Effortless Metered License Integration with Aspose.Page Java

Introduction

Welcome to our comprehensive guide on setting up a metered license in Java using Aspose.Page. If you’re looking to enhance your document processing capabilities and ensure seamless integration with Aspose.Page, you’re in the right place. In this tutorial, we’ll walk you through the process, breaking down each step into easily digestible chunks.

Prerequisites

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

• Basic knowledge of Java programming.
• Aspose.Page library installed. You can download it from here.
• Metered public and private keys, which you can obtain through your Aspose account.

Import Packages

Let’s start by importing the necessary packages for our Java program. Ensure you have the Aspose.Page library integrated into your project.

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import com.aspose.eps.ImageFormat;
import com.aspose.eps.PsDocument;
import com.aspose.eps.device.ImageSaveOptions;

Step 1: Initialize Document and Image Format

The first step is to set up the document and define the desired image format.

// set metered public and private keys
com.aspose.page.Metered metered = new com.aspose.page.Metered();
// Access the setMeteredKey property and pass public and private keys as parameters
metered.setMeteredKey(
    "<type public key here>",
    "<type private key here>");
// The path to the documents directory.
String dataDir = "Your Document Directory";
ImageFormat imageFormat = ImageFormat.PNG;

Step 2: Initialize PostScript Input Stream

In this step, we initialize the PostScript input stream for processing.

// Initialize PostScript input stream
FileInputStream psStream = new FileInputStream(dataDir + "input.ps");
PsDocument document = new PsDocument(psStream);

Step 3: Check Document License

Before proceeding, it’s crucial to verify if the document is properly licensed.

// Check if the document is licensed
if (document.isLicensed())
    System.out.println("Metered License is set successfully.");
else
    System.out.println("Metered License is not set.");

Step 4: Initialize Options and Image Device

Now, let’s initialize options and the image device with default parameters.

// Initialize options object with default parameters.
ImageSaveOptions options = new ImageSaveOptions();
// Initialize ImageDevice object with default parameters.
com.aspose.eps.device.ImageDevice device = new com.aspose.eps.device.ImageDevice();

Step 5: Save EPS File as Image

Save the EPS file as an image using the defined options and device.

// Save EPS file as image
try {
    document.save(device, options);
} finally {
    psStream.close();
}

Step 6: Get and Save Image Bytes

Retrieve image bytes and save them to a file.

// Get images bytes. One bytes array for one page. In our case, we have one page.
byte[][] imagesBytes = device.getImagesBytes();
// Save image bytes to file
FileOutputStream fs = new FileOutputStream(dataDir + "eps_out." + imageFormat.toString().toLowerCase());
try {
    fs.write(imagesBytes[0], 0, imagesBytes[0].length);
} catch (IOException ex) {
    System.out.println(ex.getMessage());
} finally {
    fs.close();
}

Conclusion

Congratulations! You’ve successfully set up a metered license in Java using Aspose.Page. This tutorial provided a step-by-step guide to ensure a smooth integration process.

FAQs

Q: How do I obtain metered public and private keys?

You can obtain these keys through your Aspose account.

Q: Is the Aspose.Page library free?

Aspose.Page offers both free trial and paid versions. Visit here for a free trial.

Q: Can I use Aspose.Page for commercial projects?

Yes, Aspose.Page offers commercial licenses. You can purchase them here.

Q: Where can I find additional documentation?

Refer to the documentation here.

Q: How can I get temporary licenses?

Temporary licenses can be obtained here.