Learn how to scan barcodes with a Java REST API in this practical, step‑by‑step tutorial. You’ll create a barcode analyzer powered by a Java RESTful Service using the Aspose.BarCode Cloud SDK for Java, and discover how to extract and display a variety of barcode properties from images in common formats such as JPEG, TIFF, PNG, BMP, and GIF.
Prerequisite
- Create an account and get API credentials for reading a barcode
- Download the Aspose.BarCode Cloud SDK for Java to read multiple barcodes from an image
- Set up a Java project with the above SDK
Steps to Read Barcode with Java-based API
- Add the required namespace Aspose.BarCode.Cloud.Sdk.Api to access the Barcode Cloud API classes
- Create a Configuration object and set the API base URL, ClientId, and ClientSecret for authentication
- Define the file name and open it using a FileStream to provide input for scanning
- Create an instance of the ScanApi class using the configuration to interact with the barcode scanning service
- Call ScanMultipartAsync(fileStream) to process the input image and retrieve recognized barcode details
- Loop through the result.Barcodes collection to access each recognized barcode
- Print out the file name, barcode value, and barcode type for each detected barcode
These steps summarize how to read barcode with Java Low Code API. First, you connect to Aspose Barcode Cloud by setting up your credentials and loading the barcode image you want to scan. Then, the code uses the Scan API to read the image and prints out the barcode value and the type it finds.
Code to Read Barcode from Image with Java REST API
The example code brings the barcode scanner app with Java REST API to life. By examining the returned BarcodeResponse, you can extract the barcode’s raw value, its format, the precise region where it was found, and even its checksum. In other words, you receive the encoded data together with valuable context about how and where the scan succeeded.
By now you’ve seen how easy it is to extract a barcode from any image using the Java REST API. When you’re ready to start generating your own barcodes, check out our companion guide: Generate Barcode with Java REST API.
