Example usage for javax.servlet.jsp JspWriter print

Introduction

In this page you can find the example usage for javax.servlet.jsp JspWriter print.

Prototype

abstract public void print(Object obj) throws IOException;

Source Link

Document

Print an object.

Usage

From source file:dk.netarkivet.archive.webinterface.BitpreserveFileState.java

/**
 * Print a table row with a file name and a checkbox to request more info.
 *
 * @param out The stream to print to./*from w w  w  . j a  va 2  s  .  c  om*/
 * @param filename The name of the file.
 * @param rowCount The rowcount, used for styling rows.
 * @param locale The current locale for labels.
 * @throws IOException On trouble writing to stream.
 */
public static void printFileName(JspWriter out, String filename, int rowCount, Locale locale)
        throws IOException {
    ArgumentNotValid.checkNotNull(out, "JspWriter out");
    ArgumentNotValid.checkNotNullOrEmpty(filename, "String filename");
    ArgumentNotValid.checkNotNull(locale, "Locale locale");
    out.println("<tr class=\"" + HTMLUtils.getRowClass(rowCount) + "\">");
    out.println(HTMLUtils.makeTableElement(filename));
    out.print("<td>");
    out.print(makeCheckbox(Constants.GET_INFO_COMMAND, filename));
    out.print(I18N.getString(locale, "get.info"));
    out.println("</td>");
    out.println("</tr>");
}

---

From source file:org.apache.hadoop.hdfs.server.datanode.DatanodeJspHelper.java

static void generateDirectoryStructure(JspWriter out, HttpServletRequest req, HttpServletResponse resp,
        Configuration conf) throws IOException, InterruptedException {
    final String dir = JspHelper.validatePath(StringEscapeUtils.unescapeHtml(req.getParameter("dir")));
    if (dir == null) {
        out.print("Invalid input");
        return;/* w  w  w .  j a va 2s.c  o  m*/
    }
    String tokenString = req.getParameter(JspHelper.DELEGATION_PARAMETER_NAME);
    UserGroupInformation ugi = JspHelper.getUGI(req, conf);
    String namenodeInfoPortStr = req.getParameter("namenodeInfoPort");
    int namenodeInfoPort = -1;
    if (namenodeInfoPortStr != null)
        namenodeInfoPort = Integer.parseInt(namenodeInfoPortStr);
    final String nnAddr = req.getParameter(JspHelper.NAMENODE_ADDRESS);
    if (nnAddr == null) {
        out.print(JspHelper.NAMENODE_ADDRESS + " url param is null");
        return;
    }

    DFSClient dfs = getDFSClient(ugi, nnAddr, conf);
    String target = dir;
    final HdfsFileStatus targetStatus = dfs.getFileInfo(target);
    if (targetStatus == null) { // not exists
        out.print("<h3>File or directory : " + StringEscapeUtils.escapeHtml(target) + " does not exist</h3>");
        JspHelper.printGotoForm(out, namenodeInfoPort, tokenString, target, nnAddr);
    } else {
        if (!targetStatus.isDir()) { // a file
            List<LocatedBlock> blocks = dfs.getNamenode().getBlockLocations(dir, 0, 1).getLocatedBlocks();

