SpringBoot/src/main/java/com/example/springboot/service/UserService.java

package com.example.springboot.service;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.example.springboot.entity.User;
import com.example.springboot.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class UserService extends ServiceImpl<UserMapper,User> {
    public boolean saveUser(User user) {
        /*if (user.getId() == null){
            return save(user);
        }else {
            return updateById(user);
        }*/
        return saveOrUpdate(user);

    }

    /*@Autowired
    UserMapper userMapper;

    public int save(User user){
        if (user.getId() == null){
            return userMapper.insert(user);
        } else {
            return userMapper.update(user);
        }
    }*/

}