pdf from blob data problem

I am working on pdf exporting. as part of that I need to export the blob data to pdf.but the problem is I have retrived the blob data
to pdf,but some part of data not appearing.I think size of page is lesser than blob data.please suggest me how to over come this problem.
I attaching code and print sccreen of result pdf

Thanks in advance
Regards,
Trivendra

package ims.quality.imsDocumentation;

import ims.UserConnection;
import ims.admin.CompBean;

import [surl='http://docs.oracle.com/javase/7/docs/api/java/awt/Color.html' class='api' title='Java API']java.awt.Color[/surl];
import [surl='http://docs.oracle.com/javase/7/docs/api/java/awt/geom/AffineTransform.html' class='api' title='Java API']java.awt.geom.AffineTransform[/surl];
import [surl='http://docs.oracle.com/javase/7/docs/api/java/io/BufferedReader.html' class='api' title='Java API']java.io.BufferedReader[/surl];
import [surl='http://docs.oracle.com/javase/7/docs/api/java/io/BufferedWriter.html' class='api' title='Java API']java.io.BufferedWriter[/surl];
import [surl='http://docs.oracle.com/javase/7/docs/api/java/io/ByteArrayOutputStream.html' class='api' title='Java API']java.io.ByteArrayOutputStream[/surl];
import [surl='http://docs.oracle.com/javase/7/docs/api/java/io/File.html' class='api' title='Java API']java.io.File[/surl];
import [surl='http://docs.oracle.com/javase/7/docs/api/java/io/FileOutputStream.html' class='api' title='Java API']java.io.FileOutputStream[/surl];
import [surl='http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html' class='api' title='Java API']java.io.IOException[/surl];
import [surl='http://docs.oracle.com/javase/7/docs/api/java/io/InputStream.html' class='api' title='Java API']java.io.InputStream[/surl];
import [surl='http://docs.oracle.com/javase/7/docs/api/java/io/OutputStream.html' class='api' title='Java API']java.io.OutputStream[/surl];
import [surl='http://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html' class='api' title='Java API']java.sql.Connection[/surl];
import [surl='http://docs.oracle.com/javase/7/docs/api/java/sql/PreparedStatement.html' class='api' title='Java API']java.sql.PreparedStatement[/surl];
import [surl='http://docs.oracle.com/javase/7/docs/api/java/sql/ResultSet.html' class='api' title='Java API']java.sql.ResultSet[/surl];
import [surl='http://docs.oracle.com/javase/7/docs/api/java/sql/SQLException.html' class='api' title='Java API']java.sql.SQLException[/surl];

import [surl='http://docs.oracle.com/javaee/6/api/javax/servlet/ServletContext.html' class='api' title='Java API']javax.servlet.ServletContext[/surl];
import [surl='http://docs.oracle.com/javaee/6/api/javax/servlet/http/HttpServletRequest.html' class='api' title='Java API']javax.servlet.http.HttpServletRequest[/surl];

import com.lowagie.text.Chunk;
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Element;
import com.lowagie.text.ExceptionConverter;
import com.lowagie.text.Font;
import com.lowagie.text.PageSize;
import com.lowagie.text.Paragraph;
import com.lowagie.text.Phrase;
import com.lowagie.text.pdf.BaseFont;
import com.lowagie.text.pdf.PdfArray;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfDictionary;
import com.lowagie.text.pdf.PdfGState;
import com.lowagie.text.pdf.PdfImportedPage;
import com.lowagie.text.pdf.PdfName;
import com.lowagie.text.pdf.PdfNumber;
import com.lowagie.text.pdf.PdfPCell;
import com.lowagie.text.pdf.PdfPTable;
import com.lowagie.text.pdf.PdfPageEventHelper;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfRectangle;
import com.lowagie.text.pdf.PdfStamper;
import com.lowagie.text.pdf.PdfWriter;

public class PDFGenHeaderFooter extends PdfPageEventHelper {

/** The headertable. */
	public PdfPTable headerTable;

/** The footertable. */
	public PdfPTable footerTable;

/** The Graphic state */
	public PdfGState gstate;

static int maxPageNumber;

static [surl='http://www.coderanch.com/t/410859/java/java/String-StringBuffer-StringBuilder-Performance' class='api' title='String vs. StringBuilder/StringBuffer']String[/surl] companyName, documentRefNo, documentTitle, documentIssueNo,
			documentEffectiveDate, documentBasePath, documentStatus;

public static void PDFGen(final [surl='http://docs.oracle.com/javaee/6/api/javax/servlet/http/HttpServletRequest.html' class='api' title='Java API']HttpServletRequest[/surl] req,
			final [surl='http://docs.oracle.com/javaee/6/api/javax/servlet/ServletContext.html' class='api' title='Java API']ServletContext[/surl] ctx, String docid, String docstatus) {
		try {

