Example usage for javax.servlet.http HttpServletResponse isCommitted

Introduction

In this page you can find the example usage for javax.servlet.http HttpServletResponse isCommitted.

Prototype

public boolean isCommitted();

Source Link

Document

Returns a boolean indicating if the response has been committed.

Usage

From source file:ch.entwine.weblounge.common.impl.request.Http11ProtocolHandler.java

/**
 * Method generateResponse.//from ww  w  . jav  a 2  s.c  o m
 * 
 * @param resp
 * @param type
 * @param is
 * @return boolean
 * @throws IOException
 *           if generating the response fails
 */
public static boolean generateResponse(HttpServletResponse resp, Http11ResponseType type, InputStream is)
        throws IOException {

    /* first generate the response headers */
    generateHeaders(resp, type);

    /* adjust the statistics */
    ++stats[STATS_BODY_GENERATED];
    incResponseStats(type.type, bodyStats);

    /* generate the response body */
    try {
        if (resp.isCommitted())
            log.warn("Response is already committed!");
        switch (type.type) {
        case RESPONSE_OK:
            if (!type.isHeaderOnly() && is != null) {
                resp.setBufferSize(BUFFER_SIZE);
                OutputStream os = null;
                try {
                    os = resp.getOutputStream();
                    IOUtils.copy(is, os);
                } catch (IOException e) {
                    if (RequestUtils.isCausedByClient(e))
                        return true;
                } finally {
                    IOUtils.closeQuietly(os);
                }
            }
            break;

        case RESPONSE_PARTIAL_CONTENT:
            if (type.from < 0 || type.to < 0 || type.from > type.to || type.to > type.size) {
                resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
                        "Invalid partial content parameters");
                log.warn("Invalid partial content parameters");
            } else if (!type.isHeaderOnly() && is != null) {
                resp.setBufferSize(BUFFER_SIZE);
                OutputStream os = resp.getOutputStream();
                if (is.skip(type.from) != type.from) {
                    resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
                            "Premature end of input stream");
                    log.warn("Premature end of input stream");
                    break;
                }
                try {

                    /* get the temporary buffer for this thread */
                    byte[] tmp = buffer.get();
                    if (tmp == null) {
                        tmp = new byte[BUFFER_SIZE];
                        buffer.set(tmp);
                    }

                    int read = type.to - type.from;
                    int copy = read;
                    int write = 0;

                    read = is.read(tmp);
                    while (copy > 0 && read >= 0) {
                        copy -= read;
                        write = copy > 0 ? read : read + copy;
                        os.write(tmp, 0, write);
                        stats[STATS_BYTES_WRITTEN] += write;
                        read = is.read(tmp);
                    }
                    if (copy > 0) {
                        resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
                                "Premature end of input stream");
                        log.warn("Premature end of input stream");
                        break;
                    }
                    os.flush();
                    os.close();
                } catch (SocketException e) {
                    log.debug("Request cancelled by client");
                }
            }
            break;

        case RESPONSE_NOT_MODIFIED:
            /* NOTE: we MUST NOT return any content (RFC 2616)!!! */
            break;

        case RESPONSE_PRECONDITION_FAILED:
            if (type.err == null)
                resp.sendError(HttpServletResponse.SC_PRECONDITION_FAILED);
            else
                resp.sendError(HttpServletResponse.SC_PRECONDITION_FAILED, type.err);
            break;

        case RESPONSE_REQUESTED_RANGE_NOT_SATISFIABLE:
            if (type.err == null)
                resp.sendError(HttpServletResponse.SC_REQUESTED_RANGE_NOT_SATISFIABLE);
            else
                resp.sendError(HttpServletResponse.SC_REQUESTED_RANGE_NOT_SATISFIABLE, type.err);
            break;

        case RESPONSE_METHOD_NOT_ALLOWED:
            if (type.err == null)
                resp.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
            else
                resp.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED, type.err);
            break;

        case RESPONSE_INTERNAL_SERVER_ERROR:
        default:
            if (type.err == null)
                resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
            else
                resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, type.err);
        }
    } catch (IOException e) {
        if (e instanceof EOFException) {
            log.debug("Request canceled by client");
            return true;
        }
        ++stats[STATS_ERRORS];
        String message = e.getCause() != null ? e.getCause().getMessage() : e.getMessage();
        Throwable cause = e.getCause() != null ? e.getCause() : e;
        log.warn("I/O exception while sending response: {}", message, cause);
        throw e;
    }

    return true;
}

---

From source file:org.opentravel.pubs.servlet.DispatcherServlet.java

/**
 * @see org.springframework.web.servlet.DispatcherServlet#render(org.springframework.web.servlet.ModelAndView, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
 *//*from w ww  . j a  v  a  2s.c o  m*/
@Override
protected void render(ModelAndView mv, HttpServletRequest request, HttpServletResponse response)
        throws Exception {
    if (!response.isCommitted()) {
        super.render(mv, request, response);
    }
}

---

From source file:com.nec.harvest.servlet.interceptor.async.TimeoutCallableProcessingInterceptor.java

