Spring基于注解TestContext 测试框架使用问题

import cn.itcast.mybatis.pojo.User;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.AbstractTransactionalJUnit4SpringContextTests;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({"classpath*:mybatis-config2.xml"}) //载入配置xml文件
public class UserMapperTest3 extends   AbstractTransactionalJUnit4SpringContextTests {
	@Autowired
	private UserMapper userMapper;

    @Test
    public void testQueryUserByUserNameAndPassword() {
        User user = this.userMapper.queryUserByUserNameAndPassword("zw", "2");
        System.out.println(user);
    }
}