javax.servlet.ServletOutputStream#write

Source File: LaunchClassicBatchSampleServlet.java From appstatus with Apache License 2.0

6 votes

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
		throws ServletException, IOException {

	// launch the batch
	ExecutorService executorService = Executors.newCachedThreadPool();
	executorService.execute(new BatchSample());

	ServletOutputStream os = resp.getOutputStream();

	os.write("<html><head".getBytes(ENCODING));
	os.write("<body>".getBytes(ENCODING));
	os.write("<h1>Batch started</h1><p>The demo batch has been sucessfully started </p>"
			.getBytes(ENCODING));
	os.write("</body></html>".getBytes(ENCODING));
}

Source File: CommonController.java From spring-boot-projects with Apache License 2.0

6 votes

@GetMapping("/common/kaptcha")
public void defaultKaptcha(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
    byte[] captchaOutputStream = null;
    ByteArrayOutputStream imgOutputStream = new ByteArrayOutputStream();
    try {
        //生产验证码字符串并保存到session中
        String verifyCode = captchaProducer.createText();
        httpServletRequest.getSession().setAttribute("verifyCode", verifyCode);
        BufferedImage challenge = captchaProducer.createImage(verifyCode);
        ImageIO.write(challenge, "jpg", imgOutputStream);
    } catch (IllegalArgumentException e) {
        httpServletResponse.sendError(HttpServletResponse.SC_NOT_FOUND);
        return;
    }
    captchaOutputStream = imgOutputStream.toByteArray();
    httpServletResponse.setHeader("Cache-Control", "no-store");
    httpServletResponse.setHeader("Pragma", "no-cache");
    httpServletResponse.setDateHeader("Expires", 0);
    httpServletResponse.setContentType("image/jpeg");
    ServletOutputStream responseOutputStream = httpServletResponse.getOutputStream();
    responseOutputStream.write(captchaOutputStream);
    responseOutputStream.flush();
    responseOutputStream.close();
}

Source File: Tools.java From torrenttunes-client with GNU General Public License v3.0

6 votes

public static HttpServletResponse writeFileToResponse2(String path, Response res) {

		byte[] encoded;
		try {
			encoded = java.nio.file.Files.readAllBytes(Paths.get(path));


			ServletOutputStream os = res.raw().getOutputStream();
			os.write(encoded);
			os.close();

			return res.raw();

		} catch (IOException e) {
			throw new NoSuchElementException("Couldn't write response from path: " + path);
		}
	}

Source File: NetworkExplorer.java From jcifs with GNU Lesser General Public License v2.1

6 votes

protected void doFile ( HttpServletRequest req, HttpServletResponse resp, SmbFile file ) throws IOException {
    byte[] buf = new byte[8192];

    @SuppressWarnings ( "resource" )
    ServletOutputStream out = resp.getOutputStream();
    String url;
    int n;
    try ( SmbFileInputStream in = new SmbFileInputStream(file) ) {
        url = file.getLocator().getPath();
        resp.setContentType("text/plain");
        resp.setContentType(URLConnection.guessContentTypeFromName(url));
        resp.setHeader("Content-Length", file.length() + "");
        resp.setHeader("Accept-Ranges", "Bytes");

        while ( ( n = in.read(buf) ) != -1 ) {
            out.write(buf, 0, n);
        }
    }
}

Source File: ApplicationAdminClient.java From carbon-commons with Apache License 2.0

6 votes

public void downloadCappArchive(String filename, HttpServletResponse response)
        throws IOException, ApplicationAdminExceptionException {

    ServletOutputStream out = response.getOutputStream();
    DataHandler dataHandler = stub.downloadCappArchive(filename);
    if (dataHandler != null) {
        if (!filename.endsWith(".car")) {
            filename += ".car";
        }
        response.setHeader("Content-Disposition", "fileName=" + filename);
        response.setContentType(dataHandler.getContentType());
        InputStream in = dataHandler.getDataSource().getInputStream();
        int nextChar;
        while ((nextChar = in.read()) != -1) {
            out.write((char) nextChar);
        }
        out.flush();
        in.close();
        out.close();
    } else {
        out.write("The requested capp archive was not found on the server".getBytes());
    }
}

