spring + junit + mockito : automatically mock @Autowired

the idea came from this post: http://java.dzone.com/tips/automatically-inject-mocks
the only problem i've found with this setup is that i need to manually reset mock objects between tests because mocks are created only once.
but then i found out the @DirtiesContext annotation which forces the destruction and recreation of the Spring context after each test, so new mocks are created each time.

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("/applicationContextTest.xml")
public class MainControllerTest {

    @Autowired
    MainController mainController ;

    MyService myService ;

    @Before
    public void setupTest() {

        myService = (MyService)ReflectionTestUtils.getField(mainController,"myService") ;
    }

    @Test
    @DirtiesContext
    public void testMock1() throws Exception {
        when(myService.getTestString()).thenReturn("MOCK!") ;
        Assert.assertEquals("MOCK!",mainController.getString()) ;
        verify(myService).doSomething("MOCK!");
    }

    @Test
    @DirtiesContext
    public void testMock2() throws Exception {
        when(myService.getTestString()).thenReturn("MOCK!") ;
        verify(myService,never()).doSomething("MOCK!");
    }
}