@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration(value = "src/main/webapp")
@ContextHierarchy({
        @ContextConfiguration(name = "parent", locations = "classpath:./spring/applicationContext.xml")
})
@TransactionConfiguration(transactionManager = "transactionManager", defaultRollback = true)
@Transactional
public class MessageTest {
    @Autowired
    private WebApplicationContext wac;
    private MockMvc mockMvc;

    @Before
    public void setUp() {
        mockMvc = MockMvcBuilders.webAppContextSetup(wac).build();
    }

    @Test
    public void testTempPage() throws Exception {
        mockMvc.perform(MockMvcRequestBuilders.get("/msg/temp/page/v1"));
    }

    @Test
    @Rollback(true)
    public void testAddTemp() throws Exception {
        mockMvc.perform(MockMvcRequestBuilders.post("/msg/temp/add/v1").param("name", "新测试3")
                .param("content", "nice roll"));  
    }
}

一般来说在你的测试类上加上@Transactional就足够了，Spring默认是会回滚的。
更简便的做法：直接继承 AbstractTransactionalJUnit4SpringContextTests