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:FormLogin.java

public void doPost(HttpServletRequest req, HttpServletResponse resp)
        throws ServletException, java.io.IOException {
    resp.setContentType("text/html");
    java.io.PrintWriter out = resp.getWriter();
    HttpSession session = req.getSession(true);
    String user = (String) session.getAttribute(USER_KEY);

    if (user == null) {
        String username = req.getParameter(FIELD_USER);
        String password = req.getParameter(FIELD_PASSWORD);

        if (!validUser(username, password)) {
            out.println("<html>");
            out.println("<title>Invalid User</title>");
            out.println("<body><center><h2>" + "Invalid User!</h2><br>");
            out.println("Press the 'Back' button to try again");
            out.println("</center></body></html>");
            out.flush();//www.j  a v  a2  s.  c  o m
            return;
        }
        session.setAttribute(USER_KEY, username);
    }
    resp.sendRedirect(req.getRequestURI());
}

From source file:productClass.java

/**
 * Handles the HTTP <code>GET</code> method.
 *
 * Select statement for the database connect to retrieve values
 * //w ww  .ja va2s.  c  o m
 * @param request servlet request
 * @param response servlet response
 */
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) {
    try (PrintWriter out = response.getWriter()) {
        if (!request.getParameterNames().hasMoreElements()) {
            out.println(getResults("SELECT * FROM product"));
        } else {
            int productID = Integer.parseInt(request.getParameter("productID"));
            out.println(getResults("SELECT * FROM product WHERE productID = ?", String.valueOf(productID)));
        }
    } catch (IOException ex) {
        Logger.getLogger(productClass.class.getName()).log(Level.SEVERE, null, ex);
    }
}

From source file:com.tvst.api.servlet.HomeServlet.java

/**
 * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
 * methods.//  w ww.j a v a  2  s  .  com
 *
 * @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()) {
        JSONObject object = new JSONObject();
        object.put(JSONKey.status.toString(), 1);
        object.put(JSONKey.server_time.toString(), System.currentTimeMillis());
        out.println(object.toString());
    }
}

From source file:FormLogin.java

public void doGet(HttpServletRequest req, HttpServletResponse resp)
        throws ServletException, java.io.IOException {
    resp.setContentType("text/html");
    java.io.PrintWriter out = resp.getWriter();
    resp.setHeader("Expires", "Tues, 01 Jan 1980 00:00:00 GMT");
    String uri = req.getRequestURI();

    HttpSession session = req.getSession();
    String user = (String) session.getAttribute(USER_KEY);

    if (user == null) {
        login(out, uri);//from  w  ww .java 2 s  . c om
        return;
    }
    out.println("<html>");
    out.println("<head>");
    out.println("<title>Welcome</title>");
    out.println("</head>");
    out.println("<body>");
    out.println("<center><h2>Welcome to our site!</h2>");
    out.println("</center><br><br>");
    out.println("</body>");
    out.println("</html>");
    out.flush();
}

From source file:productsave.java

protected void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    PrintWriter out = response.getWriter();
    try {/*  ww w .  j  ava2  s . c  o  m*/
        ServletContext x = this.getServletContext();
        String path = x.getRealPath("/images");

        System.out.println(path + " path");
        DiskFileUpload p = new DiskFileUpload();
        List q = p.parseRequest(request);
        Iterator z = q.iterator();
        while (z.hasNext()) {
            FileItem f = (FileItem) z.next();
            if (f.isFormField() == true) {
                //non-file data
                System.out.println("executed");
                String h = f.getFieldName();
                String data = f.getString();
                if (h.equalsIgnoreCase("productname")) {
                    productname = data;
                } else if (h.equalsIgnoreCase("category")) {
                    categoryid = data;
                    System.out.println(categoryid + " cccc");
                } else if (h.equalsIgnoreCase("price")) {
                    price = data;
                } else if (h.equalsIgnoreCase("description")) {
                    description = data;
                }

            } else {
                //file data
                String filename = f.getName();
                if (filename != null && filename.length() > 0) {
                    File g = new File(filename);

                    filename = g.getName();

                    //creating unique file name
                    long w = System.currentTimeMillis();
                    filename = w + filename;
                    System.out.println("path " + path + " file " + filename);
                    //upload file
                    File t = new File(path, filename);
                    f.write(t);
                    if (f.getFieldName().equals("image")) {
                        image = filename;
                    }
                }

