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Change QR Code Color with Java REST API

Learn how to change QR code color with a Java REST API in this hands‑on tutorial. You’ll create a colored QR code generator using a Java REST interface and the Java‑based Aspose.BarCode Cloud SDK. Every customization option for the QR code image is explained in detail.

Prerequisite

Steps to Change Color of QR Code with Java Low Code API

  1. Include the Aspose.BarCode Cloud SDK API and Model namespaces to access barcode generation classes
  2. Create a Configuration object and set the API base URL, client ID, and client secret for authentication with Aspose Cloud
  3. Specify the name of the output image file where the generated QR code will be saved
  4. Create a GenerateApi object using the configuration to enable barcode generation
  5. Call the GenerateAsync() method with parameters such as barcode type, input text, image format, and custom foreground/background colors
  6. Create a file stream with the specified file name and copy the generated QR code data into it

These steps summarize how to create a colored QR code with Java RESTful Service. First, connect to Aspose.BarCode Cloud by providing your credentials and setting up the API, then generating a QR code with your chosen text, colors, and image format. Finally, save the QR code to a file on the computer.

Code to Create Colored QR Code with Java-based API

The example above shows how to set the QR code background color using the Java REST API. By sending a single GET request that includes the barcode type, the text to encode, foreground and background colors, size, and rotation, the service returns the generated QR code as an image stream—ready to be saved or embedded directly into your application.

With this tutorial you now know how to produce a QR code in any color you choose. For a straightforward example of generating a plain QR code, see our article on Generate QR with Java REST API.

 

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