如何解决Mongoose Save：文档验证失败，但接受 console.log 和手动插入
我正在处理一些注册代码（MERN 堆栈），并且在使用 user.save 时从 MongoDB 收到“文档验证失败”。但是，如果我使用 console.log()，将结果复制/粘贴到插入中，并用双引号替换单引号，则可以接受。
到目前为止，这是我的注册路线：
router.post("/signup",async (req,res) => {
let { firstName,lastName,profileImage,email,subscribed_Comments,subscribed_NewPost,username,password } = req.body;
if (username && email && password && firstName && lastName && subscribed_Comments !== undefined && subscribed_NewPost !== undefined) {
username = username.toLowerCase();
email = email.toLowerCase();
//Validate Password
if (/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,15}$/.test(password)) {
//Check if username or email already used
User.findOne({ "$or": [{ "username": username },{ "email": email }] })
.exec((err,user) => {
if (err) {
console.error(err);
res.status(500).send({ "error": "An unexpected error occurred. Please contact an administrator." });
} else if (user === null) {
//User did not exist ... create
bcrypt.genSalt(Number(SALT),function (err,salt) {
if (err) {
console.error(err);
res.status(500).send({ "error": "An unexpected error occurred. Please contact an administrator." });
}
bcrypt.hash(password,salt,hash) {
if (err) {
console.error(err);
res.status(500).send({ "error": "An unexpected error occurred. Please contact an administrator." });
}
//create user
let user = new User({
username: username,email: email,password: hash,userRole: "User"
});
console.log(user)
user.save((err,user) => {
if (err) {
console.error(err);
res.status(500).send({ "error": "Failed to create a User. Please contact an administrator." });
} else {
console.log(`Successfully created user ${user.username}`);
//create account
let account = new Account({
"FirstName": firstName,"LastName": lastName,"SubscribednewPost": subscribed_NewPost,"SubscribedComments": subscribed_Comments,"ProfileImage": profileImage || "","User_Account": user._id
});
account.save((err,account) => {
if (err) {
console.error(err);
user.delete();
res.status(500).send({ "error": "Failed to create an Account. Please contact an Administrator" });
} else {
console.log(`Successfully created account for ${account.firstName} ${account.lastName}`);
req.session.userid = user._id;
req.session.username = user.username;
req.session.userRole = user.userRole;
}
})
}
});
});
});
} else {
console.log(`Username: ${username} or Email: ${email} already in use.`);
res.status(500).send({ "error": "Username or Email is already in use" });
}
});
} else {
// Invalid Password
console.log("Invalid Password in Signup");
res.status(500).send({ "error": "Password did not meet expected criteria" });
}
} else {
res.status(500).send({ "error": "Invalid Request" });
}
})
这里是猫鼬模式
const mongoose = require("mongoose");
const userSchema = mongoose.Schema({
username: {
type: String,unique: [true,"That username already registered."],required: [true,"Username is required."]
},email: {
type: String,"That email is already registered."],"Email is required."],validate: {
validator: function(v){
return /^\w+@[a-zA-Z_]+?\.[a-zA-Z]{2,3}$/i.test(v);
},message: "Email was not in a valid format."
}
},password: {
type: String,"Password is required."]
},userRole: {
type: String,enum: ["Anonymous","User","Moderator"],"User Role is required."]
}
},{collection: "User"},{versionKey: false})
module.exports = mongoose.model("User",userSchema);
这里是 MongoDB 验证
{
$jsonSchema: {
bsonType: 'object',title: 'user',required: [
'username','email','password','userRole'
],properties: {
_id: {
bsonType: 'objectId',uniqueItems: true
},username: {
bsonType: 'string',email: {
bsonType: 'string',uniqueItems: true,pattern: '^\\w+@[a-zA-Z_]+?\\.[a-zA-Z]{2,3}$'
},password: {
bsonType: 'string'
},userRole: {
'enum': [
'Anonymous','User','Moderator'
]
}
},additionalProperties: false
}
}
这是验证失败的 json（来自 console.log()）。如果我复制/粘贴它并用双引号替换单引号，则 mongodb 接受它。
{
_id: 606a0a09d70db426acda05ee,username: 'johndoe',email: 'johndoe@gmail.com',password: '$2b$10$vofYCj31690seAIKHqjkUuba8paeJy5ZC1Qt8ZHjZHmKVQurZ.hfi',userRole: 'User'
}
有没有想过为什么上述在遵循我定义的架构时验证失败？我已经尝试从 Mongoose 模式中删除验证，以确保它不会在那里失败，但事实并非如此。我认为唯一的可能是它没有格式化 _id，但是 mongodb 拒绝由 mongoose 创建的默认 _id 是没有意义的。
编辑：这是堆栈跟踪
MongoError: Document Failed validation
at Function.create (D:\Projects\portfolio-backend\node_modules\mongodb\lib\core\error.js:57:12)
at toError (D:\Projects\portfolio-backend\node_modules\mongodb\lib\utils.js:123:22)
at D:\Projects\portfolio-backend\node_modules\mongodb\lib\operations\common_functions.js:265:39
at handler (D:\Projects\portfolio-backend\node_modules\mongodb\lib\core\sdam\topology.js:942:24)
at D:\Projects\portfolio-backend\node_modules\mongodb\lib\cmap\connection_pool.js:350:13
at handleOperationResult (D:\Projects\portfolio-backend\node_modules\mongodb\lib\core\sdam\server.js:558:5)
at MessageStream.messageHandler (D:\Projects\portfolio-backend\node_modules\mongodb\lib\cmap\connection.js:277:5)
at MessageStream.emit (events.js:310:20)
at processIncomingData (D:\Projects\portfolio-backend\node_modules\mongodb\lib\cmap\message_stream.js:144:12)
at MessageStream._write (D:\Projects\portfolio-backend\node_modules\mongodb\lib\cmap\message_stream.js:42:5)
at doWrite (_stream_writable.js:442:12)
at writeOrBuffer (_stream_writable.js:426:5)
at MessageStream.Writable.write (_stream_writable.js:317:11)
at Socket.ondata (_stream_readable.js:695:22)
at Socket.emit (events.js:310:20)
at addChunk (_stream_readable.js:286:12) {
driver: true,name: 'MongoError',index: 0,code: 121
}
解决方法
错误可能是由 _id 引起的。您正在发送 ObjectId 的字符串表示，但 _id 所需的类型是 ObjectId。尝试将 _id: 606a0a09d70db426acda05ee 替换为 _id:ObjectId('606a0a09d70db426acda05ee');
你也可以尝试改变这个：
let user = new User({
username: username,email: email,password: hash,});
console.log(user)
user.save((err,user) => {
有了这个：
User.create({
username: username,}).then((user)=>{
console.log('User successfully created: ',user);
},(error)=>{
console.log('ERROR: ',error);
})
所以，我想通了。显然，尽管我在架构中有 versionKey: false，Mongoose Schema 还是将 __v 整数添加到 .save 调用中。我通过将验证设置为警告而不是错误来测试它，并观察到 __v 出现在保存的文档中。为了修正它，我加入蒙戈下面进入验证JSON。
__v: {
bsonType: 'int'
}
TLDR：缺少的“验证”是在 'additionalProperties' 设置为 false 时未定义 __v 属性。
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