MissingSchemaError: Schema hasn't been registered for model "User".
controller层 调不到User这个model什么原因
var mongoose = require('mongoose');
var User = mongoose.model('User');
/*var UserSchema = require('../schemas/user');
var User = mongoose = mongoose.model('User',UserSchema);*/
只有用了注释的才可以 直接引user的model就说我没定义，求解！
