如何为Rest模板编写Mockito Junit测试用例？

<dependency>
    <groupId>org.mockito</groupId>
    <artifactId>mockito-core</artifactId>
    <version>2.0.2-beta</version>
    <scope>test</scope>
</dependency>

<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.12</version>
    <scope>test</scope>
</dependency>

import org.junit.Before;
import org.junit.Test;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;
import org.springframework.web.client.RestTemplate;

import static org.mockito.Mockito.*;

public class RestTemplateTest {

    @Mock
    private RestTemplate restTemplate;

    @InjectMocks
    private YourRestService yourRestService;

    @Before
    public void setup() {
        MockitoAnnotations.initMocks(this);
    }

    @Test
    public void testRestTemplate() {
        // 设置Mock的返回值
        String expectedResponse = "Mocked Response";
        when(restTemplate.exchange(anyString(), eq(HttpMethod.GET), any(), eq(String.class)))
                .thenReturn(ResponseEntity.ok(expectedResponse));

        // 调用被测试的方法
        String actualResponse = yourRestService.callRestTemplate();

        // 验证结果
        assertEquals(expectedResponse, actualResponse);

        // 验证RestTemplate的exchange方法是否被调用
        verify(restTemplate, times(1)).exchange(anyString(), eq(HttpMethod.GET), any(), eq(String.class));
    }
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;

@Service
public class YourRestService {

    @Autowired
    private RestTemplate restTemplate;

    public String callRestTemplate() {
        String url = "http://example.com/api/endpoint";
        ResponseEntity<String> response = restTemplate.exchange(url, HttpMethod.GET, null, String.class);
        return response.getBody();
    }
}