layui 封装 ajax请求

  /**封装网络请求 */
/**baseUrl */
var baseUrl = '';  //此处填写您的域名地址
 
/**token */
const token = sessionStorage.getItem("token");  //获取存储在浏览器中的token
let headers;
if(token){
  headers = {
    "Authorization": token //关于请求头
  }
}
 
/**get请求数据 */
function getData (url = '', params = {}, isLoading = false) {
  if(isLoading){
  layer.load(1)  //在请求未响应之前,给用户一个等待状态
  }
  var promise = new Promise((resolve, reject)=>{
  $.ajax({
  url: baseUrl + url,
  type: 'GET',
  data: params,
  headers,
  success: res=>{
if(isLoading){
layer.closeAll('loading')
}
if(res.code == 200){
resolve(res.data)
}else if(res.code == 404){
layer.msg(res.msg, {icon: 7})
reject(res.data)
}else if(res.code == 401){
layer.msg('登录过期，请重新登录', {icon: 7})
setTimeout(() => {
sessionStorage.clear();
window.location.href = '../page/login.html'//根据后端返回code,判断一些错误情况
}, 1500);
}else if(res.code == 403){
layer.msg('您无权限访问此系统', {icon: 7})
setTimeout(() => {
sessionStorage.clear();
window.location.href = '../page/login.html'
}, 1500);
}
},
error: err=>{
layer.msg(err, {icon: 7})   //其他错误情况
reject(err)
}
})
})
return promise
}
 
/**post请求数据 */
function postData (url = '', params = {}, isLoading = false) {
if(isLoading){
layer.load(1)
}
var promise = new Promise((resolve, reject)=>{
$.ajax({
url: baseUrl + url,
type: 'POST',
data: params,
headers,
success: res=>{
if(isLoading){
layer.closeAll('loading')
}
if(res.code == 200){
resolve(res.data)
}else if(res.code == 404){
layer.msg(res.msg, {icon: 7})
reject(res.data)
}else if(res.code == 401){
layer.msg('登录过期，请重新登录', {icon: 7})
setTimeout(() => {
sessionStorage.removeItem('token')
window.location.href = 'page/login.html'
}, 1500);
}else if(res.code == 403){
layer.msg('您无权限访问此系统', {icon: 7})
setTimeout(() => {
sessionStorage.removeItem('token')
window.location.href = 'page/login.html'
}, 1500);
}
},
error: err=>{
layer.msg(err, {icon: 7})
reject(err)
}
})
})
return promise
}