java如何从ServletInputStream读取multipart/formdata头并将内容加载到临时文件中

Question

我有一个Web服务在数据库中发布一个文件，我真的需要显示HTTP请求的主体，以检查客户端的实现是否正确。 我在我的Wildfly服务器上尝试了undertow filter配置，它提供了一些信息，但没有提供多部分/表单数据头，因此我使用了一个RequestLoggingFilter类，该类实现了ContainerRequestFilter来记录使用resteasy facade时的正文

我的门面上有这样的注解：

    @POST
    @Logged
    @Consumes(MediaType.MULTIPART_FORM_DATA)
    @Produces(MediaType.TEXT_PLAIN)

它可以工作，但当我使用ServletInputStream来显示主体时，我正在将整个文件加载到RAM中。如果我使用一个“大”文件，我的方法将抛出一个异常，facade将不会获得一个打开的InputStream

11:21:58,943 TRACE [project.ws.utils.RequestLoggingFilter] (default task-1) Error bodyio.undertow.server.RequestTooBigException: UT000020: Connection terminated as request was larger than 10485760
11:21:58,945 TRACE [project.ws.utils.RequestLoggingFilter] (default task-1) --------------------------------------------------------
11:21:58,954 WARN  [org.apache.james.mime4j.parser.MimeEntity] (default task-1) Unexpected end of headers detected. Higher level boundary detected or EOF reached.
11:21:58,956 WARN  [org.apache.james.mime4j.parser.MimeEntity] (default task-1) Invalid header encountered
11:21:58,960 WARN  [org.apache.james.mime4j.parser.MimeEntity] (default task-1) Body part ended prematurely. Boundary detected in header or EOF reached.
11:21:58,970 ERROR [project.ws.handler.exceptions.GlobalExceptionMapper] (default task-1) RESTEASY007500: Could find no Content-Disposition header within part: java.lang.RuntimeException: RESTEASY007500: Could find no Content-Disposition header within part

日志类：

@Logged
@Provider
public class RequestLoggingFilter implements ContainerRequestFilter{
    
    private static final Logger LOGGER = LoggerFactory.getLogger(RequestLoggingFilter.class);

    @Override
    public void filter(ContainerRequestContext requestContext) throws IOException {
        if (!LOGGER.isTraceEnabled()) {
            return;
        }
        LOGGER.trace("--------------------------------------------------------");
        LOGGER.trace("URI=" + requestContext.getUriInfo().getPath());
        LOGGER.trace("Content length=" + requestContext.getLength());
        LOGGER.trace("Content type=" + requestContext.getMediaType());
        LOGGER.trace("Methode=:" + requestContext.getMethod());
        LOGGER.trace("Cookies=:" + requestContext.getCookies());
        LOGGER.trace("MediaTypes=" + requestContext.getAcceptableMediaTypes());
        LOGGER.trace("AceptableLanguages=" + requestContext.getAcceptableLanguages());
        LOGGER.trace("Date=" + requestContext.getDate());
        LOGGER.trace("   Header:");
        requestContext.getHeaders().forEach((key, value) -> {
            LOGGER.trace("       header=" + key + " : " + value);
        });
        try {
            if (requestContext.hasEntity()) {
                String result = IOUtils.toString(requestContext.getEntityStream(), StandardCharsets.UTF_8);
                LOGGER.trace("   Body:");
                Scanner scanner = new Scanner(result);
                while (scanner.hasNextLine()) {
                    LOGGER.trace("        " + scanner.nextLine());
                }
                scanner.close();
                requestContext.setEntityStream(CharSource.wrap(result).asByteSource(StandardCharsets.UTF_8).openStream());
            }
        } catch (Exception e) {
            LOGGER.trace("Error body" + e);
        }
        LOGGER.trace("--------------------------------------------------------");
    }

}

日志：

 --------------------------------------------------------
URI=/reception
Content length=259
Content type=multipart/form-data;boundary="----=_Part_43_341076338.1636107376952"
Methode=:POST
Cookies=:{}
MediaTypes=[*/*]
AceptableLanguages=[]
Date=null
    Header:
       header=Accept-Encoding : [gzip,deflate]
       header=apiKey : [test]
       header=Connection : [Keep-Alive]
       header=Content-Length : [259]
       header=Content-Type : [multipart/form-data; boundary="----=_Part_43_341076338.1636107376952"]
       header=Host : [localhost:9000]
       header=MIME-Version : [1.0]
       header=User-Agent : [Apache-HttpClient/4.1.1 (java 1.5)]
    Body:
        
         ------=_Part_43_341076338.1636107376952
         Content-Type: text/plain; charset=Cp1252; name=file3.tmp
         Content-Transfer-Encoding: binary
         Content-Disposition: form-data; name="file"; filename="file3.tmp"         
        ------=_Part_43_341076338.1636107376952--
 --------------------------------------------------------

如何在ContainerRequestFilter中使用ServletInputStream，而不加载整个文件、记录多部分/表单数据头并让InputStream为facade打开？（Java 8）