            LocatedBlock firstBlock = null;
            DatanodeInfo[] locations = null;
            if (blocks.size() > 0) {
                firstBlock = blocks.get(0);
                locations = firstBlock.getLocations();
            }
            if (locations == null || locations.length == 0) {
                out.print("Empty file");
            } else {
                DatanodeInfo chosenNode = JspHelper.bestNode(firstBlock, conf);
                int datanodePort = chosenNode.getXferPort();
                String redirectLocation = JspHelper.Url.url(req.getScheme(), chosenNode)
                        + "/browseBlock.jsp?blockId=" + firstBlock.getBlock().getBlockId() + "&blockSize="
                        + firstBlock.getBlock().getNumBytes() + "&genstamp="
                        + firstBlock.getBlock().getGenerationStamp() + "&filename="
                        + URLEncoder.encode(dir, "UTF-8") + "&datanodePort=" + datanodePort
                        + "&namenodeInfoPort=" + namenodeInfoPort
                        + JspHelper.getDelegationTokenUrlParam(tokenString)
                        + JspHelper.getUrlParam(JspHelper.NAMENODE_ADDRESS, nnAddr);
                resp.sendRedirect(redirectLocation);
            }
            return;
        }
        // directory
        // generate a table and dump the info
        String[] headings = { "Name", "Type", "Size", "Replication", "Block Size", "Modification Time",
                "Permission", "Owner", "Group" };
        out.print("<h3>Contents of directory ");
        JspHelper.printPathWithLinks(dir, out, namenodeInfoPort, tokenString, nnAddr);
        out.print("</h3><hr>");
        JspHelper.printGotoForm(out, namenodeInfoPort, tokenString, dir, nnAddr);
        out.print("<hr>");

        File f = new File(dir);
        String parent;
        if ((parent = f.getParent()) != null)
            out.print("<a href=\"" + req.getRequestURL() + "?dir=" + parent + "&namenodeInfoPort="
                    + namenodeInfoPort + JspHelper.getDelegationTokenUrlParam(tokenString)
                    + JspHelper.getUrlParam(JspHelper.NAMENODE_ADDRESS, nnAddr)
                    + "\">Go to parent directory</a><br>");

        DirectoryListing thisListing = dfs.listPaths(target, HdfsFileStatus.EMPTY_NAME);
        if (thisListing == null || thisListing.getPartialListing().length == 0) {
            out.print("Empty directory");
        } else {
            JspHelper.addTableHeader(out);
            int row = 0;
            JspHelper.addTableRow(out, headings, row++);
            String cols[] = new String[headings.length];
            do {
                HdfsFileStatus[] files = thisListing.getPartialListing();
                for (int i = 0; i < files.length; i++) {
                    String localFileName = files[i].getLocalName();
                    // Get the location of the first block of the file
                    if (!files[i].isDir()) {
                        cols[1] = "file";
                        cols[2] = StringUtils.byteDesc(files[i].getLen());
                        cols[3] = Short.toString(files[i].getReplication());
                        cols[4] = StringUtils.byteDesc(files[i].getBlockSize());
                    } else {
                        cols[1] = "dir";
                        cols[2] = "";
                        cols[3] = "";
                        cols[4] = "";
                    }
                    String datanodeUrl = req.getRequestURL() + "?dir="
                            + URLEncoder.encode(files[i].getFullName(target), "UTF-8") + "&namenodeInfoPort="
                            + namenodeInfoPort + JspHelper.getDelegationTokenUrlParam(tokenString)
                            + JspHelper.getUrlParam(JspHelper.NAMENODE_ADDRESS, nnAddr);
                    cols[0] = "<a href=\"" + datanodeUrl + "\">" + HtmlQuoting.quoteHtmlChars(localFileName)
                            + "</a>";
                    cols[5] = new SimpleDateFormat("yyyy-MM-dd HH:mm")
                            .format(new Date((files[i].getModificationTime())));
                    cols[6] = files[i].getPermission().toString();
                    cols[7] = files[i].getOwner();
                    cols[8] = files[i].getGroup();
                    JspHelper.addTableRow(out, cols, row++);
                }
                if (!thisListing.hasMore()) {
                    break;
                }
                thisListing = dfs.listPaths(target, thisListing.getLastName());
            } while (thisListing != null);
            JspHelper.addTableFooter(out);
        }
    }
    out.print("<br><a href=\"///" + JspHelper.canonicalize(nnAddr) + ":" + namenodeInfoPort
            + "/dfshealth.jsp\">Go back to DFS home</a>");
    dfs.close();
}

