Example usage for javax.servlet.http HttpServletResponse reset

Introduction

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

Prototype

public void reset();

Source Link

Document

Clears any data that exists in the buffer as well as the status code, headers.

Usage

From source file:com.aurel.track.dbase.ReadyTesterServlet.java

private void prepareResponse(HttpServletResponse httpServletResponse) {
    try {/*from w  w w. j  a v a  2s  .  c om*/
        httpServletResponse.reset();
        httpServletResponse.setCharacterEncoding("UTF-8");
    } catch (Exception e) {
        //when the <s:action/> is present on the jsp
        //(mainly getting root nodes the same response object is used, and second time it can't be reseted)
    }
    httpServletResponse.setContentType("application/json");
}

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From source file:com.intel.rsa.podm.rest.filters.UrlValidationFilter.java

private void setErrorResponse(HttpServletResponse httpServletResponse, ErrorResponse error) {
    httpServletResponse.reset();
    httpServletResponse.resetBuffer();//from w  ww.j  a va2s .c o  m

    //we have to add since this request is outside our app
    httpServletResponse.addHeader("OData-Version", "4.0");
    httpServletResponse.addHeader("Cache-Control", "max-age=0");
    httpServletResponse.addHeader("Access-Control-Allow-Origin", "*");

    httpServletResponse.setCharacterEncoding(DEFAULT_ENCODING_HTTP);
    httpServletResponse.setContentType(MediaType.APPLICATION_JSON);
    httpServletResponse.setStatus(error.getErrorCode());

    try (PrintWriter responseWriter = httpServletResponse.getWriter()) {
        responseWriter.print(getJsonResponse(error));
        responseWriter.flush();
    } catch (IOException e) {
        logger.e("Unable to write response. Sending empty body response.", e);
    }
}

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From source file:com.usefullc.platform.common.utils.IOUtils.java

/**
 * /* ww  w  .j a  v a 2  s. c  om*/
 * 
 * @param path
 * @param fileName
 * @param response
 * @return
 */
public static void download(String path, String fileName, HttpServletResponse response) {
    try {

        if (StringUtils.isEmpty(path)) {
            throw new IllegalArgumentException("?");
        } else {
            File file = new File(path);
            if (!file.exists()) {
                throw new IllegalArgumentException("??");
            }
        }
        if (StringUtils.isEmpty(fileName)) {
            throw new IllegalArgumentException("???");
        }
        if (response == null) {
            throw new IllegalArgumentException("response ?");
        }

        // path
        File file = new File(path);

        // ??
        InputStream fis = new BufferedInputStream(new FileInputStream(path));
        byte[] buffer = new byte[fis.available()];
        fis.read(buffer);
        fis.close();
        // response
        response.reset();

        // ??linux ?  linux utf-8,windows  GBK)
        String defaultEncoding = System.getProperty("file.encoding");
        if (defaultEncoding != null && defaultEncoding.equals("UTF-8")) {

            response.addHeader("Content-Disposition",
                    "attachment;filename=" + new String(fileName.getBytes("GBK"), "iso-8859-1"));
        } else {
            response.addHeader("Content-Disposition",
                    "attachment;filename=" + new String(fileName.getBytes(), "iso-8859-1"));
        }

        // responseHeader
        response.addHeader("Content-Length", "" + file.length());
        response.setContentType("application/octet-stream");
        OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
        toClient.write(buffer);
        toClient.flush();
        toClient.close();
    } catch (Exception ex) {
        ex.printStackTrace();
    }
}

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From source file:fll.web.api.ChallengeDescriptionServlet.java

@Override
protected final void doGet(final HttpServletRequest request, final HttpServletResponse response)
        throws IOException, ServletException {
    final ServletContext application = getServletContext();

    response.reset();
    response.setContentType("application/json");
    final PrintWriter writer = response.getWriter();

    final ObjectMapper jsonMapper = new ObjectMapper();

    final ChallengeDescription challengeDescription = ApplicationAttributes
            .getChallengeDescription(application);

    jsonMapper.writeValue(writer, challengeDescription);
}

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From source file:fll.web.api.challengeDescription.SubjectiveCategories.java

