request请求封装参考 重复提交 导出excel
若依
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'] = 'Bearer ' + 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 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 {
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
使用
import request from '@/utils/request'
// 登录方法
export function login(username, password, code, uuid) {
const data = {
username,
password,
code,
uuid
}
return request({
url: '/login',
headers: {
isToken: false
},
method: 'post',
data: data
})
}
// 获取用户详细信息
export function getInfo() {
return request({
url: '/getInfo',
method: 'get'
})
}
ruoyi.js
// 验证是否为blob格式
export function blobValidate(data) {
return data.type !== 'application/json'
}
cache.js
const sessionCache = {
set (key, value) {
if (!sessionStorage) {
return
}
if (key != null && value != null) {
sessionStorage.setItem(key, value)
}
},
get (key) {
if (!sessionStorage) {
return null
}
if (key == null) {
return null
}
return sessionStorage.getItem(key)
},
setJSON (key, jsonValue) {
if (jsonValue != null) {
this.set(key, JSON.stringify(jsonValue))
}
},
getJSON (key) {
const value = this.get(key)
if (value != null) {
return JSON.parse(value)
}
},
remove (key) {
sessionStorage.removeItem(key);
}
}
const localCache = {
set (key, value) {
if (!localStorage) {
return
}
if (key != null && value != null) {
localStorage.setItem(key, value)
}
},
get (key) {
if (!localStorage) {
return null
}
if (key == null) {
return null
}
return localStorage.getItem(key)
},
setJSON (key, jsonValue) {
if (jsonValue != null) {
this.set(key, JSON.stringify(jsonValue))
}
},
getJSON (key) {
const value = this.get(key)
if (value != null) {
return JSON.parse(value)
}
},
remove (key) {
localStorage.removeItem(key);
}
}
export default {
/**
* 会话级缓存
*/
session: sessionCache,
}/**
* 参数处理
* @param {*} params 参数
*/
export function tansParams(params) {
let result = ''
for (const propName of Object.keys(params)) {
const value = params[propName];
var part = encodeURIComponent(propName) + "=";
if (value !== null && value !== "" && typeof (value) !== "undefined") {
if (typeof value === 'object') {
for (const key of Object.keys(value)) {
if (value[key] !== null && value[key] !== "" && typeof (value[key]) !== 'undefined') {
let params = propName + '[' + key + ']';
var subPart = encodeURIComponent(params) + "=";
result += subPart + encodeURIComponent(value[key]) + "&";
}
}
} else {
result += part + encodeURIComponent(value) + "&";
}
}
}
return result
}
导出使用下载
/** 导出按钮操作 */
handleExport() {
this.download('/monitor/jobLog/export', {
...this.queryParams
}, `log_${new Date().getTime()}.xlsx`)
}
errorCode.js
export default {
'401': '认证失败，无法访问系统资源',
'403': '当前操作没有权限',
'404': '访问资源不存在',
'default': '系统未知错误，请反馈给管理员'
}
auth.js
import Cookies from 'js-cookie'
const TokenKey = 'Admin-Token'
export function getToken() {
return Cookies.get(TokenKey)
}
export function setToken(token) {
return Cookies.set(TokenKey, token)
}
export function removeToken() {
return Cookies.remove(TokenKey)
}
ruoyi.js
/**
* 通用js方法封装处理
* Copyright (c) 2019 ruoyi
*/
// 日期格式化
export function parseTime(time, pattern) {
if (arguments.length === 0 || !time) {
return null
}
const format = pattern || '{y}-{m}-{d} {h}:{i}:{s}'
let date
if (typeof time === 'object') {
date = time
} else {
if ((typeof time === 'string') && (/^[0-9]+$/.test(time))) {
time = parseInt(time)
} else if (typeof time === 'string') {
time = time.replace(new RegExp(/-/gm), '/').replace('T', ' ').replace(new RegExp(/\.[\d]{3}/gm), '');
}
if ((typeof time === 'number') && (time.toString().length === 10)) {
time = time * 1000
}
date = new Date(time)
}
const formatObj = {
y: date.getFullYear(),
m: date.getMonth() + 1,
d: date.getDate(),
h: date.getHours(),
i: date.getMinutes(),
s: date.getSeconds(),
a: date.getDay()
}
const time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
let value = formatObj[key]
// Note: getDay() returns 0 on Sunday
if (key === 'a') { return ['日', '一', '二', '三', '四', '五', '六'][value] }
if (result.length > 0 && value < 10) {
value = '0' + value
}
return value || 0
})
