Knowledgebase (2300)
Spire.PDF for Java is a PDF API that enables Java applications to read, write and save PDF documents without using Adobe Acrobat. Using this Java PDF component, developers and programmers can implement rich capabilities to create PDF files from scratch or process existing PDF documents entirely on Java applications (J2SE and J2EE).
Many rich features can be supported by Spire.PDF for Java, such as security settings, extracting text/images, merging/spliting PDF, drawing text/image/shape/barcode to the PDF, create/filling in form fields, adding/deleting layers, overlaying PDF, inserting text/image watermark, adding/updating/deleting bookmarks, adding tables, adding annotations, adding actions and compressing PDF document etc.
Barcodes are essential for automating data collection and processing. They can be used in a wide range of industries, from retail and manufacturing to healthcare and logistics. By adding barcodes to PDFs, you can create more dynamic and interactive documents that can be easily scanned and processed. In this article, you will learn how to add 1D barcodes or QR codes to PDF in Java using Spire.PDF for Java.
Install the Java Libraries
First of all, you need to download the Spire.PDF for Java and Spire.Barcode for Java libraries, and then add the corresponding JAR files as dependencies in your Java program. If you use Maven, you can easily import the JAR files in your application by adding the following codes to your project's pom.xml file.
<repositories>
<repository>
<id>com.e-iceblue</id>
<name>e-iceblue</name>
<url>https://repo.e-iceblue.com/nexus/content/groups/public/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>e-iceblue</groupId>
<artifactId>spire.pdf</artifactId>
<version>11.11.11</version>
</dependency>
</dependencies>
<repositories>
<repository>
<id>com.e-iceblue</id>
<name>e-iceblue</name>
<url>https://repo.e-iceblue.com/nexus/content/groups/public/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>e-iceblue</groupId>
<artifactId>spire.barcode</artifactId>
<version>5.2.0</version>
</dependency>
</dependencies>
Add Barcodes to PDF in Java
Spire.PDF for Java supports several 1D barcode types represented by different classes, such as PdfCodabarBarcode, PdfCode128ABarcode, PdfCode32Barcode, PdfCode39Barcode, PdfCode93Barcode.
Each class provides corresponding methods for setting the barcode text, size, color, etc. The following are the steps to draw the common Codabar, Code128 and Code39 barcodes at the specified locations on a PDF page.
- Create a PdfDocument object.
- Add a PDF page using PdfDocument.getPages().add() method.
- Create a PdfTextWidget object and draw text on the page using PdfTextWidget.draw() method.
- Create PdfCodabarBarcode, PdfCode128ABarcode, PdfCode39Barcode objects.
- Set the gap between the barcode and the displayed text using the setBarcodeToTextGapHeight() method of the corresponding classes.
- Sets the barcode text display location using the setTextDisplayLocation() method of the corresponding classes.
- Set the barcode text color using the setTextColor() method of the corresponding classes.
- Draw the barcodes at specified locations on the PDF page using the draw() method of the corresponding classes.
- Save the result PDF file using PdfDocument.saveToFile() method.
- Java
import com.spire.pdf.*;
import com.spire.pdf.barcode.*;
import com.spire.pdf.graphics.*;
import java.awt.*;
import java.awt.geom.Point2D;
public class DrawBarcode {
public static void main(String[] args) {
// Create a PDF document
PdfDocument pdf = new PdfDocument();
// Add a page
PdfPageBase page = pdf.getPages().add();
// Initialize y-coordinate
double y = 15;
// Create a true type font
PdfTrueTypeFont font= new PdfTrueTypeFont(new Font("Arial", Font.BOLD, 12));
// Draw text "Codebar:" on the page
PdfTextWidget text = new PdfTextWidget();
text.setFont(font);
text.setText("Codebar:");
PdfLayoutResult result = text.draw(page, 0, y);
y =(float)(result.getBounds().getY()+ result.getBounds().getHeight() + 2);
// Draw Codabar barcode on the page
PdfCodabarBarcode codebar= new PdfCodabarBarcode("00:12-3456/7890");
codebar.setBarcodeToTextGapHeight(1f);
codebar.setBarHeight(50f);
codebar.setTextDisplayLocation(TextLocation.Bottom);
PdfRGBColor blue = new PdfRGBColor(Color.blue);
codebar.setTextColor(blue);
Point2D.Float point = new Point2D.Float();
point.setLocation(0,y);
codebar.draw(page,point);
y = codebar.getBounds().getY()+ codebar.getBounds().getHeight() + 5;
// Draw text "Code128-A:" on the page
text.setText("Code128-A:");
result = text.draw(page, 0, y);
page = result.getPage();
y =result.getBounds().getY()+ result.getBounds().getHeight() + 2;
// Draw Code128-A barcode on the page
PdfCode128ABarcode code128 = new PdfCode128ABarcode("HELLO 00-123");
code128.setBarcodeToTextGapHeight(1f);
code128.setBarHeight(50f);
code128.setTextDisplayLocation(TextLocation.Bottom);
code128.setTextColor(blue);
point.setLocation(point.x,y);
code128.draw(page, point);
y =code128.getBounds().getY()+ code128.getBounds().getHeight() + 5;
// Draw text "Code39:" on the page
text.setText("Code39:");
result = text.draw(page, 0, y);
page = result.getPage();
y =result.getBounds().getY()+ result.getBounds().getHeight() + 2;
// Draw Code39 barcode on the page
PdfCode39Barcode code39 = new PdfCode39Barcode("16-273849");
code39.setBarcodeToTextGapHeight(1f);
code39.setBarHeight(50f);
code39.setTextDisplayLocation(TextLocation.Bottom);
code39.setTextColor(blue);
point.setLocation(point.x,y);
code39.draw(page, point);
// Save the document
pdf.saveToFile("DrawBarcode.pdf");
}
}
Add QR Codes to PDF in Java
To add 2D barcodes to a PDF file, the Spire.Barcode for Java library is required to generate QR code first, and then you can add the QR code image to the PDF file with the Spire.PDF for Java library. The following are the detailed steps.