Source File: ControllerUtils.java From efo with MIT License

6 votes

/**
 * 加载本地资源
 *
 * @param response 返回的Response
 * @param path 资源路径
 * @param download 直接下载
 */
public static void loadResource(HttpServletResponse response, String path, boolean download) throws IOException {
    if (Checker.isNotEmpty(path)) {
        File file = new File(path);
        if (download) {
            setResponseFileName(response, file.getName());
        }
        FileInputStream in = new FileInputStream(file);
        ServletOutputStream os = response.getOutputStream();
        byte[] b;
        while (in.available() > 0) {
            b = in.available() > 1024 ? new byte[1024] : new byte[in.available()];
            in.read(b, 0, b.length);
            os.write(b, 0, b.length);
        }
        in.close();
        os.flush();
        os.close();
    } else {
        response.sendRedirect(DefaultValues.NOT_FOUND_PAGE);
    }
}

Source File: HttpUrlConnectionTestServlet.java From apm-agent-java with Apache License 2.0

6 votes

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
    final URL url = new URL("http",  req.getLocalAddr(), req.getLocalPort(),req.getServletContext().getContextPath() + "/hello-world.jsp");
    final HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
    urlConnection.connect();
    final InputStream inputStream = urlConnection.getInputStream();
    resp.setStatus(urlConnection.getResponseCode());
    resp.setContentType(urlConnection.getHeaderField("Content-Type"));
    final byte[] buffer = new byte[1024];
    final ServletOutputStream outputStream = resp.getOutputStream();
    for (int limit = inputStream.read(buffer); limit != -1; limit = inputStream.read(buffer)) {
        outputStream.write(buffer, 0, limit);
    }
    inputStream.close();
    urlConnection.disconnect();
    outputStream.close();
}

Source File: ProtectedResourceProvider.java From entando-components with GNU Lesser General Public License v3.0

6 votes

protected void createResponse(HttpServletResponse resp, ResourceInterface resource,
        ResourceInstance instance) throws IOException, ServletException {
    resp.setContentType(instance.getMimeType());
    resp.setHeader("Content-Disposition", "inline; filename=" + instance.getFileName());
    ServletOutputStream out = resp.getOutputStream();
    try {
        InputStream is = resource.getResourceStream(instance);
        if (null != is) {
            byte[] buffer = new byte[2048];
            int length = -1;
            // Transfer the data
            while ((length = is.read(buffer)) != -1) {
                out.write(buffer, 0, length);
                out.flush();
            }
            is.close();
        }
    } catch (Throwable t) {
        logger.error("Error extracting protected resource", t);
        throw new ServletException("Error extracting protected resource", t);
    } finally {
        out.close();
    }
}

Source File: HttpProxyServlet.java From openfire-ofmeet-plugin with Apache License 2.0

5 votes

private void writeGet(String urlString, ServletOutputStream out)
{
    byte[] buffer = new byte[4096];

    try{
        URL url = new URL(urlString);
        URLConnection urlConn = url.openConnection();
        InputStream inStream = urlConn.getInputStream();
        int n = -1;

        while ( (n = inStream.read(buffer)) != -1)
        {
            out.write(buffer, 0, n);
        }

        out.close();

    } catch(MalformedURLException e){
        Log.info("HttpProxy writeGet MalformedURLException", e);

    } catch(IOException  e1){
        Log.info("HttpProxy writeGet IOException", e1);

    } catch (Exception e2) {
        Log.info("HttpProxy - writeGet Exception", e2);
    }
}

Source File: TestHttpClient.java From localization_nifi with Apache License 2.0

5 votes

private static void respondWithText(HttpServletResponse resp, String result, int statusCode) throws IOException {
    resp.setContentType("text/plain");
    resp.setStatus(statusCode);
    final ServletOutputStream out = resp.getOutputStream();
    out.write(result.getBytes());
    out.flush();
}

Source File: FileAction.java From albert with MIT License

5 votes

@RequestMapping(value = "/downloadFile")
public void downloadFile(@RequestParam("id")Integer id,HttpServletResponse response,HttpServletResponse request,
           ModelMap model){
	try {
	FileDTO f = fileService.getFileDetail(id);
	 //获取网站部署路径(通过ServletContext对象)，用于确定下载文件位置，从而实现下载  
       String path = servletContext.getRealPath("/");  
 
