Java Code Examples for org.springframework.web.util.ContentCachingResponseWrapper#getStatusCode()

The following examples show how to use org.springframework.web.util.ContentCachingResponseWrapper#getStatusCode() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: ShallowEtagHeaderFilter.java    From spring-analysis-note with MIT License 6 votes vote down vote up 
private void updateResponse(HttpServletRequest request, HttpServletResponse response) throws IOException {
	ContentCachingResponseWrapper responseWrapper =
			WebUtils.getNativeResponse(response, ContentCachingResponseWrapper.class);
	Assert.notNull(responseWrapper, "ContentCachingResponseWrapper not found");
	HttpServletResponse rawResponse = (HttpServletResponse) responseWrapper.getResponse();
	int statusCode = responseWrapper.getStatusCode();

	if (rawResponse.isCommitted()) {
		responseWrapper.copyBodyToResponse();
	}
	else if (isEligibleForEtag(request, responseWrapper, statusCode, responseWrapper.getContentInputStream())) {
		String responseETag = generateETagHeaderValue(responseWrapper.getContentInputStream(), this.writeWeakETag);
		rawResponse.setHeader(HttpHeaders.ETAG, responseETag);
		String requestETag = request.getHeader(HttpHeaders.IF_NONE_MATCH);
		if (requestETag != null && ("*".equals(requestETag) || compareETagHeaderValue(requestETag, responseETag))) {
			rawResponse.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
		}
		else {
			responseWrapper.copyBodyToResponse();
		}
	}
	else {
		responseWrapper.copyBodyToResponse();
	}
}
Example 2
Source File: ShallowEtagHeaderFilter.java    From java-technology-stack with MIT License 6 votes vote down vote up 
private void updateResponse(HttpServletRequest request, HttpServletResponse response) throws IOException {
	ContentCachingResponseWrapper responseWrapper =
			WebUtils.getNativeResponse(response, ContentCachingResponseWrapper.class);
	Assert.notNull(responseWrapper, "ContentCachingResponseWrapper not found");
	HttpServletResponse rawResponse = (HttpServletResponse) responseWrapper.getResponse();
	int statusCode = responseWrapper.getStatusCode();

	if (rawResponse.isCommitted()) {
		responseWrapper.copyBodyToResponse();
	}
	else if (isEligibleForEtag(request, responseWrapper, statusCode, responseWrapper.getContentInputStream())) {
		String responseETag = generateETagHeaderValue(responseWrapper.getContentInputStream(), this.writeWeakETag);
		rawResponse.setHeader(HEADER_ETAG, responseETag);
		String requestETag = request.getHeader(HEADER_IF_NONE_MATCH);
		if (requestETag != null && ("*".equals(requestETag) || compareETagHeaderValue(requestETag, responseETag))) {
			rawResponse.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
		}
		else {
			responseWrapper.copyBodyToResponse();
		}
	}
	else {
		responseWrapper.copyBodyToResponse();
	}
}
Example 3
Source File: ShallowEtagHeaderFilter.java    From lams with GNU General Public License v2.0 5 votes vote down vote up 
private void updateResponse(HttpServletRequest request, HttpServletResponse response) throws IOException {
	ContentCachingResponseWrapper responseWrapper =
			WebUtils.getNativeResponse(response, ContentCachingResponseWrapper.class);
	Assert.notNull(responseWrapper, "ContentCachingResponseWrapper not found");
	HttpServletResponse rawResponse = (HttpServletResponse) responseWrapper.getResponse();
	int statusCode = responseWrapper.getStatusCode();

	if (rawResponse.isCommitted()) {
		responseWrapper.copyBodyToResponse();
	}
	else if (isEligibleForEtag(request, responseWrapper, statusCode, responseWrapper.getContentInputStream())) {
		String responseETag = generateETagHeaderValue(responseWrapper.getContentInputStream(), this.writeWeakETag);
		rawResponse.setHeader(HEADER_ETAG, responseETag);
		String requestETag = request.getHeader(HEADER_IF_NONE_MATCH);
		if (requestETag != null
				&& (responseETag.equals(requestETag)
				|| responseETag.replaceFirst("^W/", "").equals(requestETag.replaceFirst("^W/", ""))
				|| "*".equals(requestETag))) {
			if (logger.isTraceEnabled()) {
				logger.trace("ETag [" + responseETag + "] equal to If-None-Match, sending 304");
			}
			rawResponse.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
		}
		else {
			if (logger.isTraceEnabled()) {
				logger.trace("ETag [" + responseETag + "] not equal to If-None-Match [" + requestETag +
						"], sending normal response");
			}
			responseWrapper.copyBodyToResponse();
		}
	}
	else {
		if (logger.isTraceEnabled()) {
			logger.trace("Response with status code [" + statusCode + "] not eligible for ETag");
		}
		responseWrapper.copyBodyToResponse();
	}
}
Example 4
Source File: ShallowEtagHeaderFilter.java    From spring4-understanding with Apache License 2.0 5 votes vote down vote up 
private void updateResponse(HttpServletRequest request, HttpServletResponse response) throws IOException {
	ContentCachingResponseWrapper responseWrapper =
			WebUtils.getNativeResponse(response, ContentCachingResponseWrapper.class);
	Assert.notNull(responseWrapper, "ContentCachingResponseWrapper not found");
	HttpServletResponse rawResponse = (HttpServletResponse) responseWrapper.getResponse();
	int statusCode = responseWrapper.getStatusCode();

	if (rawResponse.isCommitted()) {
		responseWrapper.copyBodyToResponse();
	}
	else if (isEligibleForEtag(request, responseWrapper, statusCode, responseWrapper.getContentInputStream())) {
		String responseETag = generateETagHeaderValue(responseWrapper.getContentInputStream());
		rawResponse.setHeader(HEADER_ETAG, responseETag);
		String requestETag = request.getHeader(HEADER_IF_NONE_MATCH);
		if (responseETag.equals(requestETag)) {
			if (logger.isTraceEnabled()) {
				logger.trace("ETag [" + responseETag + "] equal to If-None-Match, sending 304");
			}
			rawResponse.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
		}
		else {
			if (logger.isTraceEnabled()) {
				logger.trace("ETag [" + responseETag + "] not equal to If-None-Match [" + requestETag +
						"], sending normal response");
			}
			responseWrapper.copyBodyToResponse();
		}
	}
	else {
		if (logger.isTraceEnabled()) {
			logger.trace("Response with status code [" + statusCode + "] not eligible for ETag");
		}
		responseWrapper.copyBodyToResponse();
	}
}