src/utils/request.js

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import fetch from 'dva/fetch';
import {notification} from 'antd';
import store from '../index';
import {getIntlContent} from './IntlUtils'

const codeMessage = {
  200: '服务器成功返回请求的数据。',
  201: '新建或修改数据成功。',
  202: '一个请求已经进入后台排队（异步任务）。',
  204: '删除数据成功。',
  400: '发出的请求有错误，服务器没有进行新建或修改数据的操作。',
  401: '用户没有权限（令牌、用户名、密码错误）。',
  403: '用户得到授权，但是访问是被禁止的。',
  404: '发出的请求针对的是不存在的记录，服务器没有进行操作。',
  406: '请求的格式不可得。',
  410: '请求的资源被永久删除，且不会再得到的。',
  422: '当创建一个对象时，发生一个验证错误。',
  500: '服务器发生错误，请检查服务器。',
  502: '网关错误。',
  503: '服务不可用，服务器暂时过载或维护。',
  504: '网关超时。',
};

function checkStatus(response) {
  if (response.status >= 200 && response.status < 300) {
    return response;
  }
  const errortext = codeMessage[response.status] || response.statusText;
  notification.error({
    message: `请求错误 ${response.status}: ${response.url}`,
    description: errortext,
  });
  const error = new Error(errortext);
  error.name = response.status;
  error.response = response;
  throw error;
}

/**
 * check response's code
 * @param {response} response
 */
const checkResponseCode = response => {
  if (response.code === 401) {
    notification.error({
      message: getIntlContent("SHENYU.MESSAGE.SESSION.INVALID"),
      description: getIntlContent("SHENYU.MESSAGE.SESSION.RELOGIN"),
    });
    const error = new Error(response.message);
    error.name = response.code;
    error.response = response;
    throw error;
  } else {
    return true;
  }
};

/**
 * Requests a URL, returning a promise.
 *
 * @param  {string} url       The URL we want to request
 * @param  {object} [options] The options we want to pass to "fetch"
 * @return {object}           An object containing either "data" or "err"
 */
export default function request(url, options) {
  const defaultOptions = {};
  const newOptions = {...defaultOptions, ...options};
  if (
    newOptions.method === 'POST' ||
    newOptions.method === 'PUT' ||
    newOptions.method === 'DELETE'
  ) {
    if (!(newOptions.body instanceof FormData)) {
      newOptions.headers = {
        Accept: 'application/json',
        'Access-Control-Allow-Origin': '*',
        'Content-Type': 'application/json; charset=utf-8',
        ...newOptions.headers,
      };
      newOptions.body = JSON.stringify(newOptions.body);
    } else {
      // newOptions.body is FormData
      newOptions.headers = {
        Accept: 'application/json',
        ...newOptions.headers,
      };
    }
  }

  // add token
  let token = window.sessionStorage.getItem("token");
  if (token) {
    if (!newOptions.headers) {
      newOptions.headers = {};
    }
    newOptions.headers = {...newOptions.headers, "X-Access-Token": token};
  }

  return fetch(url, newOptions)
    .then(checkStatus)
    .then(response => {
      if (newOptions.method === 'DELETE' || response.status === 204) {
        return response.json();
      }
      return response.json();
    }).then(res => {
      if (checkResponseCode(res)) {
        return res;
      }
    })
    .catch(e => {
      const {dispatch} = store;
      const status = e.name;
      if (status === 401) {
        dispatch({
          type: 'login/logout',
        });
        dispatch({
          type: "global/resetPermission"
        });
      }
    });
}