Example usage for javax.servlet.http HttpServletResponse getWriter

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

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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:org.chtijbug.drools.platform.web.filter.DynamicBaseFilter.java

@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response,
        FilterChain filterChain) throws ServletException, IOException {
    logger.debug(">> doFilterInternal()");
    try {//from ww  w.  java2s  .  c o m
        PrintWriter out = response.getWriter();
        CharResponseWrapper wrapper = new CharResponseWrapper(response);
        filterChain.doFilter(request, wrapper);

        String baseHref = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()
                + request.getContextPath() + "/";
        logger.debug("About to replace the base href element with {}", baseHref);
        String modifiedHtml = baseElementPattern.matcher(wrapper.toString())
                .replaceAll("<base href=\"" + baseHref + "\"");
        logger.debug("Modified HTML content : {}", modifiedHtml);
        // Write our modified text to the real response
        response.setContentLength(modifiedHtml.getBytes().length);
        out.write(modifiedHtml);
        out.close();
    } catch (Throwable t) {
        logger.error(t.getMessage());
    } finally {
        logger.debug("<< doFilterInternal()");
    }
}

From source file:ProductServlet.java

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
    try (PrintWriter out = response.getWriter()) {
        Connection conn = getConnection();
        Statement stmt = conn.createStatement();

        if (!request.getParameterNames().hasMoreElements()) {
            out.println(getResults("SELECT * FROM product"));
        } else {//from   w ww. j a  v a2s  . co  m
            if (request.getParameter("productID") == null) {
                out.println(getResults("SELECT * FROM product ORDER BY productID DESC LIMIT 1"));
            } else {
                int id = Integer.parseInt(request.getParameter("productID"));
                out.println(getResults("SELECT * FROM product WHERE productID = ?", String.valueOf(id)));
            }
        }
    } catch (SQLException ex) {
        Logger.getLogger(ProductServlet.class.getName()).log(Level.SEVERE, null, ex);
    } catch (ClassNotFoundException ex) {
        Logger.getLogger(ProductServlet.class.getName()).log(Level.SEVERE, null, ex);
    }
}

From source file:com.imagelake.android.settings.Servlet_PrivilegeSetting.java

protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws IOException, ServletException {
    PrintWriter out = response.getWriter();
    try {/*from w  w  w .  jav a  2 s  .  c o m*/
        String type = request.getParameter("type");

        if (type != null && !type.equals("")) {

            if (type.equals("AllUserTypes")) {
                String k = inf.listPrivilages();
                System.out.println(k);
                out.write(k);
            } else if (type.equals("AddUserTypes")) {
                String ustype = request.getParameter("ustype");
                if (ustype != null && !ustype.trim().equals("")) {
                    boolean k = udi.addUsertType(ustype);
                    if (k) {
                        out.write("msg=Add_User_Type_Successfully...");
                    } else {
                        out.write("msg=Unable to complete the action.");
                    }
                } else {
                    out.write("msg=Internal server error,Please try again later.");
                }
            } else if (type.equals("TypePrivilege")) {
                String id = request.getParameter("userType");
                List<Privilages> li = pdi.listAll(Integer.parseInt(id));
                List<Interfaces> lf = inf.listAll((ArrayList<Privilages>) li);
                ja = new JSONArray();
                for (int i = 0; i < lf.size(); i++) {
                    Interfaces in = lf.get(i);
                    JSONObject jo = new JSONObject();
                    jo.put("id", in.getInterface_id());
                    jo.put("name", in.getDisplay_name());
                    jo.put("state", in.getState());
                    ja.add(jo);
                }
                out.write("json=" + ja.toJSONString());
            } else if (type.equals("remvinf")) {
                String id = request.getParameter("userType");
                String infid = request.getParameter("infid");

                boolean k = pdi.updatePrivilage(Integer.parseInt(id), Integer.parseInt(infid), 2);
                if (k) {
                    out.write("msg=Remve_Successfully...");
                } else {
                    out.write("msg=Unable to complete the action.");
                }
            } else if (type.equals("AllInterface")) {
                String k = inf.listInterfaces();
                System.out.println(type);
                System.out.println(k);
                out.write(k);
            } else if (type.equals("addinf")) {
                String id = request.getParameter("userType");
                String infid = request.getParameter("intfid");
                if (id != null && !id.trim().equals("") && Integer.parseInt(id) != 0 && infid != null
                        && !infid.trim().equals("") && Integer.parseInt(infid) != 0) {
                    boolean k = pdi.addPrivilage(Integer.parseInt(id), Integer.parseInt(infid), 1);
                    if (k) {
                        out.write("msg=Int_Add_Successfully...");
                    } else {
                        out.write("msg=Unable to complete the action.");
                    }
                } else {
                    out.write("msg=Internal server error,Please try again later.");
                }
            }
        } else {
            out.write("msg=Internal server error,Please try again later.");
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

}

From source file:controler.purchaseServlet.java

/**
 * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
 * methods./*w ww . ja va 2 s.c om*/
 *
 * @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("text/html;charset=UTF-8");
    PrintWriter out = response.getWriter();
    DbModules dm = new DbModules();
    HttpSession session = request.getSession(true);

    try {
        String myValues[] = request.getParameterValues("myValues");
        Object attribValue = session.getAttribute("customerID");
        String value = " " + attribValue;
        value = value.trim();
        String message = null;
        if ("null".equals(value) || "".equals(value)) {
            message = "Please log in first to make any purchases";
        } else {
            try {
                message = dm.UpdatePurchase(myValues, value);
            } catch (ParseException ex) {
                Logger.getLogger(purchaseServlet.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
        out.print(message);

