Java encrypted PDF Set Password and add watermark

/**
* Project name:xxx
* File Name:EncryptLogFile.java
* Date:2016-6-12 11:56:38
* Copyright (c), all rights Reserved.
*
*/

Package com.xxx. Xxx.utils;

Import Java.io.BufferedReader;
Import Java.io.File;
Import Java.io.FileOutputStream;
Import Java.io.FileReader;
Import java.io.IOException;

Import com.lowagie.text.Document;
Import com.lowagie.text.DocumentException;
Import Com.lowagie.text.Font;
Import Com.lowagie.text.HeaderFooter;
Import com.lowagie.text.PageSize;
Import Com.lowagie.text.Paragraph;
Import Com.lowagie.text.Phrase;
Import Com.lowagie.text.Rectangle;
Import Com.lowagie.text.pdf.BaseFont;
Import Com.lowagie.text.pdf.PdfReader;
Import Com.lowagie.text.pdf.PdfStamper;
Import Com.lowagie.text.pdf.PdfWriter;

/**
* Classname:encryptlogfile
* Function: Log document to PDF and add password and watermark. Date:2016-6-12
* 11:56:38
*
* @author Yang
* @version
*/
public class Encryptlogfile {
Generate temporary file prefixes
Private static final String prefix = "Tempfile";

Owner password
private static final String OwnerPassword = "12345678";

/**
* TXT file conversion to PDF file
*
* @param txtfile
* TXT file path
* @param pdffile
* PDF file path
* @param userpassword
* User Password
* @param watermarkname
* Watermark Content
* @param permission
* Operation permissions
*/
public static void Generatepdfwithtxt (String txtfile, String pdffile,
String UserPassword, string watermarkname, int permission) {
try {
Generate Temporary files
File File = file.createtempfile (prefix, ". pdf");
Create a PDF file to a temporary file
if (Createpdffile (txtfile, file)) {
Add watermarks and encryption
WaterMark (File.getpath (), Pdffile, UserPassword, OwnerPassword,
Watermarkname, permission);
}
} catch (Exception e) {
E.printstacktrace ();
}
}

/**
* Create PDF document
*
* @param Txtfilepath
* TXT file path (source file)
* @param Pdffilepath
* PDF file path (new file)
*/
private static Boolean Createpdffile (String txtfilepath, file file) {
Set up paper
Rectangle rect = new Rectangle (PAGESIZE.A4);
Set Page numbers
HeaderFooter footer = new HeaderFooter (New Phrase ("page number:",
Setchinesefont ()), true);
Footer.setborder (Rectangle.no_border);

Step1
Document doc = new document (Rect, 50, 50, 50, 50);
Doc.setfooter (footer);
try {
FileReader fileRead = new FileReader (Txtfilepath);
BufferedReader read = new BufferedReader (fileRead);
Set PDF file Generation path Step2
Pdfwriter.getinstance (Doc, new FileOutputStream (file));
Open PDF File Step3
Doc.open ();
Instantiate paragraph gets the content written to the PDF file, calling a method that supports Chinese. Step4
while (Read.ready ()) {
Add content to PDF (this will be output according to the original style of the TXT file)
Doc.add (New Paragraph (Read.readline (), Encryptlogfile.setchinesefont ()));
}
Close PDF File Step5
Doc.close ();
return true;
} catch (Exception e) {
E.printstacktrace ();
return false;
}
}

/**
* in PDF encryption
*
* @param inputfile
* Original File
* @param outputFile
* Watermark Output file
* @param watermarkname
* Watermark Name
*/
private static void WaterMark (String inputfile, String outputFile,
String UserPassword, String OwnerPassword, String watermarkname,
int permission) {
try {
Pdfreader reader = new Pdfreader (inputfile);
Pdfstamper stamper = new Pdfstamper (reader, New FileOutputStream (
OutputFile));
Set Password
Stamper.setencryption (Userpassword.getbytes (),
Ownerpassword.getbytes (), permission, false);
Stamper.close ();
} catch (Exception e) {
E.printstacktrace ();
}
}

/**
* Set Chinese
*
* @return Font
*/
private static Font Setchinesefont () {
Basefont base = null;
Font Fontchinese = null;
try {
Base = Basefont.createfont ("Stsong-light", "Unigb-ucs2-h",
basefont.embedded);
Fontchinese = new Font (base, Font.normal);
} catch (Documentexception e) {
E.printstacktrace ();
} catch (IOException e) {
E.printstacktrace ();
}
return Fontchinese;
}
}
Portal: Encrypt the required jar package

Java encrypted PDF Set Password and add watermark