javax.servlet.ServletResponse#reset ( )源码实例Demo

@SuppressWarnings("TypeMayBeWeakened")
@ExceptionHandler
@ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
public ModelAndView handleGeneralException(
        final Exception e,
        final HttpServletRequest request,
        final ServletResponse response
) {
    response.reset();

    return controllerUtils.buildErrorModelAndView(new ErrorModelAndViewInfo.Builder()
            .setRequest(request)
            .setMainMessageCode(HOD_ERROR_MESSAGE_CODE_INTERNAL_MAIN)
            .setSubMessageCode(HOD_ERROR_MESSAGE_CODE_INTERNAL_SUB)
            .setStatusCode(HttpServletResponse.SC_INTERNAL_SERVER_ERROR)
            .setContactSupport(true)
            .setException(e)
            .build());
}
 

@SuppressWarnings("TypeMayBeWeakened")
@ExceptionHandler
@ResponseStatus(HttpStatus.NOT_FOUND)
public ModelAndView handleViewDocumentNotFoundException(
        final ViewDocumentNotFoundException e,
        final HttpServletRequest request,
        final ServletResponse response
) {
    response.reset();

    final String reference = e.getReference();

    log.info(Markers.AUDIT, "TRIED TO VIEW NON EXISTENT DOCUMENT WITH REFERENCE {}", reference);

    return controllerUtils.buildErrorModelAndView(new ErrorModelAndViewInfo.Builder()
            .setRequest(request)
            .setMainMessageCode("error.documentNotFound")
            .setSubMessageCode("error.referenceDoesNotExist")
            .setSubMessageArguments(new Object[]{reference})
            .setStatusCode(HttpStatus.NOT_FOUND.value())
            .setContactSupport(true)
            .setException(e)
            .build());
}
 

@SuppressWarnings("TypeMayBeWeakened")
@ExceptionHandler
@ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
public ModelAndView handleViewServerErrorException(
        final ViewServerErrorException e,
        final HttpServletRequest request,
        final ServletResponse response
) {
    response.reset();

    final String reference = e.getReference();

    log.info(Markers.AUDIT, "TRIED TO VIEW DOCUMENT WITH REFERENCE {} BUT VIEW SERVER RETURNED AN ERROR PAGE", reference);

    return controllerUtils.buildErrorModelAndView(new ErrorModelAndViewInfo.Builder()
            .setRequest(request)
            .setMainMessageCode("error.viewServerErrorMain")
            .setSubMessageCode("error.viewServerErrorSub")
            .setSubMessageArguments(new Object[]{reference})
            .setStatusCode(HttpStatus.INTERNAL_SERVER_ERROR.value())
            .setContactSupport(true)
            .setException(e)
            .build());
}
 

@ExceptionHandler
@ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
public ModelAndView handleException(
        final Exception e,
        final HttpServletRequest request,
        final ServletResponse response
) {
    response.reset();

    return controllerUtils.buildErrorModelAndView(
            new ErrorModelAndViewInfo.Builder()
                    .setRequest(request)
                    .setMainMessageCode("error.internalServerErrorMain")
                    .setSubMessageCode("error.internalServerErrorSub")
                    .setSubMessageArguments(null)
                    .setStatusCode(HttpStatus.INTERNAL_SERVER_ERROR.value())
                    .setContactSupport(true)
                    .setException(e)
                    .build()
    );
}
 

@Override
public void forward(ServletRequest request, ServletResponse response)
    throws IOException, ServletException
{

  if (!(request instanceof HttpServletRequest && response instanceof HttpServletResponse)) {
    throw new ServletException("Must be http request");
  }

  if (response.isCommitted()) {
    throw new IllegalStateException(
                                    "Cannot forward request after response is committed");
  }
  response.reset();

  service((RequestImpl) request, (ResponseImpl) response);

  response.flushBuffer();
}
 

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
	HttpServletRequest httpRequest = (HttpServletRequest) request;
	if (safeips.contains(request.getRemoteAddr())) {
		chain.doFilter(request, response);
		return;
	}

	if (safeips.size() > 500) {
		safeips.clear();
	}

	if (iPBanListManagerIF == null)
		iPBanListManagerIF = (IPBanListManagerIF) WebAppUtil.getComponentInstance("iPBanListManager", servletContext);

	if (!httpRequest.getRequestURI().contains("registerCode")) {
		if (isSpam(httpRequest)) {
			log.debug("spammer, giving 'em a 503");
			safeips.remove(request.getRemoteAddr());
			disableSessionOnlines(httpRequest);
			if (!response.isCommitted())
				response.reset();
			HttpServletResponse httpResponse = (HttpServletResponse) response;
			httpResponse.sendError(503);
			return;
		}
	}

	safeips.add(request.getRemoteAddr());
	chain.doFilter(request, response);
	return;
}
 

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
	if (!isFilter) {
		chain.doFilter(request, response);
		return;
	}

	HttpServletRequest httpRequest = (HttpServletRequest) request;

	if (!httpRequest.getRequestURI().contains("registerCode"))
		if (!isPermittedRobot(httpRequest)) {
			String path = httpRequest.getServletPath();
			if (numPattern.matcher(path).matches()) {
				int slash = path.lastIndexOf("/");
				String id = path.substring(slash + 1, path.length());
				if (!checkSpamHit(id, httpRequest)) {
					log.warn("spammer,  fetching too frequency:" + httpRequest.getRequestURI() + " remote:" + httpRequest.getRemoteAddr());
					disableSessionOnlines(httpRequest);
					if (!response.isCommitted())
						response.reset();
					HttpServletResponse httpResponse = (HttpServletResponse) response;
					httpResponse.sendError(503);
					return;
				}
			}
		}
	chain.doFilter(request, response);
	return;
}
 

public void forward( ServletRequest request, ServletResponse response ) throws ServletException, IOException {
    response.reset();
    _servletMetaData.getServlet().service( DispatchedRequestWrapper.createForwardRequestWrapper( (HttpServletRequest) request, this ), response );
}