Example usage for org.springframework.http.server ServletServerHttpResponse ServletServerHttpResponse

Introduction

In this page you can find the example usage for org.springframework.http.server ServletServerHttpResponse ServletServerHttpResponse.

Prototype

public ServletServerHttpResponse(HttpServletResponse servletResponse)

Source Link

Document

Construct a new instance of the ServletServerHttpResponse based on the given HttpServletResponse .

Usage

From source file:org.springframework.web.servlet.resource.ResourceHttpRequestHandler.java

/**
 * Processes a resource request.// ww  w.j  a  v a 2 s  .co  m
 * <p>Checks for the existence of the requested resource in the configured list of locations.
 * If the resource does not exist, a {@code 404} response will be returned to the client.
 * If the resource exists, the request will be checked for the presence of the
 * {@code Last-Modified} header, and its value will be compared against the last-modified
 * timestamp of the given resource, returning a {@code 304} status code if the
 * {@code Last-Modified} value  is greater. If the resource is newer than the
 * {@code Last-Modified} value, or the header is not present, the content resource
 * of the resource will be written to the response with caching headers
 * set to expire one year in the future.
 */
@Override
public void handleRequest(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    // For very general mappings (e.g. "/") we need to check 404 first
    Resource resource = getResource(request);
    if (resource == null) {
        logger.trace("No matching resource found - returning 404");
        response.sendError(HttpServletResponse.SC_NOT_FOUND);
        return;
    }

    if (HttpMethod.OPTIONS.matches(request.getMethod())) {
        response.setHeader("Allow", getAllowHeader());
        return;
    }

    // Supported methods and required session
    checkRequest(request);

    // Header phase
    if (new ServletWebRequest(request, response).checkNotModified(resource.lastModified())) {
        logger.trace("Resource not modified - returning 304");
        return;
    }

    // Apply cache settings, if any
    prepareResponse(response);

    // Check the media type for the resource
    MediaType mediaType = getMediaType(request, resource);
    if (mediaType != null) {
        if (logger.isTraceEnabled()) {
            logger.trace("Determined media type '" + mediaType + "' for " + resource);
        }
    } else {
        if (logger.isTraceEnabled()) {
            logger.trace("No media type found for " + resource + " - not sending a content-type header");
        }
    }

    // Content phase
    if (METHOD_HEAD.equals(request.getMethod())) {
        setHeaders(response, resource, mediaType);
        logger.trace("HEAD request - skipping content");
        return;
    }

    ServletServerHttpResponse outputMessage = new ServletServerHttpResponse(response);
    if (request.getHeader(HttpHeaders.RANGE) == null) {
        Assert.state(this.resourceHttpMessageConverter != null, "Not initialized");
        setHeaders(response, resource, mediaType);
        this.resourceHttpMessageConverter.write(resource, mediaType, outputMessage);
    } else {
        Assert.state(this.resourceRegionHttpMessageConverter != null, "Not initialized");
        response.setHeader(HttpHeaders.ACCEPT_RANGES, "bytes");
        ServletServerHttpRequest inputMessage = new ServletServerHttpRequest(request);
        try {
            List<HttpRange> httpRanges = inputMessage.getHeaders().getRange();
            response.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT);
            this.resourceRegionHttpMessageConverter.write(HttpRange.toResourceRegions(httpRanges, resource),
                    mediaType, outputMessage);
        } catch (IllegalArgumentException ex) {
            response.setHeader("Content-Range", "bytes */" + resource.contentLength());
            response.sendError(HttpServletResponse.SC_REQUESTED_RANGE_NOT_SATISFIABLE);
        }
    }
}

From source file:org.springframework.web.socket.server.support.WebSocketHttpRequestHandler.java

@Override
public void handleRequest(HttpServletRequest servletRequest, HttpServletResponse servletResponse)
        throws ServletException, IOException {

    ServerHttpRequest request = new ServletServerHttpRequest(servletRequest);
    ServerHttpResponse response = new ServletServerHttpResponse(servletResponse);

    HandshakeInterceptorChain chain = new HandshakeInterceptorChain(this.interceptors, this.wsHandler);
    HandshakeFailureException failure = null;

    try {//from   w  w  w  . j  a  v a2 s. co  m
        if (logger.isDebugEnabled()) {
            logger.debug(servletRequest.getMethod() + " " + servletRequest.getRequestURI());
        }
        Map<String, Object> attributes = new HashMap<>();
        if (!chain.applyBeforeHandshake(request, response, attributes)) {
            return;
        }
        this.handshakeHandler.doHandshake(request, response, this.wsHandler, attributes);
        chain.applyAfterHandshake(request, response, null);
        response.close();
    } catch (HandshakeFailureException ex) {
        failure = ex;
    } catch (Throwable ex) {
        failure = new HandshakeFailureException("Uncaught failure for request " + request.getURI(), ex);
    } finally {
        if (failure != null) {
            chain.applyAfterHandshake(request, response, failure);
            throw failure;
        }
    }
}