如何用MockRestServiceServer模拟RestTemplate？

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.client.MockRestServiceServer;
import org.springframework.web.client.RestTemplate;

import static org.springframework.test.web.client.match.MockRestRequestMatchers.*;
import static org.springframework.test.web.client.response.MockRestResponseCreators.*;

@RunWith(SpringRunner.class)
@SpringBootTest
public class RestTemplateMockTest {

    @Mock
    private RestTemplate restTemplate;

    private MockRestServiceServer mockServer;

    @Before
    public void setUp() {
        MockitoAnnotations.initMocks(this);
        mockServer = MockRestServiceServer.createServer(restTemplate);
    }

    @Test
    public void testMockRestTemplate() {
        // 设置预期请求和响应
        mockServer.expect(requestTo("/api/user/1"))
                .andExpect(method(HttpMethod.GET))
                .andRespond(withSuccess("{\"id\": 1, \"name\": \"John\"}", MediaType.APPLICATION_JSON));

        // 执行测试
        String response = restTemplate.getForObject("/api/user/1", String.class);

        // 验证请求和响应
        mockServer.verify();
        assertThat(response).isEqualTo("{\"id\": 1, \"name\": \"John\"}");
    }
}