Spring MVC 测试多文件上传

Question

我有控制器，它处理多个文件上传：

 @PostMapping("/import")
 public void import(@RequestParam("files") MultipartFile[] files, HttpServletRequest request) {
    assertUploadFilesNotEmpty(files);
    ...
}

我想测试一下

    @Test
public void importTest() throws Exception {
    MockMultipartFile file = new MockMultipartFile("file", "list.xlsx", MIME_TYPE_EXCEL, Files.readAllBytes(Paths.get(excelFile.getURI())));
    mvc.perform(fileUpload("/import").file(file).contentType(MIME_TYPE_EXCEL)).andExpect(status().isOk());
}

问题是 MockMvc 使用 multipartFiles 作为保存上传文件的参数的名称创建 MockHttpRequest。我的控制器希望这些文件位于“文件”参数中。

是否可以告诉 spring 应该在给定名称下的请求中传递多个文件？

Answer 1

MockMultiPartFile使用名称创建两个实例files

完整的工作示例，添加了 Json 请求正文以及以下多个文件：

@PostMapping(consumes=MediaType.MULTIPART_FORM_DATA_VALUE)
public void addProduct(@RequestPart(value="addProductRequest") @Valid AddUpdateProductRequest request,
                             @RequestPart(value = "files") final List<MultipartFile> files) throws Exception{

    request.setProductImages(files);
    productService.createProduct(request);
}


@Test
public void testUpdateProduct() throws Exception {


    AddUpdateProductRequest addProductRequest = prepareAddUpdateRequest();

    final InputStream inputStreamFirstImage = Thread.currentThread().getContextClassLoader().getResourceAsStream("test_image.png");
    final InputStream inputStreamSecondImage = Thread.currentThread().getContextClassLoader().getResourceAsStream("test_image2.png");

    MockMultipartFile jsonBody = new MockMultipartFile("addProductRequest", "", "application/json", JsonUtils.toJson(addProductRequest).getBytes());
    MockMultipartFile file1 = new MockMultipartFile("files", "test_image.png", "image/png", inputStreamFirstImage);
    MockMultipartFile file2 = new MockMultipartFile("files", "test_image2.png", "image/png", inputStreamSecondImage);


    ResultMatcher ok = MockMvcResultMatchers.status().isOk();
    mockMvc.perform(MockMvcRequestBuilders.fileUpload("/add-product")
                    .file(file1)
                    .file(file2)
                    .file(jsonBody)
                    .contentType(MediaType.MULTIPART_FORM_DATA_VALUE))
                .andDo(MockMvcResultHandlers.log())
                .andExpect(ok)
                .andExpect(content().string("success"));
}