[英]Nodemon error with mondoDB: “ app crashed - waiting for file changes before starting”
[英]nodemon app crashed - waiting for file changes before starting error after geting response from server
我正在 Node JS 中开发一个服务器,其中有两条路线 - Login 和 Signup 。
每当我注册时,我都会收到成功的响应,并且数据成功地存储在 MongoDB 数据库中,然后我的[nodemon] 应用程序崩溃了 - 在开始之前等待文件更改......在我的控制台中。
注意:-“问题仅在于注册而不在于登录”。
postSignup() 将在用户请求注册时调用,该注册根据架构进行验证并插入到数据库中。 我正在提供与注册相关的代码。
注册.js
const { User } = require("../../models");
const createError = require("http-errors");
const postSignup = (req, res, next) => {
//validation
const validation = User.validate(req.body);
if (validation.error) {
const error = new Error(validation.error.message);
error.statusCode = 400;
return next(error);
}
//check Existence
const user = new User(req.body);
user
.checkExistence()
.then((result) => {
if (result.check) {
const error = new Error(result.message);
error.statusCode = 409;
return next(error);
}
user.save((err) => {
if (err) {
console.log(err);
return next(createError(500));
}
res.status(201).json({
message: "User has been Successfully Created",
});
});
})
.catch((err) => {
next(createError(500));
});
};
module.exports = {
postSignup,
};
用户.js
const { dbCon } = require("../configuration");
const { userValidator, logSchema } = require("../validator");
const { hashSync, compareSync } = require("bcryptjs");
class User {
constructor(userData) {
this.userData = { ...userData };
}
save(cb) {
dbCon("users", (db) => {
try {
const hashPass = hashSync(this.userData["password"], 12);
this.userData["password"] = hashPass;
db.insertOne(this.userData);
cb();
} catch (err) {
cb(err);
}
});
}
checkExistence() {
return new Promise((resolve, reject) => {
dbCon("users", async (db) => {
try {
const user = await db.findOne({
$or: [
{ username: this.userData["username"] },
{ email: this.userData["email"] },
],
});
if (!user) {
resolve({
check: false,
});
} else if (this.userData["username"] === user.username) {
resolve({
check: true,
message: "username already exists",
});
} else if (this.userData["email"] === user.email) {
resolve({
check: true,
message: "email already exists",
});
}
} catch (err) {
reject(err);
}
});
});
}
static validate(userData) {
//console.log(userData);
return userValidator.validate(userData);
}
module.exports = User;
用户验证器.js
const Joi = require("@hapi/joi");
const schema = Joi.object({
username: Joi.string().alphanum().required().min(3).max(15),
email: Joi.string().email().required(),
password: Joi.string()
.pattern(
new RegExp(
"^(?=.*?[A-Z])(?=.*?[a-z])(?=.*?[0-9])(?=.*?[#?!@$%^&*-]).{8,}$"
)
)
.message(
"Password must contain at least eight characters, at least one number and both lower and uppercase letters and special characters"
)
.required(),
first_name: Joi.string().required(),
last_name: Joi.string().required(),
});
module.exports = {
schema
};
我遇到了同样的问题。 我不知道是什么问题,但我尝试在 mongo db connect 中更改节点版本,然后使用新的连接 URL。
如果它仍然不起作用,则尝试创建新集群并将其与新集群重新连接。
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