Java용 GroupDocs.Signature를 사용하여 PDF에서 사용자 지정 QR 코드 직렬화 및 암호화를 구현하는 방법

<dependency>
    <groupId>com.groupdocs</groupId>
    <artifactId>groupdocs-signature</artifactId>
    <version>23.12</version>
</dependency>

implementation 'com.groupdocs:groupdocs-signature:23.12'

import com.groupdocs.signature.Signature;

public class SetupGroupDocs {
    public static void main(String[] args) {
        Signature signature = new Signature("YOUR_DOCUMENT_DIRECTORY/sample.pdf");
        // 여기에 코드를 입력하세요...
    }
}

import com.groupdocs.signature.domain.extensions.serialization.FormatAttribute;
import java.math.BigDecimal;
import java.util.Date;

class DocumentSignatureData {
    @FormatAttribute(propertyName = "SignID")
    public String ID;

    public void setID(String value) { 
        this.ID = value; 
    }

    @FormatAttribute(propertyName = "SAuth")
    public String author;

    public void setAuthor(String value) {
        this.author = value;
    }

    @FormatAttribute(propertyName = "SDate", propertyFormat = "yyyy-MM-dd")
    public Date signed = new Date();

    public void setSigned(Date value) {
        this.signed = value;
    }

    @FormatAttribute(propertyName = "SDFact", propertyFormat = "N2")
    public BigDecimal dataFactor = new BigDecimal(0.01);

    public void setDataFactor(BigDecimal value) {
        this.dataFactor = value;
    }
}

import com.groupdocs.signature.Signature;
import com.groupdocs.signature.domain.Padding;
import com.groupdocs.signature.domain.enums.HorizontalAlignment;
import com.groupdocs.signature.domain.enums.VerticalAlignment;
import com.groupdocs.signature.domain.extensions.encryption.IDataEncryption;
import com.groupdocs.signature.domain.qrcodes.QrCodeTypes;
import com.groupdocs.signature.exception.GroupDocsSignatureException;
import com.groupdocs.signature.options.sign.QrCodeSignOptions;
import java.io.File;
import java.math.BigDecimal;
import java.util.Date;
import java.util.UUID;

class SignWithQRCodeCustomSerialization {
    String filePath = "YOUR_DOCUMENT_DIRECTORY/sample.pdf"; 
    String outputFilePath = new File("YOUR_OUTPUT_DIRECTORY", "SignedQRCodeCustomSerialization.pdf").getPath();

    public void signDocument() throws Exception {
        Signature signature = new Signature(filePath);

        // 여기에 사용자 정의 암호화 논리를 구현하세요
        IDataEncryption encryption = new CustomXOREncryption();

        DocumentSignatureData documentSignature = new DocumentSignatureData();
        documentSignature.setID(UUID.randomUUID().toString());
        documentSignature.setAuthor(System.getenv("USERNAME")); 
        documentSignature.setSigned(new Date());
        documentSignature.setDataFactor(new BigDecimal("11.22"));

        QrCodeSignOptions options = new QrCodeSignOptions();
        options.setData(documentSignature);
        options.setEncodeType(QrCodeTypes.QR);
        options.setDataEncryption(encryption);

        // 정렬 및 모양 구성
        options.setHeight(100);
        options.setWidth(100);
        options.setVerticalAlignment(VerticalAlignment.Bottom);
        options.setHorizontalAlignment(HorizontalAlignment.Right);
        
        Padding padding = new Padding();
        padding.setRight(10);
        padding.setBottom(10);
        options.setMargin(padding);

        signature.sign(outputFilePath, options);
    }
}