- Create a PdfDocument object.
- Add a PDF page using PdfDocument.getPages().add() method.
- Create a BarcodeSettings object.
- Call the corresponding properties of the BarcodeSettings class to set the barcode type, data, error correction level and width, etc.
- Create a BarCodeGenerator object based on the settings.
- Generate QR code image using BarCodeGenerator.generateImage() method.
- Draw the QR code image at a specified location on the PDF page using PdfPageBase.getCanvas().drawImage() method.
- Save the result PDF file using PdfDocument.saveToFile() method.
- Java
import com.spire.pdf.*;
import com.spire.pdf.graphics.*;
import com.spire.barcode.*;
import java.awt.*;
import java.awt.image.BufferedImage;
public class DrawQRCode {
public static void main(String[] args) {
// Create a PDF document
PdfDocument pdf = new PdfDocument();
// Add a page
PdfPageBase page = pdf.getPages().add();
// Create a BarcodeSettings object
BarcodeSettings settings = new BarcodeSettings();
// Set the barcode type to QR Code
settings.setType(BarCodeType.QR_Code);
// Set the data of the QR code
settings.setData("ABC 123456789");
settings.setData2D("ABC 123456789");
// Set to show QR code text at the bottom
settings.setShowTextOnBottom(true);
// Set the width of the QR code
settings.setX(2);
// Set the error correction level of the QR code
settings.setQRCodeECL(QRCodeECL.M);
// Generate QR code image based on the settings
BarCodeGenerator barCodeGenerator = new BarCodeGenerator(settings);
BufferedImage QRimage = barCodeGenerator.generateImage();
// Initialize y-coordinate
double y = 30;
// Create a true type font
PdfTrueTypeFont font= new PdfTrueTypeFont(new Font("Arial", Font.BOLD, 12));
// Draw text on the PDF page
PdfTextWidget text = new PdfTextWidget();
text.setFont(font);
text.setText("QRcode:");
PdfLayoutResult result = text.draw(page, 0, y);
y =(float)(result.getBounds().getY()+ result.getBounds().getHeight() + 2);
// Draw text on the PDF page
PdfImage pdfImage = PdfImage.fromImage(QRimage);
page.getCanvas().drawImage(pdfImage, 0, y);
// Save the document
pdf.saveToFile("DrawQRCode.pdf");
}
}
Apply for a Temporary License
If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.
PostScript is a page description language that is an industry standard for outputting high-resolution text and graphics. From Version 6.11.2, Spire.Doc supports to convert doc/docx to a postscript file in both WinForm app and ASP.NET app. This article will demonstrate how to convert word to PostScript in C# and VB.NET.
Firstly, view the sample word document:
using Spire.Doc;
namespace Word
{
class Program
{
static void Main(string[] args)
{
Document doc = new Document();
doc.LoadFromFile("Sample.docx", FileFormat.Docx2010);
doc.SaveToFile("Result.ps", FileFormat.PostScript);
}
}
}
Imports Spire.Doc
Namespace Word
Class Program
Private Shared Sub Main(ByVal args As String())
Dim doc As Document = New Document()
doc.LoadFromFile("Sample.docx", FileFormat.Docx2010)
doc.SaveToFile("Result.ps", FileFormat.PostScript)
End Sub
End Class
End Namespace
Effective screenshot of the resulted PostScript file converted from .docx document:
