Example usage for javax.servlet.http HttpServletResponse getOutputStream

List of usage examples for javax.servlet.http HttpServletResponse getOutputStream

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Introduction

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

Prototype

public ServletOutputStream getOutputStream() throws IOException;

Source Link

Document

Returns a ServletOutputStream suitable for writing binary data in the response.

Usage

From source file:com.urservices.urerp.ecole.views.PdfReportView.java

@Override
protected void buildPdfDocument(Map<String, Object> model, Document document, PdfWriter pdfWriter,
        HttpServletRequest request, HttpServletResponse response) throws Exception {

    try {/*w  w  w  .  j  a v a 2 s  . c o  m*/

        PdfReader pdfTemplate = new PdfReader((InputStream) model.get("template"));
        PdfStamper stamper = new PdfStamper(pdfTemplate, response.getOutputStream());
        stamper.setFormFlattening(true);

        stamper.getAcroFields().setField("txtNom", "Kamdoum");
        stamper.getAcroFields().setField("txtPrenom", "Samuel");

        stamper.close();
        pdfTemplate.close();

        System.out.println("This PDF has " + pdfTemplate.getNumberOfPages() + " pages.");

    } catch (Exception e) {
        System.out.println("PdfReportView.buildPdfDocument() " + e.getMessage());
    }
}

From source file:com.dreamwork.web.FrontJsonController.java

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    response.setContentType("text/html; charset=UTF-8");
    ServletOutputStream out = response.getOutputStream();

    String message = "Not supported";

    out.write(message.getBytes("UTF-8"));
    out.flush();//ww  w .j a v a 2  s .  c om

}

From source file:org.apache.hadoop.gateway.hdfs.dispatch.WebHdfsHaHttpClientDispatchTest.java

@Test
public void testConnectivityFailover() throws Exception {
    String serviceName = "WEBHDFS";
    HaDescriptor descriptor = HaDescriptorFactory.createDescriptor();
    descriptor.addServiceConfig(//from  w w  w  .  j  a v  a  2s  .  co m
            HaDescriptorFactory.createServiceConfig(serviceName, "true", "1", "1000", "2", "1000"));
    HaProvider provider = new DefaultHaProvider(descriptor);
    URI uri1 = new URI("http://unreachable-host");
    URI uri2 = new URI("http://reachable-host");
    ArrayList<String> urlList = new ArrayList<String>();
    urlList.add(uri1.toString());
    urlList.add(uri2.toString());
    provider.addHaService(serviceName, urlList);
    FilterConfig filterConfig = EasyMock.createNiceMock(FilterConfig.class);
    ServletContext servletContext = EasyMock.createNiceMock(ServletContext.class);

    EasyMock.expect(filterConfig.getInitParameter(WebHdfsHaHttpClientDispatch.RESOURCE_ROLE_ATTRIBUTE))
            .andReturn(serviceName).anyTimes();
    EasyMock.expect(filterConfig.getServletContext()).andReturn(servletContext).anyTimes();
    EasyMock.expect(servletContext.getAttribute(HaServletContextListener.PROVIDER_ATTRIBUTE_NAME))
            .andReturn(provider).anyTimes();

    BasicHttpParams params = new BasicHttpParams();

    HttpUriRequest outboundRequest = EasyMock.createNiceMock(HttpRequestBase.class);
    EasyMock.expect(outboundRequest.getMethod()).andReturn("GET").anyTimes();
    EasyMock.expect(outboundRequest.getURI()).andReturn(uri1).anyTimes();
    EasyMock.expect(outboundRequest.getParams()).andReturn(params).anyTimes();

    HttpServletRequest inboundRequest = EasyMock.createNiceMock(HttpServletRequest.class);
    EasyMock.expect(inboundRequest.getRequestURL()).andReturn(new StringBuffer(uri2.toString())).once();
    EasyMock.expect(inboundRequest.getAttribute("dispatch.ha.failover.counter")).andReturn(new AtomicInteger(0))
            .once();
    EasyMock.expect(inboundRequest.getAttribute("dispatch.ha.failover.counter")).andReturn(new AtomicInteger(1))
            .once();

    HttpServletResponse outboundResponse = EasyMock.createNiceMock(HttpServletResponse.class);
    EasyMock.expect(outboundResponse.getOutputStream()).andAnswer(new IAnswer<ServletOutputStream>() {
        @Override
        public ServletOutputStream answer() throws Throwable {
            return new ServletOutputStream() {
                @Override
                public void write(int b) throws IOException {
                    throw new IOException("unreachable-host");
                }
            };
        }
    }).once();
    EasyMock.replay(filterConfig, servletContext, outboundRequest, inboundRequest, outboundResponse);
    Assert.assertEquals(uri1.toString(), provider.getActiveURL(serviceName));
    WebHdfsHaHttpClientDispatch dispatch = new WebHdfsHaHttpClientDispatch();
    dispatch.init(filterConfig);
    long startTime = System.currentTimeMillis();
    try {
        dispatch.executeRequest(outboundRequest, inboundRequest, outboundResponse);
    } catch (IOException e) {
        //this is expected after the failover limit is reached
    }
    long elapsedTime = System.currentTimeMillis() - startTime;
    Assert.assertEquals(uri2.toString(), provider.getActiveURL(serviceName));
    //test to make sure the sleep took place
    Assert.assertTrue(elapsedTime > 1000);
}

