mybatis中获取参数
1、${parameter}方式:
parameter是数字时用;模糊查询%${parameter}%时用。
例:select * from account where userId = ${parameter}; ==> select * from account where userId = 123;
select * from account where userId like %${parameter}%; ==> select * from account where userId like %123%; ==> 如果模糊的字段是字符串就在外面加个引号
2、#{parameter}方式:
这种方式获取的是字符串形式的结果。
例:select * from account where userId = #{parameter}; ==> select * from account where userId = '123';