首先需要将mongoose引入
const mongoose = require('mongoose');
mongoose.Types.ObjectId(id);//这才是关键
//用户登录更新登录时间
app.all('/userLoginTime',(req,res,next)=>{
let id = req.query._id;
let _id = mongoose.Types.ObjectId(id);
console.log(_id,req.query.loginTime)
user.update({"_id":_id},{$set:{loginLastTime:req.query.loginTime}},{upsert:true,multi:false},(err,data)=>{
res.send(data);
})
});