escpos-coffee

Java library for ESC/POS printer commands. Can send text, images and barcodes to the printer. All commands are send to one OutputStream, then you can redirect to printer, file or network.

Getting Started

The EscPos works with OutputStream to send its commands. Here we have two examples that show different output streams.

Creating printer output stream:

  PrintService printService = PrinterOutputStream.getPrintServiceByName("printerName");
  PrinterOutputStream printerOutputStream = new PrinterOutputStream(printService);
  EscPos escpos = new EscPos(printerOutputStream);
  escpos.writeLF("Hello Wold");
  escpos.feed(5);
  escpos.cut(EscPos.CutMode.FULL);
  escpos.close();

Sending hello world to system out:

  EscPos escpos = new EscPos(System.out);
  escpos.writeLF("Hello Wold");
  escpos.feed(5);
  escpos.cut(EscPos.CutMode.FULL);
  escpos.close();

See on samples directory to view more codes.

Downloading

Download code and binaries from the last release of escpos-coffee.

Installation with Maven

<dependency>
  <groupId>com.github.anastaciocintra</groupId>
  <artifactId>escpos-coffee</artifactId>
  <version>4.0.1</version>
</dependency>

Installation with Gradle

Step 1. Add the repository to your build file

repositories {
    mavenCentral()
}

Step 2. Add the dependency

dependencies {
    implementation 'com.github.anastaciocintra:escpos-coffee:4.0.1'
}

Installation without Maven or Gradle

The project can be compiled with the below command:


./mvnw clean package

Then the jar file will be generated inside the 'target/' folder, just add the jar file to your classpath.

Samples

You can find samples code on https://github.com/anastaciocintra/escpos-coffee-samples

getstart sample

Send info of the library to the printer.

textstyle sample

Shows how to construnct one simple receipt.

Also this sample show how simple is to create diferent text styles, like title, subtitle, bold, etc.

  Style title = new Style()
          .setFontSize(Style.FontSize._3, Style.FontSize._3)
          .setJustification(EscPosConst.Justification.Center);

graphicsimage, bitimage and rasterimage samples

Shows how to work with ImageWrapper.

Then you will see things like how to print on center-justified one image, like this:

    escpos.writeLF("print on Center");
    imageWrapper.setJustification(EscPosConst.Justification.Center);
    escpos.write(imageWrapper, escposImage);

dithering sample

Shows how to work with BitonalThreshold and BitonalOrderedDither.

Bellow, we can see how to use ordered dither class.

  algorithm = new BitonalOrderedDither();
  EscPosImage escposImage = new EscPosImage(new CoffeeImageImpl(imageBufferedImage), algorithm);     
  escpos.write(imageWrapper, escposImage);

barcode sample

Shows barcode, PDF417 and qrcode.

Bellow, code to send barcode to the printer

  BarCode barcode = new BarCode();
  escpos.write(barcode, "hello barcode");

codetable sample

Shows how to send texts from different languages.

  escpos.setCharacterCodeTable(CharacterCodeTable.CP863_Canadian_French);
  escpos.writeLF("Liberté et Fraternité.");

Versioning

Using SemVer for versioning.

Lastest release here.

Contributting

Contributors are welcome, but before you do it its important to read and agree with CODE_OF_CONDUCT.md and CONTRIBUTING.md.

Acknowledgments

I would like to thanks Michael Billington and contributors for the great work on the mike42/escpos-php project that inspired me to start this project.

nunoazev/escpos-coffee