From source file:com.redoute.datamap.servlet.GenerateGraph.java

/**
 * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
 * methods.//from ww w.  j a v  a  2s .c  o  m
 *
 * @param request servlet request
 * @param response servlet response
 * @throws ServletException if a servlet-specific error occurs
 * @throws IOException if an I/O error occurs
 */
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    response.setContentType("image/png");
    ServletOutputStream os = response.getOutputStream();

    try {
        String stream = request.getParameter("stream");

        ApplicationContext appContext = WebApplicationContextUtils
                .getWebApplicationContext(this.getServletContext());
        IDatamapService datamapService = appContext.getBean(IDatamapService.class);

        BufferedImage graph = datamapService.dataImplementedByCriteria("stream", stream);

        ImageIO.write(graph, "png", os);
        os.close();

    } finally {
        os.close();
    }
}

From source file:com.tianjunwei.download.DownLoadController.java

@RequestMapping(value = { "/download" }, method = { RequestMethod.GET })
public void download(HttpServletResponse response) throws IOException {
    response.setContentType("application/octet-stream");
    response.addHeader("Content-Disposition", "attachment; filename=download.txt");
    OutputStream outputStream = response.getOutputStream();
    outputStream.write("sdsdfs".getBytes());
    outputStream.close();//  w  w w.  j a va 2 s. c o m
}

From source file:com.indeed.imhotep.web.QueryServlet.java

static void handleError(HttpServletResponse resp, boolean json, Throwable e, boolean status500,
        boolean isEventStream) throws IOException {
    if (!(e instanceof Exception || e instanceof OutOfMemoryError)) {
        throw Throwables.propagate(e);
    }// w w w . j a v a 2  s. co  m
    // output parse/execute error
    if (!json) {
        final ServletOutputStream outputStream = resp.getOutputStream();
        final PrintStream printStream = new PrintStream(outputStream);
        if (isEventStream) {
            resp.setContentType("text/event-stream");
            final String[] stackTrace = Throwables.getStackTraceAsString(e).split("\\n");
            printStream.println("event: servererror");
            for (String s : stackTrace) {
                printStream.println("data: " + s);
            }
            printStream.println();
        } else {
            resp.setStatus(500);
            e.printStackTrace(printStream);
            printStream.close();
        }
    } else {
        if (status500) {
            resp.setStatus(500);
        }
        // construct a parsed error object to be JSON serialized
        String clause = "";
        int offset = -1;
        if (e instanceof IQLParseException) {
            final IQLParseException IQLParseException = (IQLParseException) e;
            clause = IQLParseException.getClause();
            offset = IQLParseException.getOffsetInClause();
        }
        final String stackTrace = Throwables.getStackTraceAsString(Throwables.getRootCause(e));
        final ErrorResult error = new ErrorResult(e.getClass().getSimpleName(), e.getMessage(), stackTrace,
                clause, offset);
        resp.setContentType("application/json");
        final ObjectMapper jsonMapper = new ObjectMapper();
        final ServletOutputStream outputStream = resp.getOutputStream();
        jsonMapper.defaultPrettyPrintingWriter().writeValue(outputStream, error);
        outputStream.close();
    }
}

From source file:fi.okm.mpass.shibboleth.profile.impl.BuildMetaRestResponse.java

/** {@inheritDoc} */
@Override//from  w  w  w. j  a  v  a2s  . c  o  m
@Nonnull
public Event execute(@Nonnull final RequestContext springRequestContext) {
    ComponentSupport.ifNotInitializedThrowUninitializedComponentException(this);
    final HttpServletRequest httpRequest = getHttpServletRequest();
    pushHttpResponseProperties();
    final HttpServletResponse httpResponse = getHttpServletResponse();

    try {
        final Writer out = new OutputStreamWriter(httpResponse.getOutputStream(), "UTF-8");

        if (!HttpMethod.GET.toString().equals(httpRequest.getMethod())) {
            log.warn("{}: Unsupported method attempted {}", getLogPrefix(), httpRequest.getMethod());
            out.append(makeErrorResponse(HttpStatus.SC_METHOD_NOT_ALLOWED,
                    httpRequest.getMethod() + " not allowed", "Only GET is allowed"));
        } else if (metaDTO != null) {
            final Gson gson = new Gson();
            out.append(gson.toJson(getMetaDTO()));
            httpResponse.setStatus(HttpStatus.SC_OK);
        } else {
            out.append(
                    makeErrorResponse(HttpStatus.SC_NOT_IMPLEMENTED, "Not implemented on the server side", ""));
        }
        out.flush();
    } catch (IOException e) {
        log.error("{}: Could not encode the JSON response", getLogPrefix(), e);
        httpResponse.setStatus(HttpStatus.SC_SERVICE_UNAVAILABLE);
        return ActionSupport.buildEvent(this, EventIds.IO_ERROR);
    }
    return ActionSupport.buildProceedEvent(this);
}

