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:com.age.core.utils.web.ServletUtils.java

/**
 * ?xml?//from   w  w w .  ja va2 s . co  m
 * @param response
 * @param object
 */
public static void responseXml(HttpServletResponse response, String xml) {
    try {
        response.setContentType("text/xml");
        response.getWriter().write(xml);
        response.getWriter().flush();
        response.getWriter().close();
    } catch (IOException e) {
    }
}

From source file:gov.nih.nci.caintegrator.application.util.CSVUtil.java

public static void renderCSV(HttpServletResponse response, List<List> csv) {
    PrintWriter out = null;/*w  w w  .j a  va2 s .com*/

    long randomness = System.currentTimeMillis();
    response.setContentType("application/csv");
    response.setHeader("Content-Disposition", "attachment; filename=report_" + randomness + ".csv");

    try {
        for (List row : csv) {

            out = response.getWriter();
            out.write(StringUtils.join(row.toArray(), ",") + "\r\n");
            out.flush();
        }
    } catch (Exception e) {
        out.write("error generating report");
    }
}

From source file:com.wadpam.guja.oauth2.web.Oauth2ClientAuthenticationFilter.java

private static void errorMessage(HttpServletResponse response, int responseCode, String errorMessage) {
    response.setStatus(responseCode);//from  w  ww .  j a  va  2s . c o  m
    try {
        response.getWriter().write(String.format("{\"error\":\"%s\"}", errorMessage));
        response.setContentType(APPLICATION_JSON_WITH_UTF8_CHARSET);
    } catch (IOException e) {
        LOGGER.error("Failed to write json body {}", e);
    }
}

From source file:cn.guoyukun.spring.web.utils.DownloadUtils.java

public static void download(HttpServletRequest request, HttpServletResponse response, String displayName,
        byte[] bytes) throws IOException {

    if (ArrayUtils.isEmpty(bytes)) {
        response.setContentType("text/html;charset=utf-8");
        response.setCharacterEncoding("utf-8");
        response.getWriter().write("??");
        return;//from w w  w  .j  a  v a  2s . c  om
    }

    String userAgent = request.getHeader("User-Agent");
    boolean isIE = (userAgent != null) && (userAgent.toLowerCase().indexOf("msie") != -1);

    response.reset();
    response.setHeader("Pragma", "No-cache");
    response.setHeader("Cache-Control", "must-revalidate, no-transform");
    response.setDateHeader("Expires", 0L);

    response.setContentType("application/x-download");
    response.setContentLength((int) bytes.length);

    String displayFilename = displayName.substring(displayName.lastIndexOf("_") + 1);
    displayFilename = displayFilename.replace(" ", "_");
    if (isIE) {
        displayFilename = URLEncoder.encode(displayFilename, "UTF-8");
        response.setHeader("Content-Disposition", "attachment;filename=\"" + displayFilename + "\"");
    } else {
        displayFilename = new String(displayFilename.getBytes("UTF-8"), "ISO8859-1");
        response.setHeader("Content-Disposition", "attachment;filename=" + displayFilename);
    }
    BufferedInputStream is = null;
    OutputStream os = null;
    try {

        os = response.getOutputStream();
        is = new BufferedInputStream(new ByteArrayInputStream(bytes));
        IOUtils.copy(is, os);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        IOUtils.closeQuietly(is);
    }
}

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

protected static void obtenerTotalUsuarios(HttpServletRequest request, HttpServletResponse response)
        throws IOException {
    int numC = CtrlAdmin.obtenerTotalUsuarios();
    response.setContentType("application/json;charset=UTF-8");
    PrintWriter out = response.getWriter();
    JSONObject obj = new JSONObject();
    obj.put("total", numC);
    out.print(obj);/*from  w ww . j ava  2 s . c o  m*/
}

From source file:com.dgq.utils.Struts2Utils.java

/**
 * JSON,Jackson?Java.// ww w. j  a v  a2 s  . c  om
 * 
 * @param data
 *            ?List<POJO>, POJO[], POJO, ?Map??.
 * @see #render(String, String, String...)
 */
public static void renderJson(final Object data, final String... headers) {
    HttpServletResponse response = initResponseHeader(ServletUtils.JSON_TYPE, headers);
    try {
        getObjectMapper().writeValue(response.getWriter(), data);
    } catch (IOException e) {
        throw new IllegalArgumentException(e);
    }
}

From source file:com.txtweb.wikipedia.Wikipedia.java

private static void sendResponse(HttpServletResponse httpResponse, String response) {
    try {// ww w . ja  v a  2 s  .  c o m
        httpResponse.setContentType("text/html; charset=UTF-8");
        PrintWriter out = httpResponse.getWriter();

        // Add all the surrounding HTML
        String htmlResponse = "<html><head><title>Wikipedia</title>"
                + "<meta http-equiv='Content-Type' content='text/html; charset=UTF-8' />" + "<meta name='"
                + APPKEY_NAME + "' content='" + APPKEY_CONTENT + "' />" + "</head><body>" + response
                + "</body></html>";

        out.println(htmlResponse);
    } catch (IOException e) {
        //
    }
}

From source file:com.berrysys.ussdgw.HttpUtils.java

/**
 * Queue full logic.//from  ww w.  j a  va2 s  .co m
 *
 * @param resp the resp
 * @throws IOException Signals that an I/O exception has occurred.
 */
private static void queueFullLogic(HttpServletResponse resp) throws IOException {
    // TODO Auto-generated method stub
    String response = "Message Queue full";
    resp.setContentType("text/html");
    resp.setStatus(HttpServletResponse.SC_OK);
    resp.getWriter().println(response);

}

From source file:com.voa.weixin.utils.HttpUtils.java

public static void write(HttpServletResponse response, String message) throws IOException {
    PrintWriter writer = null;/*from  w  w  w . j  a  v  a2  s .  c o m*/
    try {
        response.setHeader("Charset", "UTF-8");
        response.setCharacterEncoding("UTF-8");
        writer = response.getWriter();

        writer.write(message);
    } finally {
        if (writer != null)
            writer.close();
    }
}

From source file:myproject.MyServer.java

public static void Query(HttpServletRequest request, HttpServletResponse response) throws IOException {
    try {/*from w ww .j a va2 s.  co m*/
        String jsonString = IOUtils.toString(request.getInputStream());
        JSONObject json = (JSONObject) JSONValue.parse(jsonString);
        String query = (String) json.get("query");
        String result = database.runQuery(query);
        response.getWriter().write(result);
    } catch (Exception ex) {
        JSONObject output = new JSONObject();
        output.put("error", "Connection failed: " + ex.getMessage());
        response.getWriter().write(JSONValue.toJSONString(output));
    }
}