Testing Spring MVC Request Parameter Map and MultipartFile with MockMVC

问题:

I'm trying to create a RESTful controller endpoint with Spring MVC 3.2 to upload a file as well as a map of metadata for that file. Defined like this:

@Controller @RequestMapping("/file") public class FileServiceController {     @RequestMapping(value="/upload", method=RequestMethod.POST)     @ResponseBody     public void upload(@RequestParam MultipartFile file,                        @RequestParam String fileType,                        @RequestParam(value="metadata") Map<String, List<String>> metadata) {         // TODO: stuff with things     } } 

which I'm then trying to test like this:

@RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(classes = { AppConfig.class }) @WebAppConfiguration public class ProductIngestServiceControllerTest {      @Autowired     private WebApplicationContext wac;     private MockMvc mockMvc;     @Mock     private FileServiceController controller;      @Before     public void setup() {         mockMvc = MockMvcBuilders.standaloneSetup(controller).build();     }      @Test     public void testUpload() {         MockMultipartFile mockFile = new MockMultipartFile("file", "This is a test file".getBytes());         Map<String, List<String>> metadata = new HashMap<>();         metadata.put("custom0", Arrays.asList("test1", "test2"));         metadata.put("custom1", Arrays.asList("test3", "test4", "test5"));         metadata.put("custom2", Arrays.asList("test6"));          Gson gson = new Gson();         String mapStr = gson.toJson(metadata);          mockMvc.perform(fileUpload(baseURL + "/test")             .file(mockFile)             .param("fileType", "test_type")             .param("metadata", mapStr))             .andDo(print())             .andExpect(status().isOk())             .andReturn();     } } 

I'm expecting the map to contain just the "customX" entries, but it contains all request parameters instead (except the MultipartFile...).

If I try:

public void upload(@RequestParam MultiValueMap parameters) {     ... } 

the MultipartFile isn't included in that map either.

Am I going about this the wrong way? The only solution I can come up with at the moment is to just use a String for the metadata RequestParam and do something like:

ObjectMapper mapper = new ObjectMapper(); JsonFactory factory = mapper.getJsonFactory();  JsonParser jp = factory.createJsonParser(testMap); Map<String, List<String>> map = jp.readValueAs(Map.class); 

but that feels dirty.

Any help would be greatly appreciated. Thanks!

回答1:

Use MockHttpServletRequest.

@Before public void before() {     MockitoAnnotations.initMocks(this);     this.mockMvc = MockMvcBuilders.webAppContextSetup(this.wac)             .dispatchOptions(true).build();     MockHttpServletRequest request;= new MockHttpServletRequest();     Map<String, List<String>> metadata=request.getParameter("metadata"); } 

文章来源: Testing Spring MVC Request Parameter Map and MultipartFile with MockMVC