    } finally {
        out.close();
    }
}

From source file:edu.cornell.mannlib.vitro.webapp.controller.admin.SparqlQueryController.java

private void do400BadRequest(String message, HttpServletResponse resp) throws IOException {
    resp.setStatus(400);/*from w w  w .j av  a 2s .  c om*/
    resp.getWriter().println(message);
}

From source file:me.uni.sushilkumar.geodine.util.WhatsCooking.java

/** 
 * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
 * @param request servlet request//from  w  w  w  .j  a v a 2  s .  c  om
 * @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("application/json");
    PrintWriter out = response.getWriter();
    try {
        JSONObject obj = new JSONObject();
        JSONArray array = new JSONArray();
        DBConnection con = new DBConnection();
        ArrayList<String> cuisineList = con.getCuisineList();
        Random generator = new Random();
        int size = cuisineList.size();
        for (int i = 0; i < 10; i++) {
            JSONObject temp = new JSONObject();
            String title = cuisineList.get(generator.nextInt(size));
            //title=WordUtils.capitalize(title);
            temp.put("title", title);
            title = title.replaceAll("\\s+", "-");
            String link = "cuisine/" + title;
            temp.put("link", link);
            array.add(temp);
        }
        obj.put("links", array);
        out.println(obj.toJSONString());
    } catch (SQLException ex) {
        Logger.getLogger(WhatsCooking.class.getName()).log(Level.SEVERE, null, ex);
    } finally {
        out.close();
    }
}

From source file:checkCoupon.java

/**
 * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
 * methods.//from   w ww  . j  a va  2  s.co 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("application/json;charset=UTF-8");
    try (PrintWriter out = response.getWriter()) {
        String deviceId = request.getParameter("deviceId");
        String couponId = request.getParameter("couponId");

        String url = "https://tgl.standardchartered.com/bridgeheadi18n/mcoupon/check?deviceId=" + deviceId
                + "&couponId=" + couponId;
        HttpClient client = new DefaultHttpClient();
        HttpGet req = new HttpGet(url);
        HttpResponse res = client.execute(req);
        BufferedReader rd = new BufferedReader(new InputStreamReader(res.getEntity().getContent()));
        String line = "";
        String total = "";
        while ((line = rd.readLine()) != null) {
            total += line;
        }

        total = total.substring(0, total.length());
        out.println(total);
    }
}

From source file:com.facebook.tsdb.tsdash.server.DataEndpoint.java

@Override
@SuppressWarnings("unchecked")
public void doGet(HttpServletRequest request, HttpServletResponse response)
        throws IOException, ServletException {
    response.setContentType("text/plain");
    PrintWriter out = response.getWriter();
    try {/*w ww  . j av a 2s . c o  m*/
        long ts = System.currentTimeMillis();
        // decode parameters
        String jsonParams = request.getParameter("params");
        if (jsonParams == null) {
            throw new Exception("Parameters not specified");
        }
        JSONObject jsonParamsObj = (JSONObject) JSONValue.parse(jsonParams);
        long tsFrom = (Long) jsonParamsObj.get("tsFrom");
        long tsTo = (Long) jsonParamsObj.get("tsTo");
        JSONArray metricsArray = (JSONArray) jsonParamsObj.get("metrics");
        if (metricsArray.size() == 0) {
            throw new Exception("No metrics to fetch");
        }
        MetricQuery[] metricQueries = new MetricQuery[metricsArray.size()];
        for (int i = 0; i < metricsArray.size(); i++) {
            metricQueries[i] = MetricQuery.fromJSONObject((JSONObject) metricsArray.get(i));
        }

        TsdbDataProvider dataProvider = TsdbDataProviderFactory.get();
        Metric[] metrics = new Metric[metricQueries.length];
        for (int i = 0; i < metrics.length; i++) {
            MetricQuery q = metricQueries[i];
            metrics[i] = dataProvider.fetchMetric(q.name, tsFrom, tsTo, q.tags, q.orders);
            metrics[i] = metrics[i].dissolveTags(q.getDissolveList(), q.aggregator);
            if (q.rate) {
                metrics[i].computeRate();
            }
        }
        long loadTime = System.currentTimeMillis() - ts;
        JSONObject responseObj = new JSONObject();
        JSONArray encodedMetrics = new JSONArray();
        for (Metric metric : metrics) {
            encodedMetrics.add(metric.toJSONObject());
        }
        responseObj.put("metrics", encodedMetrics);
        responseObj.put("loadtime", loadTime);
        DataTable dataTable = new DataTable(metrics);
        responseObj.put("datatable", dataTable.toJSONObject());
        out.println(responseObj.toJSONString());
        long encodingTime = System.currentTimeMillis() - ts - loadTime;
        logger.info("[Data] time frame: " + (tsTo - tsFrom) + "s, " + "load time: " + loadTime + "ms, "
                + "encoding time: " + encodingTime + "ms");
    } catch (Exception e) {
        out.println(getErrorResponse(e));
    }
    out.close();
}

From source file:controller.UploadServlet.java

protected void processRequest(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    response.setContentType("text/html;charset=UTF-8");
    try (PrintWriter out = response.getWriter()) {
        /* TODO output your page here. You may use following sample code. */
        out.println("<!DOCTYPE html>");
        out.println("<html>");
        out.println("<head>");
        out.println("<title>Servlet UploadServlet</title>");
        out.println("</head>");
        out.println("<body>");
        out.println("<h1>Servlet UploadServlet at " + request.getContextPath() + "</h1>");
        out.println("</body>");
        out.println("</html>");
    }/*from  w  w  w.  java 2s  .  co m*/
}

From source file:com.commercehub.dropwizard.BuildInfoServlet.java

private void writeAllJson(HttpServletResponse response) throws IOException {
    response.setContentType(MediaType.APPLICATION_JSON);
    objectWriter.writeValue(response.getWriter(), manifestAttributes);
}