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1.全局配置文件是否注册了UserMapperConfig Usermapper.xml文件 <mappers> <mapper resource="sqlmap/UserMapper.xml" /> </mappers> 2.在Usermapper.xml中的namespace是否写为mapper接口地址 <mapper names...

1.输入映射形式 <mapper namespace="mapper.testMybatisMapper"> <select id=&

mapper.xml 动态查询 <select id="findUserListDy" parameterType="srj.po.Usersearch" resultType="srj.po.User"> select * from userinfo <where> <if test="us.