schema声明

var Schema = mongoose.Schema;
var ObjectId = Schema.ObjectId;

var User = new Schema({
    username : String ,
    password: String
});
var User = mongoose.model('User',User);

注册功能 输入的用户名是eee 密码是eee

//注册
app.post('/doregister',function(req,res){
    console.log(req.body.user);// 输出{username:'eee',password:'eee'}
    User.find({username:req.body.user.username},function(err,doc){
        console.log(doc);
        if (doc=[]){
            console.log('can');//输出can
            var user = new User(req.body.user);
            user.save(function(err){
                if(!err){
                    console.log('register success!');
                    console.log('user:'+req.body.user);//user [Object Object]
                    res.redirect('/index');
                }else{
                    res.redirect('/register');
                }
            });
        }else{
            console.log('can t');
            res.redirect('/register');
        }
    });
});

用eee & eee登陆的时候

app.post('/dologin',function(req,res){
    User.find({username:req.body.user.username},function(err,doc){
        if(doc.password = req.body.user.password){
            console.log("登陆成功");
            req.session.user = doc;
            console.log(req.session.user);// 就是这个特别奇葩 输出是[{ _id:***********,username:'eee',password:'eee',__v:'0'},password:'eee']
            res.redirect('/');
        }else{
            res.redirect('/login');
        }
        console.log(req.session.user.username);//undefined
        console.log(req.session.user.password);//eee
    });
});

what?!!why?!!