Hibernate one to one mapping usnig boot

Below sample code for hibernate one to one mapping:

https://github.com/Sushil21/HibernateOneToOneMapping


I have used lib lombok also in this project so must integrate lombok in Eclipse/STS:

https://projectlombok.org/setup/eclipse

Create Spring Boot Sample Project

You can download a running  sample of spring boot on below link:

https://github.com/Sushil21/SpringBootSample

Add Image Water Mark on Image in JAVA

Below code for add image water mark on image in java:

import java.awt.AlphaComposite;

import java.awt.Graphics2D;

import java.awt.image.BufferedImage;

import java.io.File;

import javax.imageio.ImageIO;

public class TestImage41im {

public static void main(String[] args) {

try {

File sourceImageFile = new File("originalImagePath/originalimage.jpg");

File destImageFile = new File("destinationImagePath/destinationImage.png");

File watermarkImageFile = new File("waterMarkImagePath/watermark.png");

BufferedImage sourceImage = ImageIO.read(sourceImageFile);

BufferedImage watermarkImage = ImageIO.read(watermarkImageFile);

// graphic properties

Graphics2D g2d = (Graphics2D) sourceImage.getGraphics();

AlphaComposite alphaChannel = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.3f); //add transparency of watermark image 

g2d.setComposite(alphaChannel);

//coordinate where the image is painted below are the center

int x = (sourceImage.getWidth() - watermarkImage.getWidth()) / 2;

int y = (sourceImage.getHeight() - watermarkImage.getHeight()) / 2;

// draw the image watermark

g2d.drawImage(watermarkImage, x, y, null);

ImageIO.write(sourceImage, "png", destImageFile);

g2d.dispose();

System.out.println("The image watermark is added to the image.");

}catch (Exception e) {

// TODO: handle exception

}

}

}

Add Text Water mark on Image in JAVA

Below code for add text water mark on image in JAVA:

import java.awt.AlphaComposite;

import java.awt.Color;

import java.awt.Font;

import java.awt.FontMetrics;

import java.awt.Graphics2D;

import java.awt.image.BufferedImage;

import java.io.File;

import javax.imageio.ImageIO;

import com.itextpdf.awt.geom.Dimension;

public class TextWaterMarkOnImage {

public static void main(String[] args) {

try {

File sourceImageFile = new File("originalFilePath/original.jpg");

File destImageFile = new File("watermarkedFilePath/watermarked.png");

BufferedImage sourceImage = ImageIO.read(sourceImageFile);

Graphics2D g2d = (Graphics2D) sourceImage.getGraphics();

AlphaComposite alphaChannel = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.3f); //set transparency of watermark

g2d.setComposite(alphaChannel);

g2d.setColor(Color.BLACK);

Font font = new Font("Arial", Font.BOLD, 64); //font of text

g2d.setFont(font);

String text = "Checked"; //watermark text

Dimension dmDimension = getDimentionOfText(g2d, font, text);

int centerX  = sourceImage.getWidth()/2 - (int)dmDimension.getWidth()/2;

int centerY = sourceImage.getHeight()/2 + (int)dmDimension.getHeight()/2;

// paints the textual watermark

g2d.drawString(text, centerX, centerY);

ImageIO.write(sourceImage, "png", destImageFile);

g2d.dispose();

System.out.println("The text watermark is added to the image.");

}catch (Exception e) {

// TODO: handle exception

}

}

public static Dimension getDimentionOfText(Graphics2D g2d, Font font , String text) {

// get metrics from the graphics

FontMetrics metrics = g2d.getFontMetrics(font);

// get the height of a line of text in this

// font and render context

int hgt = metrics.getHeight();

// get the advance of my text in this font

// and render context

int adv = metrics.stringWidth(text);

// calculate the size of a box to hold the

// text with some padding.