       //1.设置文件ContentType类型，这样设置，会自动判断下载文件类型  
       response.setContentType("multipart/form-data");  
       //2.设置文件头：最后一个参数是设置下载文件名(假如我们叫a.pdf)  
       response.setHeader("Content-Disposition", "attachment;fileName=download."+f.getFileFormat());  
       ServletOutputStream out;  
       //通过文件路径获得File对象(假如此路径中有一个download.pdf文件)  
       File file = new File(path +"uploadfile/"+ f.getUrl());  
 
         
           FileInputStream inputStream = new FileInputStream(file);  
 
           //3.通过response获取ServletOutputStream对象(out)  
           out = response.getOutputStream();  
 
           int b = 0;  
           //创建缓冲区
           byte buffer[] = new byte[1024];
            int len = 0;
            //循环将输入流中的内容读取到缓冲区当中
            while((len=inputStream.read(buffer))>0){
            //输出缓冲区的内容到浏览器，实现文件下载
            out.write(buffer, 0, len);
            }
           inputStream.close();  
           out.close();  
           out.flush();  
 
       } catch (IOException e) {  
           e.printStackTrace();  
       } 
	
}

Source File: FlowableDecisionTableService.java From flowable-engine with Apache License 2.0

5 votes

protected void exportDefinition(HttpServletResponse response, AbstractModel definitionModel, Map<String, String> decisionTablesEditorJson) {
    try {

        JsonNode editorJsonNode = objectMapper.readTree(definitionModel.getModelEditorJson());

        // URLEncoder.encode will replace spaces with '+', to keep the actual name replacing '+' to '%20'
        String fileName = URLEncoder.encode(definitionModel.getName(), "UTF-8").replaceAll("\\+", "%20") + ".dmn";
        response.setHeader("Content-Disposition", "attachment; filename*=UTF-8''" + fileName);

        ServletOutputStream servletOutputStream = response.getOutputStream();
        response.setContentType("application/xml");

        DmnDefinition dmnDefinition = dmnJsonConverter.convertToDmn(editorJsonNode, definitionModel.getId(), decisionTablesEditorJson);
        byte[] xmlBytes = dmnXmlConverter.convertToXML(dmnDefinition);

        BufferedInputStream in = new BufferedInputStream(new ByteArrayInputStream(xmlBytes));

        byte[] buffer = new byte[8096];
        while (true) {
            int count = in.read(buffer);
            if (count == -1)
                break;
            servletOutputStream.write(buffer, 0, count);
        }

        // Flush and close stream
        servletOutputStream.flush();
        servletOutputStream.close();

    } catch (Exception e) {
        LOGGER.error("Could not export decision table model", e);
        throw new InternalServerErrorException("Could not export decision table model");
    }
}

Source File: LoggersPage.java From appstatus with Apache License 2.0

5 votes

@Override
public void doGet(StatusWebHandler webHandler, HttpServletRequest req, HttpServletResponse resp)
		throws UnsupportedEncodingException, IOException {
	LOGGER.debug("doGet");
	if (isNotBlank(req.getParameter("name")) && isNotBlank(req.getParameter("level"))) {
		LoggerConfig logger2Change = new LoggerConfig(req.getParameter("name"), req.getParameter("level"));
		LOGGER.debug("Change log level : {} - {}", logger2Change.getName(), logger2Change.getLevel());
		webHandler.getAppStatus().getLoggersManager().update(logger2Change);
	}
	setup(resp, "text/html");
	ServletOutputStream os = resp.getOutputStream();
	Map<String, String> valuesMap = new HashMap<String, String>();
	// build sbLoggersTable
	StrBuilder sbLoggersTable = new StrBuilder();
	List<LoggerConfig> loggers = webHandler.getAppStatus().getLoggersManager().getLoggers();
	if (generateBeginTable(sbLoggersTable, loggers.size())) {
		generateHeaders(sbLoggersTable, "", "Name", "Levels", "", "", "", "");
		for (LoggerConfig logger : loggers) {
			generateRow(sbLoggersTable, Resources.STATUS_PROP, logger.getName(), getButton(LEVEL_TRACE, logger),
					getButton(ILoggersManager.LEVEL_DEBUG, logger), getButton(LEVEL_INFO, logger),
					getButton(LEVEL_WARN, logger), getButton(LEVEL_ERROR, logger));
		}
		generateEndTable(sbLoggersTable, loggers.size());
	}
	// generating content
	valuesMap.put("loggersTable", sbLoggersTable.toString());
	valuesMap.put("loggerCount", String.valueOf(loggers.size()));
	String content = applyLayout(valuesMap, PAGECONTENTLAYOUT);
	valuesMap.clear();
	valuesMap.put("content", content);
	// generating page
	os.write(getPage(webHandler, valuesMap).getBytes(ENCODING));
}

