注解开发中一对多的运用和使用注意项

package com.hope.dao;

import com.hope.domain.User;
import com.sun.xml.internal.bind.v2.model.core.ID;
import org.apache.ibatis.annotations.*;
import org.apache.ibatis.mapping.FetchType;

import java.util.List;

/**
 * @author newcityman
 * @date 2019/11/15 - 22:59
 */
public interface IUserDao {
    /**
     * 查询所有用户的信息
     * @return
     */
    @Select(value = "select * from user")
    @Results(id = "userMap",value = {
            @Result(id = true,column ="id" ,property ="userId" ),
            @Result(column = "username" ,property = "userName"),
            @Result(column = "sex",property = "userSex"),
            @Result(column = "address",property = "userAddress"),
            @Result(column = "birthday",property = "userBirthday"),
            @Result(column = "id",property = "accounts",
            many =@Many(select = "com.hope.dao.IAccountDao.findAccountById"
            ,fetchType = FetchType.LAZY)),
    })
    public List<User> findAll();

    /**
     * 根据用户的id，查询用户
     * @param id
     * @return
     */
    @Select("select * from user where id=#{id}")
    @ResultMap(value ={"userMap"} )
    User findOne(Integer id);

    /**
     * 根据用户名模糊查询
     * @param username
     * @return
     */
    @Select("select * from user where username like #{username}")
    @ResultMap("userMap")
    List<User> findByName(String username);


}