Spring+Mybatis 查询所有数据时发生异常：: There is no getter for

Spring+Mybatis框架整合时,根据条件查询数据，发生异常

Caused by: : There is no getter for property named 'sname' in 'class '

文件：

<select  parameterType="string" resultMap="userinfoMap">
		select * from userinfo where sname like '%${sname}%'
	</select>

UserinfoMapper接口:

public List<Userinfo> findAll(String sname);

解决方法:在参数前加@Param标签

public List<Userinfo> findAll(@Param("sname") String sname);