DocumentBean DocBean = new DocumentBean();
			CompBean Compbean = new CompBean();
			ims.quality.imsDocumentation.DocumentModel docData = null;
			DocBean.loadDocDtls("", "", "", "", "", "", "", docid, "S", "", "",
					"");
			docData = DocBean.getDocData();
			Compbean.loadCompany();
			companyName = Compbean.getCompName()[0] + ", "
					+ Compbean.getCompadd2()[0];
			documentRefNo = docData.getDocRefNo()[0];
			documentTitle = docData.getDocTitle()[0];
			documentIssueNo = docData.getDocIssuNo()[0];
			if (docData.getDocEffectiveDate()[0] != null
					&& !docData.getDocEffectiveDate()[0]
							.equalsIgnoreCase("null"))
				documentEffectiveDate = docData.getDocEffectiveDate()[0];
			else
				documentEffectiveDate = "";
			documentStatus = docstatus;
			documentBasePath = "http://" + req.getServerName() + ":"
					+ req.getServerPort() + "/qms";
			String path = req.getRealPath("");
			String fname = "", fileType = "";
			UserConnection conn = new UserConnection();
			Connection con = conn.getConnection();
			[surl='http://docs.oracle.com/javase/7/docs/api/java/sql/ResultSet.html' class='api' title='Java API']ResultSet[/surl] rs = null;
			[surl='http://docs.oracle.com/javase/7/docs/api/java/sql/PreparedStatement.html' class='api' title='Java API']PreparedStatement[/surl] pstab = null;
			pstab = con
					.prepareStatement("select DOCFILE,DOCFILENAME from docfiledtls where docid=?");
			pstab.setInt(1, Integer.parseInt(docid));
			rs = pstab.executeQuery();
			byte[] bytes = null;
			[surl='http://docs.oracle.com/javase/7/docs/api/java/io/ByteArrayOutputStream.html' class='api' title='Java API']ByteArrayOutputStream[/surl] bb = new [surl='http://docs.oracle.com/javase/7/docs/api/java/io/ByteArrayOutputStream.html' class='api' title='Java API']ByteArrayOutputStream[/surl]();
			[surl='http://docs.oracle.com/javase/7/docs/api/java/io/InputStream.html' class='api' title='Java API']InputStream[/surl] instream = null;
			String strLine = "";
			oracle.sql.BLOB blob = null;
			if (rs.next()) {
				//instream = rs.getBinaryStream("DOCFILE");
				blob = ((oracle.jdbc.driver.OracleResultSet) rs).getBLOB(1);
				//bytes = blob.getBytes(1, (int) blob.length());
			}

instream = blob.getBinaryStream();
			File file = new File(path + "\\loaddoc\\temp1.pdf");
			file.getPath();
			PdfImportedPage page;
			PdfDictionary pageDict;
			PdfReader reader = new PdfReader(instream);
			Document document = new Document(reader.getPageSizeWithRotation(1));
			PdfWriter writer = PdfWriter.getInstance(document,
					new [surl='http://docs.oracle.com/javase/7/docs/api/java/io/FileOutputStream.html' class='api' title='Java API']FileOutputStream[/surl](file));
			writer.setViewerPreferences(PdfWriter.PageLayoutTwoColumnLeft);
			document.setMargins(0, 0, 0, 0);
			document.open();
			PdfContentByte cb = writer.getDirectContent();
			int n = reader.getNumberOfPages();
			
			for (int i = 1; i <= n; i++) {
				int rotation = reader.getPageRotation(i);
				//System.out.println("page rotation:////////"+rotation+"
				// Degrees");
				if (rotation == 90) {
					System.out.println("page rotation:////////" + rotation
							+ " Degrees");
					float rotate1 = 180;
					float angle = (float) (-rotate1 * (Math.PI / 180));
					float xScale = (float) Math.cos(angle);
					float yScale = (float) Math.cos(angle);
					float xRot = (float) -Math.sin(angle);
					float yRot = (float) Math.sin(angle);
					document.newPage();
					page = writer.getImportedPage(reader, i);
					cb.addTemplate(page, xScale, xRot, yRot, yScale, 590, 620);
				} else {
					document.newPage();
					page = writer.getImportedPage(reader, i);