return time_str
}
// 表单重置
export function resetForm(refName) {
if (this.$refs[refName]) {
this.$refs[refName].resetFields();
}
}
// 添加日期范围
export function addDateRange(params, dateRange, propName) {
let search = params;
search.params = typeof (search.params) === 'object' && search.params !== null && !Array.isArray(search.params) ? search.params : {};
dateRange = Array.isArray(dateRange) ? dateRange : [];
if (typeof (propName) === 'undefined') {
search.params['beginTime'] = dateRange[0];
search.params['endTime'] = dateRange[1];
} else {
search.params['begin' + propName] = dateRange[0];
search.params['end' + propName] = dateRange[1];
}
return search;
}
// 回显数据字典
export function selectDictLabel(datas, value) {
if (value === undefined) {
return "";
}
var actions = [];
Object.keys(datas).some((key) => {
if (datas[key].value == ('' + value)) {
actions.push(datas[key].label);
return true;
}
})
if (actions.length === 0) {
actions.push(value);
}
return actions.join('');
}
// 回显数据字典（字符串、数组）
export function selectDictLabels(datas, value, separator) {
if (value === undefined || value.length ===0) {
return "";
}
if (Array.isArray(value)) {
value = value.join(",");
}
var actions = [];
var currentSeparator = undefined === separator ? "," : separator;
var temp = value.split(currentSeparator);
Object.keys(value.split(currentSeparator)).some((val) => {
var match = false;
Object.keys(datas).some((key) => {
if (datas[key].value == ('' + temp[val])) {
actions.push(datas[key].label + currentSeparator);
match = true;
}
})
if (!match) {
actions.push(temp[val] + currentSeparator);
}
})
return actions.join('').substring(0, actions.join('').length - 1);
}
// 字符串格式化(%s )
export function sprintf(str) {
var args = arguments, flag = true, i = 1;
str = str.replace(/%s/g, function () {
var arg = args[i++];
if (typeof arg === 'undefined') {
flag = false;
return '';
}
return arg;
});
return flag ? str : '';
}
// 转换字符串，undefined,null等转化为""
export function parseStrEmpty(str) {
if (!str || str == "undefined" || str == "null") {
return "";
}
return str;
}
// 数据合并
export function mergeRecursive(source, target) {
for (var p in target) {
try {
if (target[p].constructor == Object) {
source[p] = mergeRecursive(source[p], target[p]);
} else {
source[p] = target[p];
}
} catch (e) {
source[p] = target[p];
}
}
return source;
};
/**
* 构造树型结构数据
* @param {*} data 数据源
* @param {*} id id字段 默认 'id'
* @param {*} parentId 父节点字段 默认 'parentId'
* @param {*} children 孩子节点字段 默认 'children'
*/
export function handleTree(data, id, parentId, children) {
let config = {
id: id || 'id',
parentId: parentId || 'parentId',
childrenList: children || 'children'
};
var childrenListMap = {};
var nodeIds = {};
var tree = [];
for (let d of data) {
let parentId = d[config.parentId];
if (childrenListMap[parentId] == null) {
childrenListMap[parentId] = [];
}
nodeIds[d[config.id]] = d;
childrenListMap[parentId].push(d);
}
for (let d of data) {
let parentId = d[config.parentId];
if (nodeIds[parentId] == null) {
tree.push(d);
}
}
for (let t of tree) {
adaptToChildrenList(t);
}
function adaptToChildrenList(o) {
if (childrenListMap[o[config.id]] !== null) {
o[config.childrenList] = childrenListMap[o[config.id]];
}
if (o[config.childrenList]) {
for (let c of o[config.childrenList]) {
adaptToChildrenList(c);
}
}
}
return tree;
}
/**
* 参数处理
* @param {*} params 参数
*/
export function tansParams(params) {
let result = ''
for (const propName of Object.keys(params)) {
const value = params[propName];
var part = encodeURIComponent(propName) + "=";
if (value !== null && value !== "" && typeof (value) !== "undefined") {
if (typeof value === 'object') {
for (const key of Object.keys(value)) {
if (value[key] !== null && value[key] !== "" && typeof (value[key]) !== 'undefined') {
let params = propName + '[' + key + ']';
var subPart = encodeURIComponent(params) + "=";
result += subPart + encodeURIComponent(value[key]) + "&";
}
}
} else {
result += part + encodeURIComponent(value) + "&";
}
}
}
return result
}
// 验证是否为blob格式
export function blobValidate(data) {
return data.type !== 'application/json'
}