java - 错误消息 = 所需的 MultipartFile 参数 'file' 不存在

Question

测试一个spring文件上传表单，controlrr签名是这样的

@RequestMapping(value = "upload", method = RequestMethod.POST)
@ResponseBody
public void upload(@RequestParam("file") MultipartFile multipartFile) {}

然后测试这个

final MockMultipartFile file 
  = new MockMultipartFile("content", "myFile.txt", "text/plain", "hello".getBytes());

MockHttpServletRequestBuilder mockHttpServletRequestBuilder = 
  .fileUpload("/upload/")
  .file(file)
  .accept(MediaType.APPLICATION_JSON);

但我收到上述消息:错误消息 = Required MultipartFile parameter 'file' is not present

Answer 1

您将参数命名为"file"而不是“内容”:

改变:

new MockMultipartFile("content", "myFile.txt", "text/plain", "hello".getBytes());

收件人:

new MockMultipartFile("file", "myFile.txt", "text/plain", "hello".getBytes());