/*
					 * cb.rectangle(0, 52, 612, 668); cb.clip(); cb.newPath();
					 * cb.rectangle(0, 72, 762, 718); cb.clip(); cb.newPath();
					 */

cb.addTemplate(page, 0, 0);
					/*
					 * pageDict = reader.getPageN(i); PdfArray crop = new
					 * PdfRectangle(0, 52, 612, 720);
					 * pageDict.put(PdfName.CROPBOX, crop);
					 */
				}
			}
			document.close();
			File file1 = new File(path + "\\loaddoc\\temp2.pdf");
			addHeaderFooter(file1);

} catch ([surl='http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html' class='api' title='Java API']IOException[/surl] e) {
			e.printStackTrace();
		} catch (DocumentException e) {
			e.printStackTrace();
		} catch ([surl='http://docs.oracle.com/javase/7/docs/api/java/sql/SQLException.html' class='api' title='Java API']SQLException[/surl] e) {
			e.printStackTrace();
		}
	}

public static void addHeaderFooter(File file) {
		try {
			PdfImportedPage page;
			PdfDictionary pageDict;
			PdfReader reader = new PdfReader(documentBasePath
					+ "/loaddoc/temp1.pdf");
			Document document = new Document(reader.getPageSizeWithRotation(1));
			PdfWriter writer = PdfWriter.getInstance(document,
					new [surl='http://docs.oracle.com/javase/7/docs/api/java/io/FileOutputStream.html' class='api' title='Java API']FileOutputStream[/surl](file));
			writer.setPageEvent(new PDFGenHeaderFooter());
			document.open();
			PdfContentByte cb = writer.getDirectContent();
			int n = reader.getNumberOfPages();

maxPageNumber = n;
			System.out.println(maxPageNumber + " setMaxPageNumber 1 " + n);
			for (int i = 1; i <= n; i++) {
				document.newPage();
				page = writer.getImportedPage(reader, i);
				cb.addTemplate(page, 0, 0);
				pageDict = reader.getPageN(i);
			}
			document.close();

} catch ([surl='http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html' class='api' title='Java API']IOException[/surl] e) {
			e.printStackTrace();
		} catch (DocumentException e) {
			e.printStackTrace();
		}
	}

/**
	 * @see com.lowagie.text.pdf.PdfPageEventHelper#onOpenDocument(com.lowagie.text.pdf.PdfWriter,
	 *      com.lowagie.text.Document)
	 */
	public void onOpenDocument(PdfWriter writer, Document document) {
		try {
			// initialization of the header headerTable
			headerTable = new PdfPTable(2);
			headerTable.setHeaderRows(2);
			Phrase p = new Phrase();
			Chunk ck = new Chunk("" + companyName + "\n", new Font(
					Font.TIMES_ROMAN, 10, Font.BOLD, Color.black));
			p.add(ck);
			headerTable.addCell(p);
			p = new Phrase();
			ck = new Chunk("Ref No : " + documentRefNo + " ", new Font(
					Font.TIMES_ROMAN, 8, Font.NORMAL, Color.black));
			p.add(ck);
			headerTable.getDefaultCell().setHorizontalAlignment(
					Element.ALIGN_RIGHT);
			headerTable.addCell(p);

p = new Phrase();
			ck = new Chunk("Title : " + documentTitle + " ", new Font(
					Font.TIMES_ROMAN, 8, Font.NORMAL, Color.black));
			p.add(ck);
			headerTable.getDefaultCell().setHorizontalAlignment(
					Element.ALIGN_LEFT);
			headerTable.addCell(p);

p = new Phrase();
			ck = new Chunk("Issue No : " + documentIssueNo + " ", new Font(
					Font.TIMES_ROMAN, 8, Font.NORMAL, Color.black));
			p.add(ck);
			headerTable.getDefaultCell().setHorizontalAlignment(
					Element.ALIGN_RIGHT);
			headerTable.addCell(p);

// initialization of the Graphic State
			gstate = new PdfGState();
			gstate.setFillOpacity(0.2f);
			gstate.setStrokeOpacity(0.2f);

} catch (Exception e) {
			throw new ExceptionConverter(e);
		}
	}

/**
	 * @see com.lowagie.text.pdf.PdfPageEventHelper#onEndPage(com.lowagie.text.pdf.PdfWriter,
	 *      com.lowagie.text.Document)
	 */
	public void onEndPage(PdfWriter writer, Document document) {
		try {
			PdfContentByte cb = writer.getDirectContent();
			cb.saveState();
			// write the headertable
			headerTable.setTotalWidth(document.right() - document.left());
			headerTable.writeSelectedRows(0, -1, document.left(), document
					.getPageSize().getHeight() - 30, cb);