@Override
public <T> Object handleTimeout(NativeWebRequest request, Callable<T> task) throws Exception {
    final HttpServletResponse servletResponse = request.getNativeResponse(HttpServletResponse.class);
    if (!servletResponse.isCommitted()) {
        servletResponse.sendError(HttpStatus.SERVICE_UNAVAILABLE.value());
    }//from   ww  w  .  java 2 s  .  com

    return CallableProcessingInterceptor.RESPONSE_HANDLED;
}

---

From source file:de.itsvs.cwtrpc.security.DefaultRpcLogoutFailureHandler.java

public void onLogoutFailure(HttpServletRequest request, HttpServletResponse response, Throwable exception)
        throws IOException, ServletException {
    if (response.isCommitted()) {
        log.debug("Response has already been sent to client");
        return;//w  w w  . ja  v  a  2s  .com
    }

    writeUnexpectedException(request, response, exception);
}

---

From source file:org.esigate.servlet.impl.ResponseSender.java

public void sendResponse(HttpResponse httpResponse, IncomingRequest httpRequest, HttpServletResponse response)
        throws IOException {
    if (response.isCommitted()) {
        return; // Response already sent
    }//from w  w  w.  jav  a2 s .co  m
    sendHeaders(httpResponse, httpRequest, response);
    HttpEntity httpEntity = httpResponse.getEntity();
    if (httpEntity != null) {
        HttpResponseUtils.writeTo(httpEntity, response.getOutputStream());
    } else {
        response.sendError(httpResponse.getStatusLine().getStatusCode(),
                httpResponse.getStatusLine().getReasonPhrase());
    }
}

---

From source file:de.itsvs.cwtrpc.security.DefaultRpcLogoutSuccessHandler.java

public void onLogoutSuccess(HttpServletRequest request, HttpServletResponse response,
        Authentication authentication) throws IOException, ServletException {
    if (response.isCommitted()) {
        log.debug("Response has already been sent to client");
        return;//from   ww  w. j a  v  a2  s  .  c  om
    }

    sendResponse(request, response, authentication);
}

---

From source file:de.itsvs.cwtrpc.security.DefaultRpcAuthenticationSuccessHandler.java

public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response,
        Authentication authentication) throws IOException, ServletException {
    if (response.isCommitted()) {
        log.debug("Response has already been sent to client");
        return;// w ww.  ja v a  2 s  .  c  o m
    }

    sendResponse(request, response, authentication);
}

---

From source file:info.magnolia.cms.security.auth.callback.FormClientCallback.java

@Override
public void handle(HttpServletRequest request, HttpServletResponse response) {
    try {/*from www .  java2s.  c o m*/
        if (!response.isCommitted()) {
            response.setContentType("text/html");
            if (null == request.getCharacterEncoding()) {
                response.setCharacterEncoding(MIMEMapping.getContentEncodingOrDefault("text/html"));
            }
        }
        FreemarkerUtil.process(getLoginForm(), getMessages(), response.getWriter());
    } catch (Throwable t) {
        log.error("exception while writing login template", t);
    }
}

---

From source file:org.entando.entando.aps.system.services.controller.executor.PageExecutorService.java

@Override
public void service(RequestContext reqCtx) {
    HttpServletRequest request = reqCtx.getRequest();
    HttpServletResponse response = reqCtx.getResponse();
    try {//w  w w. jav  a 2s  .co  m
        if (response.isCommitted()) {
            return;
        }
        IPage page = (IPage) reqCtx.getExtraParam(SystemConstants.EXTRAPAR_CURRENT_PAGE);
        PageModel model = page.getModel();
        if (StringUtils.isBlank(model.getTemplate())) {
            String jspPath = model.getPageModelJspPath();
            RequestDispatcher dispatcher = request.getSession().getServletContext()
                    .getRequestDispatcher(jspPath);
            dispatcher.forward(request, response);
        } else {
            ExecutorBeanContainer ebc = (ExecutorBeanContainer) reqCtx
                    .getExtraParam(SystemConstants.EXTRAPAR_EXECUTOR_BEAN_CONTAINER);
            Template template = new Template(page.getCode(), new StringReader(model.getTemplate()),
                    ebc.getConfiguration());
            try {
                template.process(ebc.getTemplateModel(), response.getWriter());
            } catch (Throwable t) {
                String msg = "Error detected while including a page model " + model.getCode();
                _logger.error(msg, t);
                throw new RuntimeException(msg, t);
            }
        }
    } catch (ServletException e) {
        String msg = "Error detected while including a page model";
        _logger.error(msg, e);
        throw new RuntimeException(msg, e);
    } catch (IOException e) {
        String msg = "IO error detected while including the page model";
        _logger.error(msg, e);
        throw new RuntimeException(msg, e);
    }
}

---

From source file:com.haulmont.cuba.web.controllers.FileDownloadController.java

protected void error(HttpServletResponse response) throws IOException {
    if (!response.isCommitted())
        response.sendError(HttpServletResponse.SC_NOT_FOUND);
}

---

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