@Override
protected final void doGet(final HttpServletRequest request, final HttpServletResponse response)
        throws IOException, ServletException {
    final ServletContext application = getServletContext();

    response.reset();
    response.setContentType("application/json");
    final PrintWriter writer = response.getWriter();

    final ObjectMapper jsonMapper = new ObjectMapper();

    final ChallengeDescription challengeDescription = ApplicationAttributes
            .getChallengeDescription(application);
    final List<ScoreCategory> categories = challengeDescription.getSubjectiveCategories();

    jsonMapper.writeValue(writer, categories);
}

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From source file:de.u808.simpleinquest.web.download.DownloadController.java

private void handleDownload(HttpServletResponse response, File file) throws IOException {
    response.reset();
    response.setContentType(mimeTypeRegistry.getMimeType(file));
    response.setHeader("Pragma", "private");
    response.setHeader("Cache-Control", "private, must-revalidate");
    response.setHeader("Content-Disposition", "attachment; filename=\"" + file.getName() + "\"");

    FileInputStream fis = new FileInputStream(file);
    OutputStream os = response.getOutputStream();
    int len = -1;
    int x = 0;/*from   w w w. ja va  2  s.  c  om*/
    while ((len = fis.read(buf)) != -1) {
        os.write(buf, 0, len);
    }

    response.getOutputStream().flush();
    response.getOutputStream().close();
}

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From source file:com.lbb.controller.FileUploadController.java

@RequestMapping("download.html")
public void download(String fileName, HttpServletResponse response) throws IOException {
    OutputStream os = response.getOutputStream();
    try {/*from  w w  w.ja  v  a 2s.  c o  m*/
        response.reset();
        response.setHeader("Content-Disposition", "attachment; filename=" + fileName);
        response.setContentType("image/jpeg; charset=utf-8");
        os.write(FileUtils.readFileToByteArray(FileUpload.getFile(fileName)));
        os.flush();
    } finally {
        if (os != null) {
            os.close();
        }
    }
}

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From source file:com.pearson.developer.xapi.proxy.AuthFilter.java

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
        throws java.io.IOException, ServletException {

    HttpServletRequest req = (HttpServletRequest) request;

    // AJAX will preflight xAPI request with OPTIONS request without Authorization header
    if ("OPTIONS".equals(req.getMethod())) {
        chain.doFilter(request, response);
        return;//  w w  w. jav a  2 s  . c o m
    }

    boolean authorized = false;
    try { // decode and verify the basic auth credentials
        String authHeader = req.getHeader("Authorization");
        authHeader = authHeader.substring("Basic ".length());
        String decodedAuthHeader = new String(Base64.decodeBase64(authHeader), "UTF-8");
        String[] credentials = decodedAuthHeader.split(":");
        if (credentials.length == 2) {
            String username = credentials[0];
            String password = credentials[1];
            authorized = SessionDatabase.verify(username, password);
        }
    } catch (Exception e) {
        // do nothing
    }

    // proceed to xAPI if session was authorized
    if (authorized) {
        final String targetBasicAuth = config.getInitParameter("targetBasicAuth");

        // need to give the LRS it's expected Authorization value
        HttpServletRequestWrapper requestWrapper = new HttpServletRequestWrapper(req) {
            @Override
            public String getHeader(String name) {
                if ("Authorization".equalsIgnoreCase(name)) {
                    return targetBasicAuth;
                }
                return super.getHeader(name);
            }

            @Override
            public Enumeration<String> getHeaders(String name) {
                if ("Authorization".equalsIgnoreCase(name)) {
                    List<String> values = new ArrayList<String>();
                    values.add(targetBasicAuth);
                    return Collections.enumeration(values);
                }
                return super.getHeaders(name);
            }
        };
        chain.doFilter(requestWrapper, response);
        return;
    }

    // respond with a 401 if missing auth
    HttpServletResponse resp = (HttpServletResponse) response;
    resp.reset();
    resp.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
    resp.getWriter().println("401 - Unauthorized");
}

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From source file:com.zuoxiaolong.blog.web.controller.AbstractWebController.java

/**
 * //from   ww w  .j  a v a2  s. co m
 *
 * @param string
 * @return
 */
protected void renderText(String string, String type) {
    try {
        HttpServletResponse response = getResponse();
        response.reset();
        response.setContentType(type);
        response.setCharacterEncoding("utf-8");
        response.getWriter().print(string);
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}

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From source file:com.palantir.stash.stashbot.servlet.BuildStatusReportingServlet.java

private void printOutput(JSONObject output, HttpServletRequest req, HttpServletResponse res)
        throws IOException {
    res.reset();
    res.setStatus(200);/*from  w w w.  j  av a 2 s. co  m*/
    res.setContentType("application/json;charset=UTF-8");
    Writer w = res.getWriter();
    try {
        w.append(output.toString(4));
    } catch (JSONException e) {
        w.append(output.toString());
    }
    w.close();
}

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