Javaでバイト配列をPDFに変換する方法

IronPDF: Java PDF Library

IronPDF Java PDF Library is a popular Java library for generating, reading, and manipulating PDF documents. It is developed by Iron Software, a software development company that specializes in developing productivity libraries and tools.

IronPDF provides a range of features for creating and manipulating PDFs. This includes the ability to:

1. Convert HTML content to PDF and plain text documents to PDF, to add text and images to PDFs,
2. Create and fill PDF forms with ease,
3. Merge multiple PDFs and split PDFs into separate documents,
4. and more.

The library also includes support for encryption to protect your PDFs and digital signatures for document security.

IronPDF uses a simple and intuitive API that makes it easy for developers of all levels to use. Additionally, IronPDF offers comprehensive documentation, code samples to get you started, and support to help developers get started with the library quickly.

Let's explore how to use IronPDF to convert a byte array to a PDF file.

Install IronPDF Java library in Maven Project

To install the IronPDF Java library in a Maven project, follow these steps:

1. Open your project's pom.xml file and locate the <dependencies> tag.

2. Add the following XML code to the <dependencies> tag to add IronPDF for Java as a dependency:

   <!-- No actual dependency provided, placeholder for illustration -->

   <!-- No actual dependency provided, placeholder for illustration -->

   XML

3. Add the following XML code to the <dependencies> tag to add the SLF4J Simple logger, which IronPDF for Java uses to log status messages to the console.

   <dependency>
     <groupId>org.slf4j</groupId>
     <artifactId>slf4j-simple</artifactId>
     <version>2.0.3</version>
   </dependency>

   <dependency>
     <groupId>org.slf4j</groupId>
     <artifactId>slf4j-simple</artifactId>
     <version>2.0.3</version>
   </dependency>

   XML
4. Save the pom.xml file.

After you save the pom.xml file, Maven will automatically download and install the IronPDF for Java library and the SLF4J Simple logger. You can then use the IronPDF library in your Java code.

Note that the version number used in the XML code above may not be the latest version available when you install the library. You should always use the latest library version for bug fixes and new features.

Sample Code

Here is the sample code to convert the byte array to a PDF file:

package IronPDF.ironpdf_java;

import java.io.IOException;
import java.nio.charset.StandardCharsets;

import com.ironsoftware.ironpdf.*;

public class Test {
    public static void main(String[] args) throws IOException {
        // Define the byte array representing the ASCII characters
        byte[] byteArray = {84, 104, 105, 115, 32, 105, 115, 32, 98, 121, 116, 101, 32, 97, 114, 114, 97, 121};

        // Convert the byte array to a string using US_ASCII encoding
        String data = new String(byteArray, StandardCharsets.US_ASCII);

        // Embed the string data in HTML format
        String HTML = "<h1>" + data + "</h1>";

        // Apply your license key for IronPDF
        License.setLicenseKey("YOUR-LICENSE-KEY");

        // Render the HTML as a PDF document using IronPDF
        PdfDocument pdf = PdfDocument.renderHtmlAsPdf(HTML);

        // Save the PDF file to a specified location
        pdf.saveAs("C:\\byteToPdf.pdf");
    }
}

package IronPDF.ironpdf_java;

import java.io.IOException;
import java.nio.charset.StandardCharsets;

import com.ironsoftware.ironpdf.*;

public class Test {
    public static void main(String[] args) throws IOException {
        // Define the byte array representing the ASCII characters
        byte[] byteArray = {84, 104, 105, 115, 32, 105, 115, 32, 98, 121, 116, 101, 32, 97, 114, 114, 97, 121};

        // Convert the byte array to a string using US_ASCII encoding
        String data = new String(byteArray, StandardCharsets.US_ASCII);

        // Embed the string data in HTML format
        String HTML = "<h1>" + data + "</h1>";

        // Apply your license key for IronPDF
        License.setLicenseKey("YOUR-LICENSE-KEY");

        // Render the HTML as a PDF document using IronPDF
        PdfDocument pdf = PdfDocument.renderHtmlAsPdf(HTML);

        // Save the PDF file to a specified location
        pdf.saveAs("C:\\byteToPdf.pdf");
    }
}

import java.io.IOException;
import java.nio.charset.StandardCharsets;

import com.ironsoftware.ironpdf.*;

import java.io.IOException;
import java.nio.charset.StandardCharsets;

import com.ironsoftware.ironpdf.*;

byte[] byteArray = {84, 104, 105, 115, 32, 105, 115, 32, 98, 121, 116, 101, 32, 97, 114, 114, 97, 121};

byte[] byteArray = {84, 104, 105, 115, 32, 105, 115, 32, 98, 121, 116, 101, 32, 97, 114, 114, 97, 121};

String data = new String(byteArray, StandardCharsets.US_ASCII);

String data = new String(byteArray, StandardCharsets.US_ASCII);

String HTML = "<h1>" + data + "</h1>";

String HTML = "<h1>" + data + "</h1>";

// Apply your license key
License.setLicenseKey("YOUR-LICENSE-KEY");
PdfDocument pdf = PdfDocument.renderHtmlAsPdf(HTML);
pdf.saveAs("C:\\byteToPdf.pdf");

// Apply your license key
License.setLicenseKey("YOUR-LICENSE-KEY");
PdfDocument pdf = PdfDocument.renderHtmlAsPdf(HTML);
pdf.saveAs("C:\\byteToPdf.pdf");

結論

By following the steps outlined in this article, you can convert a byte array to a PDF file and save it on your local disk.

IronPDF is a commercial library and requires a license purchase for production environments. The cost for an IronPDF license starts at $799 per developer per year; there are other license options available depending on the number of developers and deployment servers.

However, IronPDF offers a free trial of IronPDF that allows developers to test the library and evaluate its features and capabilities. This free trial includes full access to all features of the library. Developers can use it to convert up to 20 pages of a PDF document.