QRService

Overview

The QRService provides utility methods to generate QR codes from text input. It supports:

• Generating QR codes as files.

• Returning QR codes as file streams.

• Encoding QR codes in Base64 format.

Available Functions

generateQrFileStream(String input, int size): FileInputStream

Generates a QR code as a PNG file and returns it as a file stream.

• Parameters:

  • input (String): The text content to encode in the QR code.

  • size (int): The size (in pixels) of the QR code.

• Returns:

  • FileInputStream: A stream to the generated QR file.

• Throws:

  • IOException: If the file cannot be created or read.

generateQrFile(String input, int size): File

Generates a QR code as a PNG file and returns it.

• Parameters:

  • input (String): The text content to encode in the QR code.

  • size (int): The size (in pixels) of the QR code.

• Returns:

  • File: The generated QR code image file.

• Throws:

  • IOException: If the file cannot be created.

generateQrBase64(String input, int size): String

Generates a QR code as a PNG image and encodes it in Base64 format.

• Parameters:

  • input (String): The text content to encode in the QR code.

  • size (int): The size (in pixels) of the QR code.

• Returns:

  • String: A Base64-encoded PNG image of the QR code.

Summary

The QRService provides simple QR code generation with multiple output formats:

• File (File object)

• File Stream (FileInputStream)

• Base64-encoded string

This service is useful for applications requiring QR-based authentication, data sharing, or URL encoding.