---

From source file:dk.netarkivet.common.webinterface.HTMLUtils.java

/**
 * Writes out footer information to close the page.
 *
 * @param out the writer to which the information is written
 * @throws IOException if the output cannot be written
 *//* ww  w .j a  v a2s  . com*/
public static void generateFooter(JspWriter out) throws IOException {
    ArgumentNotValid.checkNotNull(out, "out");
    // Close the element containing the page content
    out.print("</td>\n");
    // Close the single row in the table
    out.print("</tr>\n");
    // Close the table
    out.print("</table>\n");
    // Add information about the running system
    out.print("<div class='systeminfo'>");
    out.print("NetarchiveSuite " + Constants.getVersionString() + ", "
            + Settings.get(CommonSettings.ENVIRONMENT_NAME));
    out.print("</div>");
    // Close the page
    out.print("</body></html>");

}

---

From source file:org.apache.hadoop.hdfs.server.datanode.DatanodeJspHelper.java

static void generateFileDetails(JspWriter out, HttpServletRequest req, Configuration conf)
        throws IOException, InterruptedException {

    long startOffset = 0;
    int datanodePort;

    final Long blockId = JspHelper.validateLong(req.getParameter("blockId"));
    if (blockId == null) {
        out.print("Invalid input (blockId absent)");
        return;/*  w  w  w  .  ja  v  a 2s  .  c  o  m*/
    }
    String tokenString = req.getParameter(JspHelper.DELEGATION_PARAMETER_NAME);
    UserGroupInformation ugi = JspHelper.getUGI(req, conf);

    String datanodePortStr = req.getParameter("datanodePort");
    if (datanodePortStr == null) {
        out.print("Invalid input (datanodePort absent)");
        return;
    }
    datanodePort = Integer.parseInt(datanodePortStr);

    final Long genStamp = JspHelper.validateLong(req.getParameter("genstamp"));
    if (genStamp == null) {
        out.print("Invalid input (genstamp absent)");
        return;
    }
    String namenodeInfoPortStr = req.getParameter("namenodeInfoPort");
    int namenodeInfoPort = -1;
    if (namenodeInfoPortStr != null)
        namenodeInfoPort = Integer.parseInt(namenodeInfoPortStr);
    final String nnAddr = StringEscapeUtils.escapeHtml(req.getParameter(JspHelper.NAMENODE_ADDRESS));
    if (nnAddr == null) {
        out.print(JspHelper.NAMENODE_ADDRESS + " url param is null");
        return;
    }

    final int chunkSizeToView = JspHelper.string2ChunkSizeToView(req.getParameter("chunkSizeToView"),
            getDefaultChunkSize(conf));

    String startOffsetStr = req.getParameter("startOffset");
    if (startOffsetStr == null || Long.parseLong(startOffsetStr) < 0)
        startOffset = 0;
    else
        startOffset = Long.parseLong(startOffsetStr);

    String path = StringEscapeUtils.unescapeHtml(req.getParameter("filename"));
    if (path == null) {
        path = req.getPathInfo() == null ? "/" : req.getPathInfo();
    }
    final String filename = JspHelper.validatePath(path);
    if (filename == null) {
        out.print("Invalid input");
        return;
    }

    final String blockSizeStr = req.getParameter("blockSize");
    if (blockSizeStr == null || blockSizeStr.length() == 0) {
        out.print("Invalid input");
        return;
    }
    long blockSize = Long.parseLong(blockSizeStr);

    final DFSClient dfs = getDFSClient(ugi, nnAddr, conf);
    List<LocatedBlock> blocks = dfs.getNamenode().getBlockLocations(filename, 0, Long.MAX_VALUE)
            .getLocatedBlocks();
    // Add the various links for looking at the file contents
    // URL for downloading the full file
    String downloadUrl = "/streamFile" + ServletUtil.encodePath(filename)
            + JspHelper.getUrlParam(JspHelper.NAMENODE_ADDRESS, nnAddr, true)
            + JspHelper.getDelegationTokenUrlParam(tokenString);
    out.print("<a name=\"viewOptions\"></a>");
    out.print("<a href=\"" + downloadUrl + "\">Download this file</a><br>");

