初始化 antd-pro

admin-web/src/utils/request.js

@@ -0,0 +1,155 @@
+import fetch from 'dva/fetch';
+import { notification } from 'antd';
+import router from 'umi/router';
+import hash from 'hash.js';
+import { isAntdPro } from './utils';
+
+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。',
+};
+
+const 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}: ${response.url}`,
+    description: errortext,
+  });
+  const error = new Error(errortext);
+  error.name = response.status;
+  error.response = response;
+  throw error;
+};
+
+const cachedSave = (response, hashcode) => {
+  /**
+   * Clone a response data and store it in sessionStorage
+   * Does not support data other than json, Cache only json
+   */
+  const contentType = response.headers.get('Content-Type');
+  if (contentType && contentType.match(/application\/json/i)) {
+    // All data is saved as text
+    response
+      .clone()
+      .text()
+      .then(content => {
+        sessionStorage.setItem(hashcode, content);
+        sessionStorage.setItem(`${hashcode}:timestamp`, Date.now());
+      });
+  }
+  return response;
+};
+
+/**
+ * Requests a URL, returning a promise.
+ *
+ * @param  {string} url       The URL we want to request
+ * @param  {object} [option] The options we want to pass to "fetch"
+ * @return {object}           An object containing either "data" or "err"
+ */
+export default function request(url, option) {
+  const options = {
+    expirys: isAntdPro(),
+    ...option,
+  };
+  /**
+   * Produce fingerprints based on url and parameters
+   * Maybe url has the same parameters
+   */
+  const fingerprint = url + (options.body ? JSON.stringify(options.body) : '');
+  const hashcode = hash
+    .sha256()
+    .update(fingerprint)
+    .digest('hex');
+
+  const defaultOptions = {
+    credentials: 'include',
+  };
+  const newOptions = { ...defaultOptions, ...options };
+  if (
+    newOptions.method === 'POST' ||
+    newOptions.method === 'PUT' ||
+    newOptions.method === 'DELETE'
+  ) {
+    if (!(newOptions.body instanceof FormData)) {
+      newOptions.headers = {
+        Accept: 'application/json',
+        '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,
+      };
+    }
+  }
+
+  const expirys = options.expirys && 60;
+  // options.expirys !== false, return the cache,
+  if (options.expirys !== false) {
+    const cached = sessionStorage.getItem(hashcode);
+    const whenCached = sessionStorage.getItem(`${hashcode}:timestamp`);
+    if (cached !== null && whenCached !== null) {
+      const age = (Date.now() - whenCached) / 1000;
+      if (age < expirys) {
+        const response = new Response(new Blob([cached]));
+        return response.json();
+      }
+      sessionStorage.removeItem(hashcode);
+      sessionStorage.removeItem(`${hashcode}:timestamp`);
+    }
+  }
+  return fetch(url, newOptions)
+    .then(checkStatus)
+    .then(response => cachedSave(response, hashcode))
+    .then(response => {
+      // DELETE and 204 do not return data by default
+      // using .json will report an error.
+      if (newOptions.method === 'DELETE' || response.status === 204) {
+        return response.text();
+      }
+      return response.json();
+    })
+    .catch(e => {
+      const status = e.name;
+      if (status === 401) {
+        // @HACK
+        /* eslint-disable no-underscore-dangle */
+        window.g_app._store.dispatch({
+          type: 'login/logout',
+        });
+        return;
+      }
+      // environment should not be used
+      if (status === 403) {
+        router.push('/exception/403');
+        return;
+      }
+      if (status <= 504 && status >= 500) {
+        router.push('/exception/500');
+        return;
+      }
+      if (status >= 404 && status < 422) {
+        router.push('/exception/404');
+      }
+    });
+}