Question

我必须上传100MB文件。我的前端部分是Angular 4，后端部分是Java和Spring 4。我将其公开为REST端点。一段时间后，我上传文件后，连接中断，并且它不向前端返回任何内容。

@SuppressWarnings("unchecked")
    @RequestMapping(value = "/insertDoc.action", method = RequestMethod.POST, produces = MediaType.APPLICATION_JSON_VALUE)
    public ResponseEntity<Map<String, Object>> insertDoc(final HttpServletRequest request,
            final HttpServletResponse response, @RequestParam(name = "docType", required = false) final String docType) {
        List<DocumentMetadataVO> docIdList = new ArrayList<DocumentMetadataVO>();
        try {

            boolean isMultipart = ServletFileUpload.isMultipartContent(new ServletRequestContext(request));

            if (isMultipart) {
                DiskFileItemFactory factory = new DiskFileItemFactory();
                ServletFileUpload upload = new ServletFileUpload(factory);
                upload.setFileSizeMax(MAX_FILE_SIZE);
                upload.setSizeMax(MAX_REQUEST_SIZE);

                List<FileItem> items = upload.parseRequest(request);
                for (FileItem fileItem : items) {
                    DocumentMetadataVO documentMetadataVO = new DocumentMetadataVO();
                    documentMetadataVO.setFileData(fileItem.get());
                    documentMetadataVO.setDocumentName(fileItem.getName());
                    documentMetadataVO.setUploadDate(new Date());
                    logger.info("File Name is::" + documentMetadataVO.getDocumentName());
                    documentMetadataVO.setDocType(docType);
                    String docId = commonService.insertDocument(request, documentMetadataVO);
                    documentMetadataVO.setDocId(docId);
                    docIdList.add(documentMetadataVO);
                }
            }

        } catch (Exception e) {

            logger.error(e);
            return new ResponseEntity<Map<String, Object>>(getModelMapError(e.getMessage()),
                    HttpStatus.INTERNAL_SERVER_ERROR);
        }

        return new ResponseEntity<Map<String, Object>>(getMap(docIdList), HttpStatus.OK);
    }

Answer 1

在Spring App中没有堆栈跟踪的大文件上传失败表明Tomcat配置错误。

如果文件太大（即使您设置了spring.http.multipart.max-file-size和spring.http.multipart.max-request-size属性，Tomcat也会自动断开连接。）

因此，要解决此问题，您应该配置tomcat以允许上传大文件

打开$TOMCAT_HOME/webapps/manager/WEB-INF/web.xml并编辑以下属性：

<!-- 150MB max -->
<multipart-config>
   <max-file-size>157286400</max-file-size>
   <max-request-size>209715200</max-request-size>
   <file-size-threshold>0</file-size-threshold>
</multipart-config>

Answer 2

也可以在应用程序xml文件中指定多部分解析器的大小。您可以通过该程序或通过编程方式完成

应用程序xml

要将其添加到您的xml文件中，您可以像这样添加一个bean：

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
  <property name="maxUploadSize" value="16777215" />
</bean>

以编程方式

要以编程方式且可能是可配置的方式添加它，请尝试以下操作：

/**
 * Configuration to set the multipart Resolver bean and the max upload size
 *
 */
@Configuration
@Component
public class MultipartResolverBeanConfig {


  /**
   * Create the multipart resolver bean
   * Set the maximum upload file size 
   * @return
   */
  @Bean(name="multipartResolver")
  public CommonsMultipartResolver multipartResolver() {
    CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver();
    multipartResolver.setMaxUploadSize(157286400L);
    return multipartResolver;
  }
}

无法使用ServletFileUpload上传100MB文件

2 个答案: