Example usage for javax.servlet.http HttpServletResponse getWriter

Introduction

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

Prototype

public PrintWriter getWriter() throws IOException;

Source Link

Document

Returns a PrintWriter object that can send character text to the client.

Usage

From source file:co.edu.UNal.ArquitecturaDeSoftware.Bienestar.Vista.App.Admin.CUDEventos.java

protected static void actualizarConvocatoria(HttpServletRequest request, HttpServletResponse response)
        throws IOException {
    ArrayList r = CtrlAdmin.actualizarConvocatoria(Integer.parseInt(request.getParameter("0")), // id
            request.getParameter("1"), // nombre
            request.getParameter("2"), // descripcin
            request.getParameter("4"), // fin
            Integer.parseInt(request.getParameter("6")) // cupos
    );//from  www .  j  a  v  a2s .c o m

    response.setContentType("application/json;charset=UTF-8");
    PrintWriter out = response.getWriter();
    if (r.get(0) == "error") {
        JSONObject obj = new JSONObject();
        obj.put("isError", true);
        obj.put("errorDescrip", r.get(1));
        out.print(obj);
    } else if (r.get(0) == "isExitoso") {
        JSONObject obj = new JSONObject();
        obj.put("Exitoso", true);
        out.print(obj);
    } else
        Util.errordeRespuesta(r, out);
}

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From source file:com.adnature.framework.util.Struts2Utils.java

/**
 * .//from  w  w w.  j av  a  2 s  . c o m
 * 
 * eg. <br/>
 * render("text/plain", "hello", "encoding:GBK"); <br/>
 * render("text/plain", "hello", "no-cache:false"); <br/>
 * render("text/plain", "hello", "encoding:GBK", "no-cache:false");
 * 
 * @param headers
 *            ??header??"encoding:""no-cache:",UTF-8true.
 */
public static void render(final String contentType, final String content, final String... headers) {
    try {
        // ?headers?
        String encoding = ENCODING_DEFAULT;
        boolean noCache = NOCACHE_DEFAULT;
        for (String header : headers) {
            String headerName = StringUtils.substringBefore(header, ":");
            String headerValue = StringUtils.substringAfter(header, ":");

            if (StringUtils.equalsIgnoreCase(headerName, ENCODING_PREFIX)) {
                encoding = headerValue;
            } else if (StringUtils.equalsIgnoreCase(headerName, NOCACHE_PREFIX)) {
                noCache = Boolean.parseBoolean(headerValue);
            } else {
                throw new IllegalArgumentException(headerName + "??header");
            }
        }

        HttpServletResponse response = ServletActionContext.getResponse();

        // headers?
        String fullContentType = contentType + ";charset=" + encoding;
        response.setContentType(fullContentType);
        if (noCache) {
            response.setHeader("Pragma", "No-cache");
            response.setHeader("Cache-Control", "no-cache");
            response.setDateHeader("Expires", 0);
        }

        response.getWriter().write(content);
        response.getWriter().flush();

    } catch (IOException e) {
        logger.error(e.getMessage(), e);
    }
}

---

From source file:org.apache.hadoop.yarn.server.webproxy.WebAppProxyServlet.java

/**
 * Warn the user that the link may not be safe!
 * @param resp the http response/*from   w  w w . ja  va  2s  .com*/
 * @param link the link to point to
 * @param user the user that owns the link.
 * @throws IOException on any error.
 */
private static void warnUserPage(HttpServletResponse resp, String link, String user, ApplicationId id)
        throws IOException {
    //Set the cookie when we warn which overrides the query parameter
    //This is so that if a user passes in the approved query parameter without
    //having first visited this page then this page will still be displayed 
    resp.addCookie(makeCheckCookie(id, false));
    resp.setContentType(MimeType.HTML);
    Page p = new Page(resp.getWriter());
    p.html().h1("WARNING: The following page may not be safe!").h3()._("click ").a(link, "here")
            ._(" to continue to an Application Master web interface owned by ", user)._()._();
}

---

From source file:com.xqdev.jam.MLJAM.java

private static void sendStringResponse(HttpServletResponse res, String s) throws IOException {
    res.setContentType("text/plain; charset=UTF-8");
    Writer w = res.getWriter();
    w.write(s);/*  w  w w.j  a va2 s.  com*/
    w.flush();
}

---

From source file:com.erudika.para.rest.RestUtils.java

/**
 * A generic JSON response handler//from   w  ww  .  ja va  2s  .  co m
 * @param response the response to write to
 * @param status status code
 * @param message error message
 */
public static void returnStatusResponse(HttpServletResponse response, int status, String message) {
    if (response == null) {
        return;
    }
    PrintWriter out = null;
    try {
        response.setStatus(status);
        response.setContentType(MediaType.APPLICATION_JSON);
        out = response.getWriter();
        ParaObjectUtils.getJsonWriter().writeValue(out,
                getStatusResponse(Response.Status.fromStatusCode(status), message).getEntity());
    } catch (Exception ex) {
        logger.error(null, ex);
    } finally {
        if (out != null) {
            out.close();
        }
    }
}

---

From source file:com.erudika.para.rest.RestUtils.java

/**
 * A generic JSON response returning an object. Status code is always {@code 200}.
 * @param response the response to write to
 * @param obj an object/*from  ww w  . ja  va  2s  .com*/
 */
public static void returnObjectResponse(HttpServletResponse response, Object obj) {
    if (response == null) {
        return;
    }
    PrintWriter out = null;
    try {
        response.setStatus(HttpServletResponse.SC_OK);
        response.setContentType(MediaType.APPLICATION_JSON);
        out = response.getWriter();
        ParaObjectUtils.getJsonWriter().writeValue(out, obj);
    } catch (Exception ex) {
        logger.error(null, ex);
    } finally {
        if (out != null) {
            out.close();
        }
    }
}

---

From source file:myproject.MyServer.java

public static void Add(HttpServletRequest request, HttpServletResponse response) throws IOException {
    try {//from w  w  w .j  a  v  a  2 s . c o m
        String jsonString = IOUtils.toString(request.getInputStream());
        JSONObject json = (JSONObject) JSONValue.parse(jsonString);
        String student_name = (String) json.get("student_name");
        Long regno = (Long) json.get("regno");
        Double cgpa = (Double) json.get("cgpa");

        String query = String.format(
                "INSERT INTO student " + "(student_name, regno, cgpa) " + "VALUES('%s',%d,%f)",
                JSONValue.escape(student_name), regno, cgpa);

        database.runUpdate(query);

        String result = database.getStudent(regno);
        response.getWriter().write(result);
    } catch (Exception ex) {
        JSONObject output = new JSONObject();
        output.put("error", "Connection failed: " + ex.getMessage());
        response.getWriter().write(JSONValue.toJSONString(output));
    }
}

---

From source file:de.mpg.escidoc.services.fledgeddata.webservice.oaiServlet.java

/**
 * Get a response Writer depending on acceptable encodings
 * @param request the servlet's request information
 * @param response the servlet's response information
 * @exception IOException an I/O error occurred
 *//*  w  w w .  j  a  v a 2  s .c  o m*/
public static Writer getWriter(HttpServletRequest request, HttpServletResponse response) throws IOException {
    Writer out;
    String encodings = request.getHeader("Accept-Encoding");

    if (encodings != null && encodings.indexOf("gzip") != -1) {
        response.setHeader("Content-Encoding", "gzip");
        out = new OutputStreamWriter(new GZIPOutputStream(response.getOutputStream()), "UTF-8");
    } else if (encodings != null && encodings.indexOf("deflate") != -1) {
        response.setHeader("Content-Encoding", "deflate");
        out = new OutputStreamWriter(new DeflaterOutputStream(response.getOutputStream()), "UTF-8");
    } else {
        out = response.getWriter();
    }
    return out;
}

---

From source file:org.artifactory.util.HttpUtils.java

public static void sendErrorResponse(HttpServletResponse response, int statusCode, String message)
        throws IOException {
    response.setContentType(MediaType.APPLICATION_JSON_VALUE);
    response.setStatus(statusCode);//from  w  ww  . j  a v a 2s .  c  o  m
    ObjectMapper mapper = new ObjectMapper();
    mapper.configure(SerializationConfig.Feature.INDENT_OUTPUT, true);
    ErrorResponse errorResponse = new ErrorResponse(statusCode, message);
    response.getWriter().write(mapper.writeValueAsString(errorResponse));
}

---

From source file:gov.nih.nci.evs.browser.servlet.ValueSetServlet.java

public static void create_vs_subtree(HttpServletRequest request, HttpServletResponse response, int view,
        String dictionary, String version, String vsd_uri) {

    request.getSession().removeAttribute("b");
    request.getSession().removeAttribute("m");

    response.setContentType("text/html");
    PrintWriter out = null;//from w w  w  .  java2s . c  om

    //String checked_vocabularies = HTTPUtils.cleanXSS((String) request.getParameter("checked_vocabularies"));
    //String partial_checked_vocabularies = HTTPUtils.cleanXSS((String) request.getParameter("partial_checked_vocabularies"));
    //System.out.println("partial_checked_vocabularies: " + partial_checked_vocabularies);

    try {
        out = response.getWriter();
    } catch (Exception ex) {
        ex.printStackTrace();
        return;
    }

    //String message = (String) request.getSession().getAttribute("message");

    try {
        out.close();
    } catch (Exception ex) {
        ex.printStackTrace();
        return;
    }
}

---

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