            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

    productbean product = new productbean();
    product.setProductname(productname);
    product.setCategoryid(categoryid);
    product.setDescription(description);
    product.setImage(image);
    product.setPrice(price);
    int count = product.save();
    if (count != 0) {
        out.println("1");
    } else {
        out.println("0");
    }
}

From source file:com.epam.wilma.webapp.config.servlet.stub.upload.MultiPartFormUploadServlet.java

@Override
protected void doGet(final HttpServletRequest request, final HttpServletResponse response)
        throws ServletException, IOException {
    response.setContentType("text/html");
    PrintWriter out = response.getWriter();

    boolean isMultipartContent = ServletFileUpload.isMultipartContent(request);
    if (!isMultipartContent) {
        out.println("You are not trying to upload");
    } else {//from w  w  w. j  a  v  a2  s.c o m
        try {
            List<FileItem> fields = upload.parseRequest(request);
            String msg = filesParser.parseMultiPartFiles(fields);
            LOGGER.info(urlAccessLogMessageAssembler.assembleMessage(request, msg));
            out.write(msg);
        } catch (Exception e) {
            response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
            out.write("File uploading failed! cause: " + e.getMessage());
            LOGGER.info(urlAccessLogMessageAssembler.assembleMessage(request, e.getMessage()), e);
        }
    }
}

From source file:com.mondospider.spiderlocationapi.SetSpiderStatus.java

public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {

    if (!req.isSecure()) {
        resp.getWriter()
                .println("{\"result:error\", \"reason\":\"SSL secured connection required for updates.\"}");
        return;/*from  ww  w  .  j av a2 s.  c o m*/
    }

    if (req.getParameter("status") == null) {
        //Display Error&Help
        try {
            req.getRequestDispatcher("/index.html").forward(req, resp);
        } catch (ServletException e) {
            resp.getWriter().println("{\"result:error\", \"reason\":\"Forward failed\"}");
            e.printStackTrace();
            return;
        }
    }

    // Permission Check
    String key = req.getParameter("pwd");
    if (!isSecretKeyTrue(key)) {
        // accessDenied
        resp.getWriter().println("{\"result:error\", \"reason\":\"Wrong Key\"}");
        return;
    }

    try {

        String status = req.getParameter("status");

        // Update Position
        updateStatus(status);

        responseResp.put("result", "success");
        responseResp.put("updated_on", new Date());

        resp.setContentType("text/plain");

        resp.getWriter().println(responseResp.toString(2));
        return;

    } catch (JSONException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    resp.sendRedirect("/index.html");

}

From source file:jsst.server.FrontController.java

private void makeResponse(HttpServletResponse response, TestResult testResult)
        throws ServletException, IOException {
    PrintWriter writer = response.getWriter();
    try {/*  www .j av a2  s .  co  m*/
        JSONObject jsonObject = convertToJSON(testResult);
        jsonObject.write(writer);
    } catch (JSONException e) {
        throw new ServletException(e);
    } finally {
        writer.close();
    }
}

From source file:de.micromata.genome.tpsb.httpmockup.internaltest.TestServletOne.java

@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    String data = req.getParameter("data");
    if (StringUtils.contains(data, "OK") == true) {
        resp.setStatus(200);/*from   w w w  . java2 s . co m*/
        resp.getWriter().println("Ja, Kammer ist auch OK");
    } else {
        resp.setStatus(500);
        resp.getWriter().println("Ojeoje");
    }
    resp.getWriter().flush();
}

From source file:org.trimou.spring.web.view.TrimouView.java

@Override
protected void renderMergedTemplateModel(Map<String, Object> model, HttpServletRequest request,
        HttpServletResponse response) throws Exception {
    response.setContentType(getContentType());
    exposeRequestAttributesAsModel(model, request);
    final Writer writer = response.getWriter();
    try {/*from   w  w w .j  a v a  2 s. c  o  m*/
        engine.getMustache(viewName).render(writer, model);
    } catch (NullPointerException e) {
        throw new MustacheException(getUrl() + " is not exist.", e);
    } finally {
        writer.flush();
    }
}