crud/main/java/com/service/impl/UserServiceImpl.java

package com.service.impl;

import com.dao.RoleDao;
import com.dao.UserDao;
import com.domain.Role;
import com.domain.User;
import com.mapper.RoleMapper;
import com.mapper.UserMapper;
import com.service.UserService;
import com.utils.SqlSessionFactoryUtils;
import org.apache.ibatis.session.SqlSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.EmptyResultDataAccessException;
import org.springframework.stereotype.Service;

import java.util.List;
@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private RoleMapper roleMapper;

    public void setRoleMapper(RoleMapper roleMapper) {
        this.roleMapper = roleMapper;
    }

    public void setUserMapper(UserMapper userMapper) {
        this.userMapper = userMapper;
    }


    public List<User> list() {
        List<User> userList = userMapper.findAll();
        //封装userList中的每一个User的roles数据
        for (User user : userList) {
            //获得user的id
            Long id = user.getId();
            //将id作为参数 查询当前userId对应的Role集合数据
            List<Role> roles = roleMapper.findRoleByUserId(id);
            user.setRoles(roles);
        }
        return userList;

    }

    public void save(User user, Long[] roleIds) {
        //第一步 向sys_user表中存储数据
        Long userId = userMapper.save(user);
        //第二步 向sys_user_role 关系表中存储多条数据
        userMapper.saveUserRoleRel(userId,roleIds);
    }

    public void del(Long userId) {
        //1、删除sys_user_role关系表
        userMapper.delUserRoleRel(userId);
        //2、删除sys_user表
        userMapper.del(userId);
    }

    public User login(String username, String password) {
        try {
            User user = userMapper.findByUsernameAndPassword(username, password);
            return user;
        }catch (EmptyResultDataAccessException e){
            return null;
        }
    }






    /*private UserDao userDao;
    public void setUserDao(UserDao userDao) {
        this.userDao = userDao;
    }

    private RoleDao roleDao;
    public void setRoleDao(RoleDao roleDao) {
        this.roleDao = roleDao;
    }

    public List<User> list() {
        List<User> userList = userDao.findAll();
        //封装userList中的每一个User的roles数据
        for (User user : userList) {
            //获得user的id
            Long id = user.getId();
            //将id作为参数 查询当前userId对应的Role集合数据
            List<Role> roles = roleDao.findRoleByUserId(id);
            user.setRoles(roles);
        }
        return userList;
    }

    public void save(User user, Long[] roleIds) {
        //第一步 向sys_user表中存储数据
        Long userId = userDao.save(user);
        //第二步 向sys_user_role 关系表中存储多条数据
        userDao.saveUserRoleRel(userId,roleIds);
    }

    public void del(Long userId) {
        //1、删除sys_user_role关系表
        userDao.delUserRoleRel(userId);
        //2、删除sys_user表
        userDao.del(userId);
    }

    public User login(String username, String password) {
        try {
            User user = userDao.findByUsernameAndPassword(username, password);
            return user;
        }catch (EmptyResultDataAccessException e){
            return null;
        }
    }*/


}