@SpringBootTest
@RunWith(SpringJUnit4ClassRunner.class)
public class OssControllerTest {
@Autowired
private WebApplicationContext wac;
private MockMvc mvc;
@Before
public void setupMockMvc(){
mvc = MockMvcBuilders.webAppContextSetup(wac).build(); //初始化MockMvc物件
}
@Test
public void uploadFilePublic() throws 
 
Exception {
File file = new File("C:\\Users\\Administrator\\Desktop\\xxxx.jpg");
//檔案之外的引數
String key = OssUtils.createFileKey(file.getName(), null);
MockMultipartFile firstFile = new MockMultipartFile("file", "xxxx.jpg",
MediaType.TEXT_PLAIN_VALUE, new FileInputStream(file));
mvc.perform(MockMvcRequestBuilders
 
.fileUpload("/ossService/uploadFilePublic")
                .file(firstFile)//檔案
.param("key", key))//引數
.andExpect(MockMvcResultMatchers.status().isOk());
LogUtils.info("檔案的key為:"+key);
    }
}

參考部落格：http://tobato.iteye.com/blog/2315174