    DatanodeInfo chosenNode;
    // URL for TAIL
    LocatedBlock lastBlk = blocks.get(blocks.size() - 1);
    try {
        chosenNode = JspHelper.bestNode(lastBlk, conf);
    } catch (IOException e) {
        out.print(e.toString());
        dfs.close();
        return;
    }

    String tailUrl = "///" + JspHelper.Url.authority(req.getScheme(), chosenNode) + "/tail.jsp?filename="
            + URLEncoder.encode(filename, "UTF-8") + "&namenodeInfoPort=" + namenodeInfoPort
            + "&chunkSizeToView=" + chunkSizeToView + JspHelper.getDelegationTokenUrlParam(tokenString)
            + JspHelper.getUrlParam(JspHelper.NAMENODE_ADDRESS, nnAddr) + "&referrer="
            + URLEncoder.encode(req.getRequestURL() + "?" + req.getQueryString(), "UTF-8");
    out.print("<a href=\"" + tailUrl + "\">Tail this file</a><br>");

    out.print("<form action=\"/browseBlock.jsp\" method=GET>");
    out.print("<b>Chunk size to view (in bytes, up to file's DFS block size): </b>");
    out.print("<input type=\"hidden\" name=\"blockId\" value=\"" + blockId + "\">");
    out.print("<input type=\"hidden\" name=\"blockSize\" value=\"" + blockSize + "\">");
    out.print("<input type=\"hidden\" name=\"startOffset\" value=\"" + startOffset + "\">");
    out.print("<input type=\"hidden\" name=\"filename\" value=\"" + filename + "\">");
    out.print("<input type=\"hidden\" name=\"genstamp\" value=\"" + genStamp + "\">");
    out.print("<input type=\"hidden\" name=\"datanodePort\" value=\"" + datanodePort + "\">");
    out.print("<input type=\"hidden\" name=\"namenodeInfoPort\" value=\"" + namenodeInfoPort + "\">");
    out.print("<input type=\"hidden\" name=\"" + JspHelper.NAMENODE_ADDRESS + "\" value=\"" + nnAddr + "\">");
    out.print("<input type=\"text\" name=\"chunkSizeToView\" value=" + chunkSizeToView
            + " size=10 maxlength=10>");
    out.print("&nbsp;&nbsp;<input type=\"submit\" name=\"submit\" value=\"Refresh\">");
    out.print("</form>");
    out.print("<hr>");
    out.print("<a name=\"blockDetails\"></a>");
    out.print("<B>Total number of blocks: " + blocks.size() + "</B><br>");
    // generate a table and dump the info
    out.println("\n<table>");

    String nnCanonicalName = JspHelper.canonicalize(nnAddr);
    for (LocatedBlock cur : blocks) {
        out.print("<tr>");
        final String blockidstring = Long.toString(cur.getBlock().getBlockId());
        blockSize = cur.getBlock().getNumBytes();
        out.print("<td>" + blockidstring + ":</td>");
        DatanodeInfo[] locs = cur.getLocations();
        for (int j = 0; j < locs.length; j++) {
            String datanodeAddr = locs[j].getXferAddr();
            datanodePort = locs[j].getXferPort();
            String blockUrl = "///" + JspHelper.Url.authority(req.getScheme(), locs[j])
                    + "/browseBlock.jsp?blockId=" + blockidstring + "&blockSize=" + blockSize + "&filename="
                    + URLEncoder.encode(filename, "UTF-8") + "&datanodePort=" + datanodePort + "&genstamp="
                    + cur.getBlock().getGenerationStamp() + "&namenodeInfoPort=" + namenodeInfoPort
                    + "&chunkSizeToView=" + chunkSizeToView + JspHelper.getDelegationTokenUrlParam(tokenString)
                    + JspHelper.getUrlParam(JspHelper.NAMENODE_ADDRESS, nnAddr);