Source File: WorkFlowController.java From maven-framework-project with MIT License

5 votes

/**
 * 根据流程实例Id和资源类型加载流程资源
 * @param processInstanceId 流程实例id
 * @param resourceType 流程资源类型
 * @param request
 * @param response
 */
@RequestMapping(value="/loadResourceByProcessInstance",method={RequestMethod.GET,RequestMethod.POST})
public void loadResourceByProcessInstance(@RequestParam("processInstanceId")String processInstanceId,@RequestParam("resourceType")String resourceType,HttpServletRequest request, HttpServletResponse response){
	//根据流程实例id查询流程实例
	ProcessInstance processInstance = runtimeService.createProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();
	//根据流程定义id查询流程定义
	ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery().processDefinitionId(processInstance.getProcessDefinitionId()).singleResult();
	
	String resourceName="";
	if(resourceType.equals("xml")){
		//获取流程定义资源名称
		resourceName=processDefinition.getResourceName();
	}else if(resourceType.equals("image")){
		//获取流程图资源名称
		resourceName=processDefinition.getDiagramResourceName();
	}
	//打开流程资源流
	InputStream resourceAsStream = repositoryService.getResourceAsStream(processDefinition.getDeploymentId(), resourceName);
	//输出到浏览器
	try {
		byte[] byteArray = IOUtils.toByteArray(resourceAsStream);
		ServletOutputStream servletOutputStream = response.getOutputStream();
		servletOutputStream.write(byteArray, 0, byteArray.length);
		servletOutputStream.flush();
		servletOutputStream.close();
	} catch (IOException e) {
		e.printStackTrace();
	}
}

Source File: ServletWebSocketHttpExchange.java From lams with GNU General Public License v2.0

5 votes

@Override
public IoFuture<Void> sendData(final ByteBuffer data) {
    try {
        final ServletOutputStream outputStream = response.getOutputStream();
        while (data.hasRemaining()) {
            outputStream.write(data.get());
        }
        return new FinishedIoFuture<>(null);
    } catch (IOException e) {
        final FutureResult<Void> ioFuture = new FutureResult<>();
        ioFuture.setException(e);
        return ioFuture.getIoFuture();
    }
}

Source File: CommonController.java From newbee-mall with GNU General Public License v3.0

5 votes

@GetMapping("/common/mall/kaptcha")
public void mallKaptcha(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
    com.google.code.kaptcha.impl.DefaultKaptcha newBeeMallLoginKaptcha = new com.google.code.kaptcha.impl.DefaultKaptcha();
    Properties properties = new Properties();
    properties.put("kaptcha.border", "no");
    properties.put("kaptcha.textproducer.font.color", "27,174,171");
    properties.put("kaptcha.noise.color", "20,33,42");
    properties.put("kaptcha.textproducer.font.size", "30");
    properties.put("kaptcha.image.width", "110");
    properties.put("kaptcha.image.height", "40");
    properties.put("kaptcha.session.key", Constants.MALL_VERIFY_CODE_KEY);
    properties.put("kaptcha.textproducer.char.space", "2");
    properties.put("kaptcha.textproducer.char.length", "6");
    Config config = new Config(properties);
    newBeeMallLoginKaptcha.setConfig(config);
    byte[] captchaOutputStream = null;
    ByteArrayOutputStream imgOutputStream = new ByteArrayOutputStream();
    try {
        //生产验证码字符串并保存到session中
        String verifyCode = newBeeMallLoginKaptcha.createText();
        httpServletRequest.getSession().setAttribute(Constants.MALL_VERIFY_CODE_KEY, verifyCode);
        BufferedImage challenge = newBeeMallLoginKaptcha.createImage(verifyCode);
        ImageIO.write(challenge, "jpg", imgOutputStream);
    } catch (IllegalArgumentException e) {
        httpServletResponse.sendError(HttpServletResponse.SC_NOT_FOUND);
        return;
    }
    captchaOutputStream = imgOutputStream.toByteArray();
    httpServletResponse.setHeader("Cache-Control", "no-store");
    httpServletResponse.setHeader("Pragma", "no-cache");
    httpServletResponse.setDateHeader("Expires", 0);
    httpServletResponse.setContentType("image/jpeg");
    ServletOutputStream responseOutputStream = httpServletResponse.getOutputStream();
    responseOutputStream.write(captchaOutputStream);
    responseOutputStream.flush();
    responseOutputStream.close();
}

