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多部分表单请求抛出：不存在所需的MultipartFile参数'image'

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我尝试使用邮递员将图像上传到服务器 . 我使用spring来制作其余的api如下：

PostMan mutlipart request

@RequestMapping(value = "/uploadPrescription", method =RequestMethod.POST)
  public  ResponseEntity<ResponseSuccessData> uploadPatientPrescription(
        @RequestBody  @RequestParam("image") MultipartFile image)
        throws  IOException {

但它抛出一个错误：

org.springframework.web.bind.MissingServletRequestParameterException: 
      Required MultipartFile parameter 'image' is not present

正如你在邮递员中看到的那样，关键名称是'image'，而在api中，api也是@RequestParam（“image”） .

在内容类型中设置值 - Content-type = multipart / form-data，boundary =' - abc'

这是我的多部分 spring 配置 -

@Bean
  public CommonsMultipartResolver multipartResolver() {

  CommonsMultipartResolver commonsMultipartResolver = new      CommonsMultipartResolver();
//commonsMultipartResolver.setMaxUploadSize(-1);
return commonsMultipartResolver;

}

可能是什么问题呢？

java spring multipartform-data postman

5 回答

  • 0

    请删除 Headers 部分

    enter image description here

    请删除邮递员 Headers 部分中的 - Content-Type：multipart / form-data; boundary ='abc'设置

    回复于
  • 1
    @RestController
public class UserOfferController {

// upload image 
    @RequestMapping(value = "/uploadimage", method = RequestMethod.POST)
    public ResponseEntity<ResponseObjectBean> uploadFile(@RequestParam("uploadedFile") MultipartFile file) {
        int statusCode;
        String msg;
        Object data = null;
        long maxsize = configuredValue.getFileMaxAcceptedSize();

        if (!file.isEmpty()) {

                String name = file.getOriginalFilename();

                String imagePath = "path to save your image ";


                try {
                    byte[] bytes = file.getBytes();
                    BufferedOutputStream stream = new BufferedOutputStream(new FileOutputStream(new File(imagePath)));
                    stream.write(bytes);
                    statusCode = 200;
                    msg = "DONE";
                    data = true;

                }  catch (Exception e) {
                    e.printStackTrace();
                    statusCode = 500;
                    msg = "FAIL";
                    data = false;

                }

        } else {
            statusCode = 500;
            msg = "FAIL";
            data = false;
        }
        responseData.setStatusCode(statusCode);
        responseData.setStatusMsg(msg);
        responseData.setData(data);
        return new ResponseEntity<ResponseObjectBean>(responseData, HttpStatus.OK);
    }

    }

    在spring.xml中添加这些行

    <!-- mutipart upload configuration -->
    <bean id="multipartResolver"
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <!-- max upload size in bytes -->
        <property name="maxUploadSize" value="1024" />
        <!-- max size of file in memory (in bytes) -->
        <property name="maxInMemorySize" value="2048" />
    </bean>

    enter image description here

    回复于
  • 2

    除了Abhijit Chowdhury的回答，如果你仍然使用spring security，你可以删除 Content-Type 并将你的令牌保留在 Headers 中，不需要从 Headers 中删除所有内容 .

    此外，重新启动邮递员很重要 .

    回复于
  • 3

    1.在POSTMAN中删除 Headers 部分 .

    2.在您的API中：

    @RequestMapping(value = "/uploadPrescription", method =RequestMethod.POST)
      public  ResponseEntity<ResponseSuccessData> uploadPatientPrescription(
            @RequestBody  @RequestParam("image") MultipartFile image)
            throws  IOException {}

    添加以下内容：

    consumes = MediaType.MULTIPART_FORM_DATA_VALUE

    所以它变成：

    @RequestMapping(value = "/uploadPrescription", method =RequestMethod.POST, consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
  public  ResponseEntity<ResponseSuccessData> uploadPatientPrescription(
        @RequestBody  @RequestParam("image") MultipartFile image)
        throws  IOException {}
    回复于
  • -1

    将 @RequestBody @RequestParam("image") 替换为 @RequestBody("image") . 第一个语句无效，请参阅 - Spring uploading files .

    回复于

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