fetch的封装

export default class HttpUtil {
  static get (url){
    return new Promise((resolve,reject)=>{
      fetch(url)
          .then(res=>resolve(res.json()))
          .catch(e=>reject(e))
    })
  }
 static post(url,data){
    return new Promise((resolve,reject)=>{
      fetch(url,{
        method: "post",
        header:{
          'Accept': 'application/json',
          'Content-Type': 'application/json'
        },
        body:JSON.stringify(data)
      }).then(res=>resolve(res.json()))
          .catch(e=>reject(e))
    })
 }
}