Javaでパスワード保護されたWordドキュメントを比較する方法

<repositories>
   <repository>
      <id>repository.groupdocs.com</id>
      <name>GroupDocs Repository</name>
      <url>https://releases.groupdocs.com/comparison/java/</url>
   </repository>
</repositories>
<dependencies>
   <dependency>
      <groupId>com.groupdocs</groupId>
      <artifactId>groupdocs-comparison</artifactId>
      <version>25.2</version>
   </dependency>
</dependencies>

import com.groupdocs.comparison.Comparer;
import java.io.FileInputStream;
import com.groupdocs.comparison.options.load.LoadOptions;

public class BasicProtectedDocumentLoad {
    public static void main(String[] args) throws Exception {
        // Replace with your actual document path
        String sourcePath = "YOUR_DOCUMENT_DIRECTORY/source_protected.docx";
        
        try (FileInputStream sourceStream = new FileInputStream(sourcePath)) {
            // The magic happens here - LoadOptions handles the password
            Comparer comparer = new Comparer(sourceStream, new LoadOptions("your_password_here"));
            
            // Your comparer is now ready to use
            System.out.println("Document loaded successfully!");
        }
    }
}

import com.groupdocs.comparison.Comparer;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import com.groupdocs.comparison.options.load.LoadOptions;

public class CompleteDocumentComparison {
    public static void main(String[] args) throws Exception {
        // Define your file paths
        String sourcePath = "YOUR_DOCUMENT_DIRECTORY/source_protected.docx";
        String target1Path = "YOUR_DOCUMENT_DIRECTORY/target1_protected.docx";
        String target2Path = "YOUR_DOCUMENT_DIRECTORY/target2_protected.docx";
        String outputPath = "YOUR_OUTPUT_DIRECTORY/comparison_result.docx";
        
        // Step 1: Load the source document
        try (InputStream sourceStream = new FileInputStream(sourcePath)) {
            Comparer comparer = new Comparer(sourceStream, new LoadOptions("source_password"));
            
            // Step 2: Add first target document
            try (InputStream target1Stream = new FileInputStream(target1Path)) {
                comparer.add(target1Stream, new LoadOptions("target1_password"));
            }
            
            // Step 3: Add second target document (if needed)
            try (InputStream target2Stream = new FileInputStream(target2Path)) {
                comparer.add(target2Stream, new LoadOptions("target2_password"));
            }
            
            // Step 4: Perform comparison and save results
            try (OutputStream resultStream = new FileOutputStream(outputPath)) {
                comparer.compare(resultStream);
                System.out.println("Comparison completed! Check: " + outputPath);
            }
        }
    }
}

// Wrong way
new LoadOptions(); // No password provided

// Right way  
new LoadOptions("correct_password");

// Good practice - explicit resource management
try (FileInputStream stream = new FileInputStream(path)) {
    // Use stream
} // Automatically closed here

// Use File.exists() to debug path issues
File sourceFile = new File(sourcePath);
if (!sourceFile.exists()) {
    throw new RuntimeException("Source file not found: " + sourcePath);
}

public class OptimizedComparison {
    public static void compareDocuments(String source, String target, String output) {
        try (FileInputStream sourceStream = new FileInputStream(source);
             FileInputStream targetStream = new FileInputStream(target);
             FileOutputStream outputStream = new FileOutputStream(output)) {
            
            Comparer comparer = new Comparer(sourceStream, new LoadOptions("password"));
            comparer.add(targetStream, new LoadOptions("password"));
            comparer.compare(outputStream);
            
        } catch (Exception e) {
            System.err.println("Comparison failed: " + e.getMessage());
            // Add proper logging here
        }
    }
}

public class LegalDocumentComparison {
    public void compareContracts(String originalContract, String revisedContract) {
        // Compare two versions of a legal contract
        // Highlight changes for legal review
        // Generate detailed change report
    }
}

public class FinancialAuditComparison {
    public void auditFinancialReports(List<String> reportPaths) {
        // Compare multiple quarterly reports
        // Identify discrepancies across departments
        // Generate audit trail documentation
    }
}

public class AcademicResearchComparison {
    public void checkPlagiarism(String studentPaper, List<String> referencePapers) {
        // Compare student submission against reference materials
        // Generate similarity reports
        // Flag potential plagiarism issues
    }
}

import com.groupdocs.comparison.options.CompareOptions;

// Example of advanced comparison settings
CompareOptions options = new CompareOptions();
options.setShowDeletedContent(true);
options.setShowInsertedContent(true);
options.setGenerateSummaryPage(true);

comparer.compare(outputStream, options);