From source file:org.apache.hadoop.gateway.hdfs.dispatch.WebHdfsHaDispatchTest.java

@Test
public void testConnectivityFailover() throws Exception {
    String serviceName = "WEBHDFS";
    HaDescriptor descriptor = HaDescriptorFactory.createDescriptor();
    descriptor.addServiceConfig(/*from w ww.j  av a2 s .c om*/
            HaDescriptorFactory.createServiceConfig(serviceName, "true", "1", "1000", "2", "1000", null, null));
    HaProvider provider = new DefaultHaProvider(descriptor);
    URI uri1 = new URI("http://unreachable-host");
    URI uri2 = new URI("http://reachable-host");
    ArrayList<String> urlList = new ArrayList<String>();
    urlList.add(uri1.toString());
    urlList.add(uri2.toString());
    provider.addHaService(serviceName, urlList);
    FilterConfig filterConfig = EasyMock.createNiceMock(FilterConfig.class);
    ServletContext servletContext = EasyMock.createNiceMock(ServletContext.class);

    EasyMock.expect(filterConfig.getServletContext()).andReturn(servletContext).anyTimes();
    EasyMock.expect(servletContext.getAttribute(HaServletContextListener.PROVIDER_ATTRIBUTE_NAME))
            .andReturn(provider).anyTimes();

    BasicHttpParams params = new BasicHttpParams();

    HttpUriRequest outboundRequest = EasyMock.createNiceMock(HttpRequestBase.class);
    EasyMock.expect(outboundRequest.getMethod()).andReturn("GET").anyTimes();
    EasyMock.expect(outboundRequest.getURI()).andReturn(uri1).anyTimes();
    EasyMock.expect(outboundRequest.getParams()).andReturn(params).anyTimes();

    HttpServletRequest inboundRequest = EasyMock.createNiceMock(HttpServletRequest.class);
    EasyMock.expect(inboundRequest.getRequestURL()).andReturn(new StringBuffer(uri2.toString())).once();
    EasyMock.expect(inboundRequest.getAttribute("dispatch.ha.failover.counter")).andReturn(new AtomicInteger(0))
            .once();
    EasyMock.expect(inboundRequest.getAttribute("dispatch.ha.failover.counter")).andReturn(new AtomicInteger(1))
            .once();

    HttpServletResponse outboundResponse = EasyMock.createNiceMock(HttpServletResponse.class);
    EasyMock.expect(outboundResponse.getOutputStream())
            .andAnswer(new IAnswer<SynchronousServletOutputStreamAdapter>() {
                @Override
                public SynchronousServletOutputStreamAdapter answer() throws Throwable {
                    return new SynchronousServletOutputStreamAdapter() {
                        @Override
                        public void write(int b) throws IOException {
                            throw new IOException("unreachable-host");
                        }
                    };
                }
            }).once();
    EasyMock.replay(filterConfig, servletContext, outboundRequest, inboundRequest, outboundResponse);
    Assert.assertEquals(uri1.toString(), provider.getActiveURL(serviceName));
    WebHdfsHaDispatch dispatch = new WebHdfsHaDispatch();
    dispatch.setHttpClient(new DefaultHttpClient());
    dispatch.setHaProvider(provider);
    dispatch.init();
    long startTime = System.currentTimeMillis();
    try {
        dispatch.executeRequest(outboundRequest, inboundRequest, outboundResponse);
    } catch (IOException e) {
        //this is expected after the failover limit is reached
    }
    long elapsedTime = System.currentTimeMillis() - startTime;
    Assert.assertEquals(uri2.toString(), provider.getActiveURL(serviceName));
    //test to make sure the sleep took place
    Assert.assertTrue(elapsedTime > 1000);
}

From source file:jetbrick.template.web.springmvc.JetTemplateView.java

@Override
protected void renderMergedTemplateModel(Map<String, Object> model, HttpServletRequest request,
        HttpServletResponse response) throws Exception {
    JetWebContext context = new JetWebContext(request, response, model);
    JetTemplate template = JetWebEngine.getEngine().getTemplate(getUrl());
    template.render(context, response.getOutputStream());
}

From source file:uk.org.iay.mdq.server.CertificateController.java

/**
 * Returns the certificate being used for signing responses.
 * /*from  w ww  .jav a 2 s . com*/
 * @param response {@link HttpServletResponse} in which to build the response
 * 
 * @throws Exception if anything goes wrong
 */
@RequestMapping("")
void getCertificate(@Nonnull final HttpServletResponse response) throws Exception {
    log.debug("queried for certificate");
    final InputStream in = certificateResource.getInputStream();
    final OutputStream out = response.getOutputStream();
    response.setContentType("text/plain");
    ByteStreams.copy(in, out);
}