Learn how to generate a custom QR code with Java REST API in this step‑by‑step tutorial. You’ll build a custom QR code generator using the Java Low Code API and Aspose’s Java‑based Cloud SDK, explore every required parameter, apply QR‑code customizations, and save the output as an image on your disk.
Prerequisite
- Create an account and get API credentials for generating custom QR codes
- Download Aspose.BarCode Cloud SDK for Java to personalize QR codes
- Set up a Java project with the above SDK
Steps to Make Custom QR Code with Java REST Interface
- Start by adding the using lines so your program knows about the Aspose.BarCode Cloud classes
- Create a configuration object and give it the base API address, your client ID, and your client secret
- Make a GenerateApi object from your configuration so you can send barcode requests
- Set up the data you want to encode — in this case, a QR code containing a web link
- Pick colors, image type, rotation, resolution, and size for the barcode image
- Run the GenerateBodyAsync method with your settings to build the barcode image
- Open a new file stream called output.png to hold the generated image
- Copy the data from the generated barcode into your file so it’s saved on your computer
These steps outline the process for developing a custom QR generator using Java RESTful Service. First, connect your app to Aspose.BarCode Cloud by importing the right classes, setting up the configuration, and creating a GenerateApi object. Then you provide the QR code data, customize its look, generate the barcode, and save the resulting image as output.png on your computer.
Code to Customize a QR Code with Java-based API
This example illustrates how to generate a custom barcode with Java REST API. The BarcodeImageParams object is where you define the visual characteristics of the barcode image—its colors, size, sharpness, format, and even rotation—ensuring it aligns perfectly with the style you need for printing or displaying.
You’ve now learned how to build your own QR code generator with a Java REST interface. When you’re ready to generate QR codes, see the companion guide on Scan QR code with Java REST API.
