response && error.response.status === 403) {
Notify({ type: 'danger', message: errorMessage })
} else if (error && error.response && error.response.status === 500) {
if (error.response.data && error.response.data.message) {
//如果是jwt超时了
if (error.response.data.message.indexOf('JWT expired at') >= 0) {
Notify({ type: 'warning', message: '登录认证超时,请重新登录!' })
} else {
Notify({ type: 'danger', message: error.response.data.message })
}
} else {
Notify({ type: 'danger', message: error.message })
}
} else if (errorMessage && typeof errorMessage != 'undefined') {
//如果是jwt超时了
if (errorMessage.indexOf('JWT expired at') >= 0) {
Notify({ type: 'warning', message: '登录认证超时,请重新登录!' })
} else {
Notify({ type: 'danger', message: errorMessage })
}
}
NProgress.done() // 结束
loadingInstance.close() // 结束
return Promise.reject(error)
}
)
export default {
request(data) {
let reqData = data.data || {}
//支持表达式作为域名解析
data.url = this.parseUrl(data.url)
//统一拼接域名接口
if (data.url.indexOf('http') == -1) {
data.url = context.mobile + data.url
}
let requestData = {
url: data.url,
data: reqData,
method: data.method || 'GET',
params: data.params || {},
onUploadProgress: data.onUploadProgress || null,
headers: data.headers || '',
responseType: data.responseType || 'json',
isShowMessage: data.isShowMessage,
}
return axios(requestData)
},
download(url) {
return this.request({ url, responseType: 'arraybuffer' })
},
get(url, type, isShowMessage) {
return this.request({
url,
responseType: type,
isShowMessage: isShowMessage,
})
},
post(url, data, responseType) {
return this.request({
url,
data,
method: 'POST',
responseType: responseType,
})
},
remove(url) {
return this.request({ url, method: 'DELETE' })
},
getContext() {
return context
},
parseUrl(url) {
if (url === '') return
var ctx = this.getContext(),
reg = /^(\$\{(\w+)\})\/.*$/
var match = reg.exec(url)
if (match != null) {
var name = match[2],
mc = match[1],
val = ctx[name]
if (!val) {
throw new Error(
"The '" +
name +
"' in url:" +
url +
' does not defined in context provider.'
)
}
return url.replace(mc, val)
} else {
return url
}
},
}