إتقان التوقيعات الرقمية في جافا باستخدام GroupDocs.Signature: دليل شامل

<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 InitializeSignature {
    public static void main(String[] args) {
        String filePath = "path/to/your/document.pdf";
        Signature signature = new Signature(filePath);
        // يمكن إجراء المعالجة الإضافية هنا.
    }
}

import com.groupdocs.signature.Signature;

String filePath = "YOUR_DOCUMENT_DIRECTORY";
Signature signature = new Signature(filePath);

import com.groupdocs.signature.options.sign.ImageSignOptions;
import com.groupdocs.signature.domain.Padding;
import com.groupdocs.signature.domain.enums.HorizontalAlignment;
import com.groupdocs.signature.domain.enums.VerticalAlignment;

ImageSignOptions signOptions = new ImageSignOptions("YOUR_IMAGE_PATH");
signOptions.setVerticalAlignment(VerticalAlignment.Top);
signOptions.setHorizontalAlignment(HorizontalAlignment.Center);
signOptions.setWidth(100);
signOptions.setHeight(40);
signOptions.setMargin(new Padding(20));

String outputFilePath = "YOUR_OUTPUT_DIRECTORY";
signature.sign(outputFilePath, signOptions);

import com.groupdocs.signature.Signature;

String filePath = "YOUR_DOCUMENT_DIRECTORY";
Signature signature = new Signature(filePath);

import com.groupdocs.signature.options.search.ImageSearchOptions;
import java.util.List;

ImageSearchOptions searchOptions = new ImageSearchOptions();
searchOptions.setAllPages(true);

List<ImageSignature> signatures = signature.search(ImageSignature.class, searchOptions);

for (ImageSignature imageSignature : signatures) {
    if (imageSignature != null) {
        System.out.println(
            "Found Image signature at page " + imageSignature.getPageNumber() +
            " and Image Size '" + imageSignature.getSize() + "'."
        );
        System.out.println(  
            "Location at " + imageSignature.getLeft() + "-" + imageSignature.getTop() +
            ". Size is " + imageSignature.getWidth() + "x" + imageSignature.getHeight() +
            "."
        );
    }
}

import com.groupdocs.signature.Signature;

String filePath = "YOUR_DOCUMENT_DIRECTORY";
Signature signature = new Signature(filePath);

import com.groupdocs.signature.domain.ImageSignature;
import java.util.ArrayList;
import java.util.List;

List<ImageSignature> signaturesToUpdate = new ArrayList<>();
// افترضنا أننا استعدنا التوقيعات مسبقًا.
for (ImageSignature imageSignature : /* التوقيعات المسترجعة */) {
    imageSignature.setLeft(imageSignature.getLeft() + 100);
    imageSignature.setTop(imageSignature.getTop() + 100);
    imageSignature.setWidth(200);
    imageSignature.setHeight(50);
    signaturesToUpdate.add(imageSignature);
}

import com.groupdocs.signature.domain.UpdateResult;
import java.io.ByteArrayOutputStream;

UpdateResult updateResult = signature.update(new ByteArrayOutputStream(), signaturesToUpdate);

if (updateResult.getSucceeded().size() == signaturesToUpdate.size()) {
    System.out.println("All signatures were successfully updated!");
} else {
    System.out.println("Successfully updated signatures : " + updateResult.getSucceeded().size());
    System.out.println("Not updated signatures : " + updateResult.getFailed().size());
}