            String blockInfoUrl = "///" + nnCanonicalName + ":" + namenodeInfoPort
                    + "/block_info_xml.jsp?blockId=" + blockidstring;
            out.print("<td>&nbsp</td><td><a href=\"" + blockUrl + "\">" + datanodeAddr + "</a></td><td>"
                    + "<a href=\"" + blockInfoUrl + "\">View Block Info</a></td>");
        }
        out.println("</tr>");
    }
    out.println("</table>");
    out.print("<hr>");
    out.print("<br><a href=\"///" + nnCanonicalName + ":" + namenodeInfoPort
            + "/dfshealth.jsp\">Go back to DFS home</a>");
    dfs.close();
}

---

From source file:org.openmrs.web.taglib.UserWidgetTag.java

public int doStartTag() {
    User user = Context.getUserService().getUser(userId);

    try {/*from   w w  w.  j a va  2 s  .  c  om*/
        JspWriter w = pageContext.getOut();
        w.print(user.getPersonName());
        if ("full".equals(size)) {
            w.print(" <i>(" + user.getUsername() + ")</i>");
        }
    } catch (IOException ex) {
        log.error("Error while starting userWidget tag", ex);
    }
    return SKIP_BODY;
}

---

From source file:com.edgenius.wiki.webapp.taglib.SystemTitleTag.java

@Override
public int doStartTag() throws JspException {
    JspWriter writer = pageContext.getOut();
    try {/* www .  j  a  v a 2 s. c  o m*/
        writer.print((StringUtils.isBlank(Global.SystemTitle) ? "" : Global.SystemTitle + "|")
                + WikiConstants.APP_NAME);
    } catch (IOException e) {
        log.error("Write system title failed.", e);
    }
    return TagSupport.SKIP_BODY;
}

---

From source file:org.apache.hadoop.hdfs.server.datanode.DatanodeJspHelper.java

static void generateFileChunks(JspWriter out, HttpServletRequest req, Configuration conf)
        throws IOException, InterruptedException {
    long startOffset = 0;
    int datanodePort = 0;

    final String namenodeInfoPortStr = req.getParameter("namenodeInfoPort");
    final String nnAddr = req.getParameter(JspHelper.NAMENODE_ADDRESS);
    if (nnAddr == null) {
        out.print(JspHelper.NAMENODE_ADDRESS + " url param is null");
        return;//from  ww w . j  av  a 2 s.c  o m
    }
    final String tokenString = req.getParameter(JspHelper.DELEGATION_PARAMETER_NAME);
    UserGroupInformation ugi = JspHelper.getUGI(req, conf);
    int namenodeInfoPort = -1;
    if (namenodeInfoPortStr != null)
        namenodeInfoPort = Integer.parseInt(namenodeInfoPortStr);

    final String filename = JspHelper
            .validatePath(StringEscapeUtils.unescapeHtml(req.getParameter("filename")));
    if (filename == null) {
        out.print("Invalid input (filename absent)");
        return;
    }

    final Long blockId = JspHelper.validateLong(req.getParameter("blockId"));
    if (blockId == null) {
        out.print("Invalid input (blockId absent)");
        return;
    }

    final DFSClient dfs = getDFSClient(ugi, nnAddr, conf);

