mybatis注解開發實體類屬性和數據庫字段不對應問題

/**
     * 查詢所有用戶
     * @return
     */
    @Select("select * from user")
    @Results(id="userMap",value={
            @Result(id=true,column = "id",property = "userId"),
            @Result(column = "username",property = "userName"),
            @Result(column = "address",property = "userAddress"),
            @Result(column = "sex",property = "userSex"),
            @Result(column = "birthday",property = "userBirthday"),
    List<User> findAll();

為了解決重復使用，那就要讓他變成一個有id的整體，其他地方要用就直接調用 
@ResultMap(“id”) 
@Result中通過id屬性引用這個resultMap

/**
     * 根據id查詢用戶
     * @param userId
     * @return
     */
    @Select("select * from user  where id=#{id} ")
    @ResultMap("userMap")
    User findById(Integer userId);