java - 如何使用 post 方法将文件上传到 spring mvc RestController

Question

我有以下 Controller :

@RequestMapping(value = "/uploadCert", method = RequestMethod.POST)
@ResponseBody
public String uploadCert( @RequestParam(value = "file", required = false) List<MultipartFile> files){

        for (MultipartFile file : files) {
            String path = "tempFolder";
            File targetFile = new File(path);
            try {
                FileUtils.copyInputStreamToFile(file.getInputStream(), targetFile);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return "done";
    }

通过以下单元测试进行测试:

@Test
    public void uploadCertFile() throws Exception {
        //given

        MockMultipartFile file = new MockMultipartFile("file", "test.txt",  "text/plain", "bar".getBytes());

        MockHttpServletRequestBuilder request = MockMvcRequestBuilders.fileUpload("/uploadCert").file(file);

        System.out.println(request);
        //when
        ResultActions resultActions = mockMvc.perform(request);

        //then
        MvcResult mvcResult = resultActions.andReturn();
        assertEquals(200, mvcResult.getResponse().getStatus());
        File savedFile = new File("./test.txt");
        assertTrue(savedFile.exists());
        savedFile.delete();
    }

它工作得很好，我有另一个java代码服务器，需要将文件上传到上面的 Controller 。我试图寻找在代码中使用的 MockMVCRequestMapping 的并行项，但找不到它，我应该使用什么来从 java 代码发送此 Web 请求？

Answer 1

你可以这样做:

    @RequestMapping(value = "/upload", method = RequestMethod.POST)
    public ResponseEntity<String> uploadDocument(MultipartHttpServletRequest request, HttpServletResponse response) throws IOException {
        Iterator<String> iterator = request.getFileNames();
        MultipartFile multipartFile = null;

        while (iterator.hasNext()) {
            multipartFile = request.getFile(iterator.next());

            final String fileName = multipartFile.getOriginalFilename();
            final String fileSize = String.valueOf(multipartFile.getSize());

            //do rest here
        }
    }