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1
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-import fetch from 'dva/fetch';
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2
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-import { notification } from 'antd';
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3
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-import router from 'umi/router';
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4
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-import hash from 'hash.js';
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5
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-import { isAntdPro } from './utils';
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6
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-
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7
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-const codeMessage = {
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8
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- 200: '服务器成功返回请求的数据。',
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9
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- 201: '新建或修改数据成功。',
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10
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- 202: '一个请求已经进入后台排队（异步任务）。',
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11
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- 204: '删除数据成功。',
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12
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- 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。',
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13
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- 401: '用户没有权限（令牌、用户名、密码错误）。',
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14
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- 403: '用户得到授权，但是访问是被禁止的。',
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15
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- 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。',
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16
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- 406: '请求的格式不可得。',
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17
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- 410: '请求的资源被永久删除，且不会再得到的。',
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18
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- 422: '当创建一个对象时，发生一个验证错误。',
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19
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- 500: '服务器发生错误，请检查服务器。',
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20
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- 502: '网关错误。',
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21
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- 503: '服务不可用，服务器暂时过载或维护。',
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22
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- 504: '网关超时。',
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23
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-};
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24
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-
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25
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-const checkStatus = response => {
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26
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- if (response.status >= 200 && response.status < 300) {
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27
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- return response;
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28
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- }
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29
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- const errortext = codeMessage[response.status] || response.statusText;
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30
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- notification.error({
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31
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- message: `请求错误 ${response.status}: ${response.url}`,
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32
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- description: errortext,
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33
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- });
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34
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- const error = new Error(errortext);
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35
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- error.name = response.status;
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36
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- error.response = response;
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37
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- throw error;
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38
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-};
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39
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-
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40
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-const cachedSave = (response, hashcode) => {
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41
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- /**
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42
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- * Clone a response data and store it in sessionStorage
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43
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- * Does not support data other than json, Cache only json
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44
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- */
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45
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- const contentType = response.headers.get('Content-Type');
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46
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- if (contentType && contentType.match(/application\/json/i)) {
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47
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- // All data is saved as text
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48
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- response
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49
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- .clone()
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50
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- .text()
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51
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- .then(content => {
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52
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- sessionStorage.setItem(hashcode, content);
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53
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- sessionStorage.setItem(`${hashcode}:timestamp`, Date.now());
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54
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- });
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55
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- }
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56
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- return response;
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57
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-};
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58
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-
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59
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-/**
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60
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- * Requests a URL, returning a promise.
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61
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- *
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62
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- * @param {string} url The URL we want to request
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63
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- * @param {object} [option] The options we want to pass to "fetch"
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64
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- * @return {object} An object containing either "data" or "err"
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65
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- */
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66
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-export default function request(url, option) {
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67
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- const options = {
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68
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- expirys: isAntdPro(),
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69
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- ...option,
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70
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- };
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71
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- /**
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72
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- * Produce fingerprints based on url and parameters
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73
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- * Maybe url has the same parameters
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74
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- */
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75
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- const fingerprint = url + (options.body ? JSON.stringify(options.body) : '');
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76
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- const hashcode = hash
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77
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- .sha256()
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78
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- .update(fingerprint)
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79
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- .digest('hex');
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80
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-
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81
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- const defaultOptions = {
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82
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- credentials: 'include',
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83
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- };
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84
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- const newOptions = { ...defaultOptions, ...options };
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85
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- if (
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86
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- newOptions.method === 'POST' ||
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87
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- newOptions.method === 'PUT' ||
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88
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- newOptions.method === 'DELETE'
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89
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- ) {
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90
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- if (!(newOptions.body instanceof FormData)) {
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91
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- newOptions.headers = {
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92
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- Accept: 'application/json',
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93
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- 'Content-Type': 'application/json; charset=utf-8',
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94
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- ...newOptions.headers,
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95
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- };
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96
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- newOptions.body = JSON.stringify(newOptions.body);
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97
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- } else {
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98
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- // newOptions.body is FormData
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99
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- newOptions.headers = {
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100
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- Accept: 'application/json',
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101
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- ...newOptions.headers,
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102
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- };
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103
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- }
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104
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- }
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105
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-
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106
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- const expirys = options.expirys && 60;
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107
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- // options.expirys !== false, return the cache,
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108
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- if (options.expirys !== false) {
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109
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- const cached = sessionStorage.getItem(hashcode);
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110
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- const whenCached = sessionStorage.getItem(`${hashcode}:timestamp`);
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111
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- if (cached !== null && whenCached !== null) {
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112
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- const age = (Date.now() - whenCached) / 1000;
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113
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- if (age < expirys) {
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114
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- const response = new Response(new Blob([cached]));
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115
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- return response.json();
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116
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- }
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117
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- sessionStorage.removeItem(hashcode);
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118
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- sessionStorage.removeItem(`${hashcode}:timestamp`);
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119
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- }
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120
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- }
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121
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- return fetch(url, newOptions)
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122
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- .then(checkStatus)
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123
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- .then(response => cachedSave(response, hashcode))
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124
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- .then(response => {
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125
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- // DELETE and 204 do not return data by default
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126
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- // using .json will report an error.
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127
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- if (newOptions.method === 'DELETE' || response.status === 204) {
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128
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- return response.text();
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129
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- }
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130
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- return response.json();
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131
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- })
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132
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- .catch(e => {
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133
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- const status = e.name;
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134
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- if (status === 401) {
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135
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- // @HACK
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136
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- /* eslint-disable no-underscore-dangle */
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137
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- window.g_app._store.dispatch({
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138
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- type: 'login/logout',
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139
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- });
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140
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- return;
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141
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- }
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142
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- // environment should not be used
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143
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- if (status === 403) {
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144
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- router.push('/exception/403');
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145
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- return;
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146
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- }
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147
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- if (status <= 504 && status >= 500) {
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148
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- router.push('/exception/500');
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149
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- return;
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150
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- }
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151
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- if (status >= 404 && status < 422) {
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152
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- router.push('/exception/404');
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153
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- }
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154
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- });
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155
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-} |
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