dm-manage-web/src/utils/request.js

import axios from 'axios';
import {
  Notification,
  MessageBox,
  Message,
  Loading
} from 'element-ui';
import store from '@/store';
import {
  getToken
} from '@/utils/auth';
import errorCode from '@/utils/errorCode';
import {
  tansParams,
  blobValidate
} from '@/utils/ruoyi';
import cache from '@/plugins/cache';
import {
  saveAs
} from 'file-saver';
import {
  successCode
} from '@/global/global';

let downloadLoadingInstance;
// 是否显示重新登录
export const isRelogin = {
  show: false
};

axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8';
// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: process.env.VUE_APP_BASE_API,
  // 超时
  timeout: 10000
});

// request拦截器
service.interceptors.request.use(
  (config) => {
    // 是否需要设置 token
    const isToken = (config.headers || {}).isToken === false;
    // 是否需要防止数据重复提交
    const isRepeatSubmit = (config.headers || {}).repeatSubmit === false;
    if (getToken() && !isToken) {
      config.headers['Authorization'] = 'Bearer ' + getToken(); // 让每个请求携带自定义token 请根据实际情况自行修改
    }
    if (config.url.includes("http")) {
      config.baseURL = "";
    } else if (config.url.includes("amap")) {
      config.baseURL = "";
    }
    // get请求映射params参数
    if (config.method === 'get' && config.params) {
      let url = config.url + '?' + tansParams(config.params);
      url = url.slice(0, -1);
      config.params = {};
      config.url = url;
    }
    if (!isRepeatSubmit && (config.method === 'post' || config.method === 'put')) {
      const requestObj = {
        url: config.url,
        data: typeof config.data === 'object' ? JSON.stringify(config.data) : config.data,
        time: new Date().getTime()
      };
      const sessionObj = cache.session.getJSON('sessionObj');
      if (sessionObj === undefined || sessionObj === null || sessionObj === '') {
        cache.session.setJSON('sessionObj', requestObj);
      } else {
        const s_url = sessionObj.url; // 请求地址
        const s_data = sessionObj.data; // 请求数据
        const s_time = sessionObj.time; // 请求时间
        const interval = 1000; // 间隔时间(ms)，小于此时间视为重复提交
        if (s_data === requestObj.data && requestObj.time - s_time < interval && s_url === requestObj.url) {
          const message = '数据正在处理，请勿重复提交';
          console.warn(`[${s_url}]: ` + message);
          return Promise.reject(new Error(message));
        } else {
          cache.session.setJSON('sessionObj', requestObj);
        }
      }
    }
    return config;
  },
  (error) => {
    console.log(error);
    Promise.reject(error);
  }
);

// 响应拦截器
service.interceptors.response.use(
  (res) => {
    // 未设置状态码则默认成功状态
    const code = res.data.code || successCode;
    // 获取错误信息
    const msg = errorCode[code] || res.data.msg || errorCode['default'];
    // 二进制数据则直接返回
    if (res.request.responseType === 'blob' || res.request.responseType === 'arraybuffer') {
      return res.data;
    }
    if (code === 401) {
      if (!isRelogin.show) {
        isRelogin.show = true;
        MessageBox.confirm('登录状态已过期，您可以继续留在该页面，或者重新登录', '系统提示', {
            confirmButtonText: '重新登录',
            cancelButtonText: '取消',
            type: 'warning'
          })
          .then(() => {
            isRelogin.show = false;
            store.dispatch('LogOut').then(() => {
              location.href = '/index';
            });
          })
          .catch(() => {
            isRelogin.show = false;
          });
      }
      return Promise.reject('无效的会话，或者会话已过期，请重新登录。');
    } else if (code === 500) {
      Message({
        message: msg,
        type: 'error'
      });
      return Promise.reject(new Error(msg));
    } else if (code !== successCode) {
      Notification.error({
        title: msg
      });
      return Promise.reject('error');
    } else {
      return res.data;
    }
  },
  (error) => {
    console.log('err' + error);
    let {
      message
    } = error;
    if (message === 'Network Error') {
      message = '后端接口连接异常';
    } else if (message.includes('timeout')) {
      message = '系统接口请求超时';
    } else if (message.includes('Request failed with status code')) {
      message = '系统接口' + message.substr(message.length - 3) + '异常';
    }
    Message({
      message: message,
      type: 'error',
      duration: 5 * 1000
    });
    return Promise.reject(error);
  }
);

// 通用下载方法
export function download(url, params, filename, config) {
  downloadLoadingInstance = Loading.service({
    text: '正在下载数据，请稍候',
    spinner: 'el-icon-loading',
    background: 'rgba(0, 0, 0, 0.7)'
  });
  return service
    .post(url, params, {
      transformRequest: [
        (params) => {
          return tansParams(params);
        }
      ],
      headers: {
        'Content-Type': 'application/x-www-form-urlencoded'
      },
      responseType: 'blob',
      ...config
    })
    .then(async (data) => {
      const isLogin = await blobValidate(data);
      if (isLogin) {
        const blob = new Blob([data]);
        saveAs(blob, filename);
      } else {
        const resText = await data.text();
        const rspObj = JSON.parse(resText);
        const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode['default'];
        Message.error(errMsg);
      }
      downloadLoadingInstance.close();
    })
    .catch((r) => {
      console.error(r);
      Message.error('下载文件出现错误，请联系管理员！');
      downloadLoadingInstance.close();
    });
}

export default service;