    String bpid = null;
    Token<BlockTokenIdentifier> blockToken = BlockTokenSecretManager.DUMMY_TOKEN;
    List<LocatedBlock> blks = dfs.getNamenode().getBlockLocations(filename, 0, Long.MAX_VALUE)
            .getLocatedBlocks();
    if (blks == null || blks.size() == 0) {
        out.print("Can't locate file blocks");
        dfs.close();
        return;
    }

    boolean needBlockToken = conf.getBoolean(DFSConfigKeys.DFS_BLOCK_ACCESS_TOKEN_ENABLE_KEY,
            DFSConfigKeys.DFS_BLOCK_ACCESS_TOKEN_ENABLE_DEFAULT);

    for (int i = 0; i < blks.size(); i++) {
        if (blks.get(i).getBlock().getBlockId() == blockId) {
            bpid = blks.get(i).getBlock().getBlockPoolId();
            if (needBlockToken) {
                blockToken = blks.get(i).getBlockToken();
            }
            break;
        }
    }

    final Long genStamp = JspHelper.validateLong(req.getParameter("genstamp"));
    if (genStamp == null) {
        out.print("Invalid input (genstamp absent)");
        return;
    }

    long blockSize = 0;
    final String blockSizeStr = req.getParameter("blockSize");
    if (blockSizeStr == null) {
        out.print("Invalid input (blockSize absent)");
        return;
    }
    blockSize = Long.parseLong(blockSizeStr);

    final int chunkSizeToView = JspHelper.string2ChunkSizeToView(req.getParameter("chunkSizeToView"),
            getDefaultChunkSize(conf));

    String startOffsetStr = req.getParameter("startOffset");
    if (startOffsetStr == null || Long.parseLong(startOffsetStr) < 0)
        startOffset = 0;
    else
        startOffset = Long.parseLong(startOffsetStr);

    String datanodePortStr = req.getParameter("datanodePort");
    if (datanodePortStr == null) {
        out.print("Invalid input (datanodePort absent)");
        return;
    }
    datanodePort = Integer.parseInt(datanodePortStr);
    out.print("<h3>File: ");
    JspHelper.printPathWithLinks(filename, out, namenodeInfoPort, tokenString, nnAddr);
    out.print("</h3><hr>");
    String parent = new File(filename).getParent();
    JspHelper.printGotoForm(out, namenodeInfoPort, tokenString, parent, nnAddr);
    out.print("<hr>");
    out.print("<a href=\"/browseDirectory.jsp?dir=" + URLEncoder.encode(parent, "UTF-8") + "&namenodeInfoPort="
            + namenodeInfoPort + JspHelper.getDelegationTokenUrlParam(tokenString)
            + JspHelper.getUrlParam(JspHelper.NAMENODE_ADDRESS, nnAddr)
            + "\"><i>Go back to dir listing</i></a><br>");
    out.print("<a href=\"#viewOptions\">Advanced view/download options</a><br>");
    out.print("<hr>");

    String authority = req.getServerName() + ":" + req.getServerPort();
    String nextUrl = generateLinksForAdjacentBlock(NEXT_BLOCK, authority, datanodePort, startOffset,
            chunkSizeToView, blockSize, blockId, genStamp, dfs, filename, conf, req.getScheme(), tokenString,
            namenodeInfoPort, nnAddr);
    if (nextUrl != null) {
        out.print("<a href=\"" + nextUrl + "\">View Next chunk</a>&nbsp;&nbsp;");
    }

    String prevUrl = generateLinksForAdjacentBlock(PREV_BLOCK, authority, datanodePort, startOffset,
            chunkSizeToView, blockSize, blockId, genStamp, dfs, filename, conf, req.getScheme(), tokenString,
            namenodeInfoPort, nnAddr);
    if (prevUrl != null) {
        out.print("<a href=\"" + prevUrl + "\">View Prev chunk</a>&nbsp;&nbsp;");
    }

    out.print("<hr>");
    out.print("<textarea cols=\"100\" rows=\"25\" wrap=\"virtual\" style=\"width:100%\" READONLY>");
    try {
        JspHelper.streamBlockInAscii(new InetSocketAddress(req.getServerName(), datanodePort), bpid, blockId,
                blockToken, genStamp, blockSize, startOffset, chunkSizeToView, out, conf, dfs.getConf(), dfs,
                getSaslDataTransferClient(req));
    } catch (Exception e) {
        out.print(e);
    }
    out.print("</textarea>");
    dfs.close();
}

