Fetching and Recognizing Barcode in Java

Introduction

Are you looking to integrate barcode recognition into your Java application effortlessly? Aspose.BarCode for Java provides a powerful and user-friendly solution for fetching and recognizing barcodes with ease. In this step-by-step guide, we’ll walk you through the process of fetching and recognizing barcodes using Aspose.BarCode, ensuring a seamless integration into your Java project.

Prerequisites

Before diving into the tutorial, make sure you have the following prerequisites in place:

• Basic understanding of Java programming.
• Aspose.BarCode for Java library installed. You can download it here.
• Access to a database with barcode images stored in BLOB format.
• Java Development Kit (JDK) installed on your machine.

Import Packages

To get started, import the necessary packages for your Java project. Ensure that the Aspose.BarCode library is included in your project dependencies.

import com.aspose.barcode.barcoderecognition.BarCodeReader;
import com.aspose.barcode.barcoderecognition.BarCodeResult;
import com.aspose.barcode.barcoderecognition.DecodeType;

import java.io.*;
import java.sql.*;

Step 1: Establish Database Connection

String strBarCodeImage = "c:\\temp\\code39.jpg";

// Open a connection to the database
Connection con = null;
Class.forName("com.mysql.jdbc.Driver").newInstance();
con = DriverManager.getConnection(Common.HOST_URI, Common.USERNAME, Common.PASSWORD);

Step 2: Execute SQL Query

// Create a statement to execute the SELECT SQL
PreparedStatement st = con.prepareStatement("SELECT * FROM Product ");
st.executeQuery();
ResultSet rs = st.getResultSet();

Step 3: Fetch and Create Images

while (rs.next()) {
    // Read BLOB field and create an image from it
    String len1 = rs.getString("BarCodeImage");
    int len = len1.length();
    byte[] b = new byte[len];
    InputStream in = rs.getBinaryStream("BarCodeImage");

    int index = in.read(b, 0, len);
    OutputStream outImgBarCode = new FileOutputStream(strBarCodeImage);

    while (index != -1) {
        // Write bytes to file
        outImgBarCode.write(b, 0, index);
        // Read next bytes
        index = in.read(b, 0, len);
    }
    outImgBarCode.close();

Step 4: Read Barcode from Image

// Read the barcode from the image
BarCodeReader reader = new BarCodeReader(strBarCodeImage, DecodeType.CODE_39_STANDARD);

for (BarCodeResult result : reader.readBarCodes()) {
    System.out.println("CodeText: " + result.getCodeText());
    System.out.println("Symbology type: " + result.getCodeType());
}

nCount++;
}

System.out.println(nCount + " records found.");
con.close();
} catch (Exception ex) {
System.out.println(ex.getMessage());
}

By following these steps, you can seamlessly integrate Aspose.BarCode into your Java application, enabling efficient fetching and recognition of barcodes from a database.

Conclusion

In conclusion, Aspose.BarCode for Java simplifies the process of fetching and recognizing barcodes, making it an ideal choice for developers seeking a reliable and efficient solution. By following this guide, you can effortlessly implement barcode recognition in your Java applications.

Frequently Asked Questions

Is Aspose.BarCode compatible with all barcode types?

Yes, Aspose.BarCode supports a wide range of barcode types, including CODE_39_STANDARD, QR Code, and more. Check the documentation for the full list.

Can I use Aspose.BarCode with different databases?

Absolutely, Aspose.BarCode is designed to work with various databases. Ensure that you adapt the database connection details accordingly.

How can I handle errors during barcode recognition?

Exception handling is crucial. Make sure to implement robust error handling to address any unforeseen issues during barcode recognition.

Is Aspose.BarCode suitable for large-scale applications?

Yes, Aspose.BarCode is designed to handle large-scale applications, providing high performance and reliability.

Are temporary licenses available for testing purposes?

Yes, you can obtain a temporary license here for testing and evaluation purposes.