Vue encapsulates Axios to the full version of the calling interface (code source code)

First take a look at the directory you need to create , There are mainly api , utils Of request.js , main.js , vue.config.js ,view below first.vue, Here's the picture , Pay attention to the picture api Below request.js Change to api.js file name

1. Global installation axios

1. Download plug-ins

npm install axios --save

2. And then in main.js Global mount

import axios from 'axios'
Vue.prototype.$axios = axios

2. establish api Below api.js This is the custom file name , The code is as follows

// Login interface 
 export const authorization_service_users_login = 'api/authorization_service/users/login'

3. establish utils Below request.js This is the custom file name , The code is as follows

Pay attention to mainly add this ： find baseURL: Need to ask for domain name add , .com ending , for example https://baidu.com/

Download this file below
npm install js-md5 --save
npm install element-ui --save

import axios from 'axios'
import { Notification, MessageBox, Message } from 'element-ui'
import store from '@/store'
import md5 from 'js-md5'

var getId = () => {
  return localStorage.getItem('userId');
}

var getToken = () => {
  return localStorage.getItem('token');
}

var showErr = true

axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8'
//  establish axios example 
const service = axios.create({
  // axios The request configuration in is baseURL Options , To express a request URL Common part 
  baseURL: 'https://baidu.com',
  //  Overtime 
  timeout: 10000
})
// request Interceptor 
service.interceptors.request.use(config => {
  if (config && config.data && 'showErr' in config.data) {
    showErr = config.data.showErr
  }

  if (config.method === 'post' && !config.data) {
    config.data = {}
    config.data.aid = getId()
    config.data.t = new Date().getTime()
  } else if (config.method === 'post' && config.data) {
    config.data.aid = getId()
    config.data.t = new Date().getTime()
  }

  if (config.method === 'post') {
    config.transformRequest = (data, headers) => {
      let req = JSON.stringify(data)
      let token = getToken()
      let sign = md5(req + token)
      console.log(req + token)
      config.headers['sign'] = sign
      return req
    }
  }


  if (config.method === 'get' && !config.params) {
    config.params = {}
    config.params.accessToken = getToken()
    config.params.timeStamp = new Date().getTime()
  } else if (config.method === 'get' && config.params) {
    if (!config.params.accessToken) config.params.accessToken = getToken()
    config.params.timeStamp = new Date().getTime()
  }

  // get Request mapping params Parameters 
  if (config.method === 'get' && config.params) {
    let url = config.url + '?';
    for (const propName of Object.keys(config.params)) {
      const value = config.params[propName];
      var part = encodeURIComponent(propName) + "=";
      if (value !== null && typeof (value) !== "undefined") {
        if (typeof value === 'object') {
          for (const key of Object.keys(value)) {
            if (value[key] !== null && typeof (value[key]) !== 'undefined') {
              let params = propName + '[' + key + ']';
              let subPart = encodeURIComponent(params) + '=';
              url += subPart + encodeURIComponent(value[key]) + '&';
            }
          }
        } else {
          url += part + encodeURIComponent(value) + "&";
        }
      }
    }
    url = url.slice(0, -1);
    config.params = {};
    config.url = url;
  }
  return config
}, error => {
  console.log(error)
  Promise.reject(error)
})

//  Response interceptors 
service.interceptors.response.use(res => {
  //  If the status code is not set, the default status is success 
  const code = res.data.code;
  //  Get error messages 
  //const msg = i18n.t(`errCode.E${code}`)
  const msg = res.data.msg
  const flag = res.data.flag
  if (!flag && (code === 401 || code === 403)) {
    MessageBox.confirm(msg, ' Tips ', {
      confirmButtonText: ' determine ',
      cancelButtonText: ' Cancel ',
      type: 'warning'
    }
    ).then(() => {
      store.dispatch('LogOut').then(() => {
        this.$router.go(0)
      })
    }).catch(() => { });
    return Promise.reject(' Login expired , Please login again ')
  } else if (!flag) {
    if (showErr) {
      Message({
        message: msg,
        type: 'error'
      })
    }
    return Promise.reject(new Error(msg))
  } else {
    return res.data
  }
},
  error => {
    console.log('err' + error)
    let { message } = error;
    if (message == "Network Error") {
      message = ' Network error ';
    }
    else if (message.includes("timeout")) {
      message = ' Server connection timed out ';
    }
    else if (message.includes("Request failed with status code")) {
      message = ' Network error ' + message.substr(message.length - 3);
    }
    Message({
      message: message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)
service.version = 'v1'

export default service

4. establish vue.config.js Of target Represents the requested domain name , Cross domain codes are as follows

module.exports = {
  publicPath: './',
  lintOnSave: false, 
  devServer: {
    port: 8089, //  Start port 
    open: false, //  Whether to automatically open the web page after startup 
    proxy: {
      '/api': {
        target: 'https://baidu.com', //
        secure: true, // Accept each other is https The interface of 
        ws: true, //  Is it enabled? websockets
        changeOrigin: true, // Whether it is allowed to cross 
        pathRewrite: {
          '^/api': '/' // Delegate your address to this  /api  Use this next when requesting /api To replace your address 
        },
      }
    },
  }
}

5. Page call usage

<template>
  <div>
    <button @click="login()"></button>
  </div>
</template>

<script>
import * as api from '../../api/api'
export default {
    
  data () {
    
    return {
    
      menuList: []
    }
  },
  mounted () {
    
    this.getList()
  },

  methods: {
    
    // Login method 
    login (loginFrom) {
    
      this.$refs.loginFormRef.validate(async (valid) => {
    
        if (valid) {
    
          request({
    
            method: "post",
            url: api.authorization_service_users_login,			//  introduce api File point api.js Function name inside 
            data: {
    
              account: this.loginFrom.account,	
              password: md5(this.loginFrom.password),
            },
          }).then((res) => {
    
            this.$message.success(this.$t("lang.message.loginSuccessful"));
            // Save after login token state 
            window.localStorage.setItem("token", res.data.token);
            window.localStorage.setItem("account", res.data.account);
            // window.localStorage.setItem("username", res.dat);
            window.localStorage.setItem("userId", res.data.userId);
            // window.sessionStorage.setItem('userId',res.data.userId)
            this.$router.push("/home");
          });
        }
      });
    },
  }
}
</script>

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