stringToDate(item) {
let time="";
let dateStr='1595661942000';
//let dateStr=item.createTime;
//let data=new Date();
let date = new Date(dateStr);
let y = date.getFullYear();
let MM = date.getMonth() + 1;
MM = MM < 10 ? ('0' + MM) : MM;
let d = date.getDate();
d = d < 10 ? ('0' + d) : d;
let h = date.getHours();
h = h < 10 ? ('0' + h) : h;
let m = date.getMinutes();
m = m < 10 ? ('0' + m) : m;
let s = date.getSeconds();
s = s < 10 ? ('0' + s) : s;
time=y + '年' + MM + '月' + d + '日' + ' ' + h + ':' + m + ':' + s;
item.time=time;
return item;
}