daimp-front/sub-admin/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';

let downloadLoadingInstance;
// 是否显示重新登录
export let 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'] = getToken(); // 让每个请求携带自定义token 请根据实际情况自行修改
    }
    // 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 requestSize = Object.keys(JSON.stringify(requestObj)).length; // 请求数据大小
      const limitSize = 5 * 1024 * 1024; // 限制存放数据5M
      if (requestSize >= limitSize) {
        console.warn(`[${config.url}]: ` + '请求数据大小超出允许的5M限制，无法进行防重复提交验证。');
        return config;
      }
      const sessionObj = cache.session.getJSON('sessionObj');
      if (sessionObj === undefined || sessionObj === null || sessionObj === '') {
        cache.session.setJSON('sessionObj', requestObj);
      } else {
        const s_url = sessionObj.url; // 请求地址
        const s_data = sessionObj.data; // 请求数据
        const s_time = sessionObj.time; // 请求时间
        const interval = 1000; // 间隔时间(ms)，小于此时间视为重复提交
        if (s_data === requestObj.data && requestObj.time - s_time < interval && s_url === requestObj.url) {
          const message = '数据正在处理，请勿重复提交';
          console.warn(`[${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 || 200;
    // 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 === 601) {
      Message({ message: msg, type: 'warning' });
      return Promise.reject('error');
    } else if (code !== 200) {
      Notification.error({ title: msg });
      return Promise.reject('error');
    } else {
      if (res.data.data?.records) {
        res.data = {
          code: res.data.code,
          msg: res.data.msg,
          rows: res.data.data.records,
          total: res.data.data.total ?? 0,
        };
      }
      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 isBlob = blobValidate(data);
      if (isBlob) {
        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;