// initialization of the footer footerTable
			footerTable = new PdfPTable(2);
			footerTable.setHeaderRows(2);
			Phrase p = new Phrase();
			Chunk ck = new Chunk("Effective Date : " + documentEffectiveDate
					+ " ", new Font(Font.TIMES_ROMAN, 8, Font.NORMAL,
					Color.black));
			p.add(ck);
			footerTable.addCell(p);

p = new Phrase();
			ck = new Chunk("Page " + writer.getPageNumber() + " of "
					+ maxPageNumber + " ", new Font(Font.TIMES_ROMAN, 8,
					Font.NORMAL, Color.black));
			p.add(ck);
			footerTable.getDefaultCell().setHorizontalAlignment(
					Element.ALIGN_RIGHT);
			footerTable.addCell(p);

p = new Phrase();
			ck = new Chunk("Retention Period : Until Next Revision ", new Font(
					Font.TIMES_ROMAN, 8, Font.NORMAL, Color.black));
			p.add(ck);
			footerTable.getDefaultCell().setHorizontalAlignment(
					Element.ALIGN_LEFT);
			footerTable.addCell(p);

p = new Phrase();
			ck = new Chunk(" ", new Font(Font.TIMES_ROMAN, 8, Font.NORMAL,
					Color.black));
			p.add(ck);
			footerTable.getDefaultCell().setHorizontalAlignment(
					Element.ALIGN_RIGHT);
			footerTable.addCell(p);

//      write the footerTable
			footerTable.setTotalWidth(document.right() - document.left());
			footerTable.writeSelectedRows(0, -1, document.left(), 52, cb);
			cb.saveState();

// draw a Rectangle around the page
			cb.setColorStroke(Color.black);
			cb.setLineWidth(1);
			cb.rectangle(20, 20, document.getPageSize().getWidth() - 40,
					document.getPageSize().getHeight() - 40);
			cb.stroke();
			cb.restoreState();

// starting on page 3, a watermark with an Image that is made
			// transparent
			if (writer.getPageNumber() >= 0) {
				cb.setGState(gstate);
				if (documentStatus != null
						&& !documentStatus.equalsIgnoreCase("null")
						&& !documentStatus.equalsIgnoreCase("")
						&& documentStatus.equalsIgnoreCase("controlled"))
					cb.setColorFill(Color.green);
				else
					cb.setColorFill(Color.red);
				cb.beginText();
				cb.setFontAndSize(BaseFont.createFont("Helvetica",
						BaseFont.WINANSI, false), 48);
				cb.showTextAligned(Element.ALIGN_CENTER, " " + documentStatus
						+ " ", document.getPageSize().getWidth() / 2, document
						.getPageSize().getHeight() / 2, 45);
				cb.endText();
				cb.restoreState();
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

/**
	 * @see com.lowagie.text.pdf.PdfPageEventHelper#onStartPage(com.lowagie.text.pdf.PdfWriter,
	 *      com.lowagie.text.Document)
	 */
	public void onStartPage(PdfWriter writer, Document document) {

}

/**
	 * @see com.lowagie.text.pdf.PdfPageEventHelper#onCloseDocument(com.lowagie.text.pdf.PdfWriter,
	 *      com.lowagie.text.Document)
	 */
	public void onCloseDocument(PdfWriter writer, Document document) {

}

/**
	 * @return
	 */
	public String getCompanyName() {
		return companyName;
	}

/**
	 * @return
	 */
	public String getDocumentEffectiveDate() {
		return documentEffectiveDate;
	}

/**
	 * @return
	 */
	public String getDocumentIssueNo() {
		return documentIssueNo;
	}

/**
	 * @return
	 */
	public String getDocumentRefNo() {
		return documentRefNo;
	}

/**
	 * @return
	 */
	public String getDocumentTitle() {
		return documentTitle;
	}

/**
	 * @return
	 */
	public int getMaxPageNumber() {
		return maxPageNumber;
	}

/**
	 * @param string
	 */
	public void setCompanyName(String string) {
		companyName = string;
	}

/**
	 * @param string
	 */
	public void setDocumentEffectiveDate(String string) {
		documentEffectiveDate = string;
	}

/**
	 * @param string
	 */
	public void setDocumentIssueNo(String string) {
		documentIssueNo = string;
	}

/**
	 * @param string
	 */
	public void setDocumentRefNo(String string) {
		documentRefNo = string;
	}

/**
	 * @param string
	 */
	public void setDocumentTitle(String string) {
		documentTitle = string;
	}

/**
	 * @param i
	 */
	public void setMaxPageNumber(int i) {
		maxPageNumber = i;
	}

}