MyBatis学习笔记-注解SQL多个参数查询异常处理

MyBatis 注解SQL查询，单个参数无需处理可以正常返回结果

@Select("SELECT * FROM USER WHERE ACCOUNT = #{account}")

User readUserByAccount(String account) throws DataAccessException;

多个参数查询不做处理会报异常

@Select("SELECT * FROM USER WHERE ACCOUNT = #{account} AND PASSWORD = #{password}")

User readUserByAccountAndPassword(String account, String password) throws DataAccessException;

Caused by: org.apache.ibatis.binding.BindingException: Parameter 'account' not found. Available parameters are [1, 0, param1, param2]

解决方法一：参数前面添加Param注解

@Select("SELECT * FROM USER WHERE ACCOUNT = #{account} AND PASSWORD = #{password}")

User readUserByAccountAndPassword(@Param("account") String account, @Param("password") String password) throws DataAccessException;

解决方法二：使用#{0}、#{1}

@Select("SELECT * FROM USER WHERE ACCOUNT = #{0} AND PASSWORD = #{1}")

User readUserByAccountAndPassword(String account, String password) throws DataAccessException;

 

解决方法三：使用Map，key与{}里面参数名称保持一致

@Select("SELECT * FROM USER WHERE ACCOUNT = #{account} AND PASSWORD = #{password}")

User readUserByAccountAndPassword(Map params) throws DataAccessException;