Source File: AbstractBaseController.java From onetwo with Apache License 2.0

5 votes

protected void write(HttpServletResponse response, String contentType, byte[] data){
	if(StringUtils.isNotBlank(contentType)){
		response.setContentType(contentType);
	}
	ServletOutputStream ouput = null;
	try {
		ouput = response.getOutputStream();
		ouput.write(data);
	} catch (IOException e) {
		String msg = "write data error：";
		logger.error(msg + e.getMessage(), e);
	} finally{
		IOUtils.closeQuietly(ouput);
	}
}

Source File: JcaptchaAction.java From DWSurvey with GNU Affero General Public License v3.0

5 votes

public String execute() throws Exception {
		HttpServletRequest request = Struts2Utils.getRequest();
		HttpServletResponse response = Struts2Utils.getResponse();
        ByteArrayOutputStream out = null;
        byte[] captchaChallengeAsJpeg = null;  
        // the output stream to render the captcha image as jpeg into  
        ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();  
        try {  
            // get the session id that will identify the generated captcha.  
            // the same id must be used to validate the response, the session id  
            // is a good candidate!  
            String captchaId = request.getSession().getId();  
            // call the ImageCaptchaService getChallenge method  
            BufferedImage challenge = imageCaptchaService.getImageChallengeForID(captchaId, request.getLocale());
            // a jpeg encoder
/*** jdk1.7之后默认不支持了 **/
//            JPEGImageEncoder jpegEncoder = JPEGCodec.createJPEGEncoder(jpegOutputStream);
//            jpegEncoder.encode(challenge);

//            换成新版图片api
            ImageIO.write(challenge, "jpg", jpegOutputStream);

        } catch (Exception e) {  
            // TODO Auto-generated catch block  
            e.printStackTrace();  
        }
        captchaChallengeAsJpeg = jpegOutputStream.toByteArray();    
        // flush it in the response    
        response.setHeader("Cache-Control", "no-store");
        response.setHeader("Pragma", "no-cache");
        response.setDateHeader("Expires", 0);
        response.setContentType("image/jpeg");
        ServletOutputStream responseOutputStream = response.getOutputStream();
        responseOutputStream.write(captchaChallengeAsJpeg);
        responseOutputStream.flush();
        responseOutputStream.close();
        return null;
	}

Source File: TestCoyoteOutputStream.java From Tomcat8-Source-Read with MIT License

5 votes

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
        throws ServletException, IOException {

    resp.setContentType("text/plain");
    resp.setCharacterEncoding("UTF-8");
    ServletOutputStream sos = resp.getOutputStream();

    for (int i = start; i < start + len; i++) {
        sos.write(("OK - " + i + System.lineSeparator()).getBytes(
                StandardCharsets.UTF_8));
    }
}

Source File: TestCoyoteOutputStream.java From Tomcat8-Source-Read with MIT License

5 votes

private void doAsyncWrite(AsyncContext asyncCtxt,
        ServletOutputStream sos) throws IOException {
    while (sos.isReady()) {
        int next = asyncWriteCount.getAndIncrement();
        if (next < asyncWriteTarget) {
            sos.write(
                    ("OK - " + next + System.lineSeparator()).getBytes(
                            StandardCharsets.UTF_8));
            sos.flush();
        } else {
            asyncCtxt.dispatch("/write");
            break;
        }
    }
}

Java Code Examples for javax.servlet.ServletOutputStream#write()