---

From source file:cn.vlabs.umt.ui.tags.ConfigTag.java

public int doStartTag() {
    JspWriter out = this.pageContext.getOut();
    try {/*from w w  w. j  a  v a 2 s. co  m*/
        out.print(getConfig().getStringProp(key, ""));
    } catch (IOException e) {
        LOGGER.error(e.getMessage(), e);
    }
    return SKIP_BODY;
}

---

From source file:ams.fwk.customtag.AmsExcelExportTag.java

/**
 * @return int/*from  w  w  w . j av a2s.co m*/
 * @throws JspException
 */
public int doEndTag() throws JspException {
    try {
        JspWriter out = pageContext.getOut();
        out.print(listOpen);
        StringBuffer sb = new StringBuffer();
        sb.append(StringUtils.replace(excelTxTag, "$transactionId$", transactionId));
        sb.append(excelResTag);
        sb.append(StringUtils.replace(exportFileInfoTag, "$exportFileName$", exportFileName));

        out.print(sb.toString());

        out.print(listClose);

        return EVAL_PAGE;
    } catch (IOException e) {
        throw new JspException(e);
    } finally {

    }
}

---

From source file:dk.netarkivet.archive.webinterface.BatchGUI.java

/**
 * Method for creating the page for a batchjob. It contains the following informations:
 * <p>//from  w ww.  j av a2  s.  c  om
 * <br/>
 * - Creates a line with the name of the batchjob.<br/>
 * - Write the description if the batchjob has a metadata resource annotation description of the batchjob class.<br/>
 * - The last run information, date and size of the error and output files. <br/>
 * - The arguments of the batchjob, with information if they have been defined in the resource annotations of the
 * class.<br/>
 * - Radio buttons for choosing the replica.<br/>
 * - Input box for regular expression for filenames to match.<br/>
 * - Execution button.<br/>
 *
 * @param context The context of the page. Must contains a class name of the batchjob.
 * @throws UnknownID If the class cannot be found.
 * @throws ArgumentNotValid If the context is null.
 * @throws IllegalState If the class is not an instance of FileBatchJob.
 * @throws ForwardedToErrorPage If the context does not contain the required information.
 * @throws IOFailure If there is problems with the JspWriter.
 */
@SuppressWarnings("rawtypes")
public static void getPageForClass(PageContext context)
        throws UnknownID, ArgumentNotValid, IllegalState, ForwardedToErrorPage, IOFailure {
    ArgumentNotValid.checkNotNull(context, "PageContext context");

    HTMLUtils.forwardOnEmptyParameter(context, Constants.BATCHJOB_PARAMETER);

    try {
        // Retrieve variables
        Locale locale = context.getResponse().getLocale();
        ServletRequest request = context.getRequest();
        String className = request.getParameter(Constants.BATCHJOB_PARAMETER);
        JspWriter out = context.getOut();

        // retrieve the batch class and the constructor.
        Class c = getBatchClass(className);

        out.print(I18N.getString(locale, "batchpage;Name.of.batchjob", new Object[] {}) + ": <b>" + c.getName()
                + "</b><br/>\n");
        out.print(getClassDescription(c, locale));
        out.print(getPreviousRuns(c.getName(), locale));

        // begin form
        out.println("<form method=\"post\" action=\"" + Constants.URL_BATCHJOB_EXECUTE + "?"
                + Constants.BATCHJOB_PARAMETER + "=" + className + "\">");

        out.print(getHTMLarguments(c, locale));
        out.print(getReplicaRadioButtons(locale));
        out.print(getRegularExpressionInputBox(locale));
        out.print(getSubmitButton(locale));

        // end form
        out.print("</form>");
    } catch (IOException e) {
        String errMsg = "Could not create page with batchjobs.";
        log.warn(errMsg, e);
        throw new IOFailure(errMsg, e);
    }
}

---

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