Dimension size = new Dimension(adv+2, hgt+2);

System.out.println(size.getHeight() +"  "+ size.getWidth());

return size;

}

}

Add image water mark on PDF in JAVA using iText

Below code for add image water mark on PDF using iText:

import java.io.FileOutputStream;

import java.io.IOException;

import com.itextpdf.text.DocumentException;

import com.itextpdf.text.Image;

import com.itextpdf.text.Rectangle;

import com.itextpdf.text.pdf.PdfContentByte;

import com.itextpdf.text.pdf.PdfGState;

import com.itextpdf.text.pdf.PdfReader;

import com.itextpdf.text.pdf.PdfStamper;

public class ImageWaterMarkOnPdf {

public static void main(String... args)   {

try {

PdfReader reader = new PdfReader("originalfilepath/otiginal.pdf");

PdfStamper stamper = new PdfStamper(reader,

new FileOutputStream("outputfilepath/output.pdf"));

// image watermark

Image img = Image.getInstance("watermarkfilepath/watermark.png");

float w = img.getScaledWidth();

float h = img.getScaledHeight();

// properties

PdfContentByte over;

Rectangle pagesize;

float x, y;

// add water mark on all pages

int n = reader.getNumberOfPages();

for (int i = 1; i <= n; i++) {

// get page size and position for add water mark

pagesize = reader.getPageSizeWithRotation(i);

x = (pagesize.getLeft() + pagesize.getRight()) / 2;

y = (pagesize.getTop() + pagesize.getBottom()) / 2;

over = stamper.getOverContent(i);

over.saveState();

// set transparency

PdfGState state = new PdfGState();

state.setFillOpacity(0.2f); //more transparent

over.setGState(state);

// add image water mark center

over.addImage(img, w, 0, 0, h, x - (w / 2), y - (h / 2));

over.restoreState();

}

stamper.close();

reader.close();

}catch (IOException e) {

// TODO: handle exception

}catch (DocumentException e) {

// TODO: handle exception

}

 

}

}

Get Bytes from ByteArrayOutputStream

Below code for get byte array from ByteArrayOutputStream:

byte[] waterMarkedBytes = baos.toByteArray();

PdfStamper from bytes

Below code of create PdfStamper object from Bytes in JAVA:

PdfReader reader = new PdfReader(bytes);

ByteArrayOutputStream baos = new ByteArrayOutputStream();

PdfStamper stamper = new PdfStamper(reader, baos);

How to read secured PDF using iText JAVA

Below code for read secured (encrypted using a public certificate ) PDF using iText:

PdfReader.unethicalreading = true;

ref: https://stackoverflow.com/questions/24462808/can-i-use-itext-to-merge-pdfs-with-permissions

Add Text Water Mark on PDF JAVA using iText

Sample Code:

Running code for add text water mark on PDF in java using iText , the water mark drawing on center horizontally.

import java.io.FileOutputStream;

import java.io.IOException;

import com.itextpdf.text.DocumentException;

import com.itextpdf.text.Element;

import com.itextpdf.text.Font;

import com.itextpdf.text.Phrase;

import com.itextpdf.text.Rectangle;

import com.itextpdf.text.pdf.ColumnText;

import com.itextpdf.text.pdf.GrayColor;

import com.itextpdf.text.pdf.PdfContentByte;

import com.itextpdf.text.pdf.PdfGState;

import com.itextpdf.text.pdf.PdfReader;

import com.itextpdf.text.pdf.PdfStamper;

public class TextWaterMarkOnPDF {

public static void main(String args[]) {

try {

PdfReader reader = new PdfReader("originalFilePath/file.pdf");

PdfStamper stamper = new PdfStamper(reader,

new FileOutputStream("outputPath/watermarked.pdf"));

// text watermark

Font FONT = new Font(Font.FontFamily.HELVETICA, 50, Font.BOLD, new             GrayColor(0.5f));

Phrase p = new Phrase("Checked", FONT);

// properties

PdfContentByte over;

Rectangle pagesize;

float x, y;

// add water on every page

int n = reader.getNumberOfPages();

for (int i = 1; i <= n; i++) {

// get page size and position

pagesize = reader.getPageSizeWithRotation(i);

x = (pagesize.getLeft() + pagesize.getRight()) / 2;

y = (pagesize.getTop() + pagesize.getBottom()) / 2;

over = stamper.getOverContent(i);

over.saveState();

// set transparency of watermark : if opacity less then it more transparent

PdfGState state = new PdfGState();

state.setFillOpacity(0.2f);

over.setGState(state);

// add watermark text in center horizontal

ColumnText.showTextAligned(over, Element.ALIGN_CENTER, p, x, y, 0);

over.restoreState();

}

stamper.close();

reader.close();

}catch (IOException e) {

// TODO: handle exception

}catch (DocumentException e) {

// TODO: handle exception

}

}}

Add watermark diagonally:
ColumnText.showTextAligned(over, Element.ALIGN_CENTER, p, x, y, 45);