完成后端登录dto验证

tone-page-server/src/user/user.service.ts

@@ -0,0 +1,24 @@
+import { Injectable } from '@nestjs/common';
+import { InjectRepository } from '@nestjs/typeorm';
+import { User } from './user.entity';
+import { Repository } from 'typeorm';
+
+@Injectable()
+export class UserService {
+    constructor(
+        @InjectRepository(User)
+        private readonly userRepository: Repository<User>,
+    ) { }
+
+    async findOne(options: Partial<Pick<User, 'userId' | 'username' | 'phone' | 'email'>>): Promise<User | null> {
+        if (Object.keys(options).length === 0) {
+            return null;
+        }
+        return this.userRepository.findOne({ where: options });
+    }
+
+    async create(user: Partial<User>): Promise<User> {
+        const newUser = this.userRepository.create(user);
+        return this.userRepository.save(newUser);
+    }
+}