Java 註解中的自訂使用者角色：完整實作指南

<repositories>
   <repository>
      <id>repository.groupdocs.com</id>
      <name>GroupDocs Repository</name>
      <url>https://releases.groupdocs.com/annotation/java/</url>
   </repository>
</repositories>

<dependencies>
   <dependency>
      <groupId>com.groupdocs</groupId>
      <artifactId>groupdocs-annotation</artifactId>
      <version>25.2</version>
   </dependency>
</dependencies>

import com.groupdocs.annotation.models.Reply;
import com.groupdocs.annotation.models.User;
import com.groupdocs.annotation.models.Role;

import java.util.ArrayList;
import java.util.Calendar;

// Create the first reply with an EDITOR role
Reply reply1 = new Reply();
reply1.setComment("This comment will be applied");
reply1.setRepliedOn(Calendar.getInstance().getTime());
User user1 = new User(1, "Reviewer", Role.EDITOR);
reply1.setUser(user1);

// Create the second reply with a VIEWER role
Reply reply2 = new Reply();
reply2.setComment("This comment will NOT be applied");
reply2.setRepliedOn(Calendar.getInstance().getTime());
User user2 = new User(1, "Member", Role.VIEWER);
reply2.setUser(user2);

java.util.List<Reply> replies = new ArrayList<>();
replies.add(reply1);
replies.add(reply2);

import com.groupdocs.annotation.models.Rectangle;
import com.groupdocs.annotation.models.PenStyle;
import com.groupdocs.annotation.models.AreaAnnotation;

// Initialize the AreaAnnotation object
AreaAnnotation area = new AreaAnnotation();
area.setBackgroundColor(65535); // Use RGB for color coding
area.setBox(new Rectangle(100, 100, 100, 100)); // Position and size
area.setCreatedOn(Calendar.getInstance().getTime());
area.setMessage("This is an area annotation");
area.setOpacity(0.7);
area.setPageNumber(0);
area.setPenColor(65535); // Outline color
area.setPenStyle(PenStyle.DOT);
area.setPenWidth((byte) 3);
area.setReplies(replies); // Attach the replies to this annotation

import com.groupdocs.annotation.Annotator;

// Initialize annotator with your input PDF file path
final Annotator annotator = new Annotator("YOUR_DOCUMENT_DIRECTORY/input.pdf");
annotator.add(area); // Add the area annotation
annotator.save("YOUR_OUTPUT_DIRECTORY/output.pdf"); // Save the annotated document
annotator.dispose(); // Release resources after saving

// Example of how you might organize roles in a real application
public enum DocumentRole {
    OWNER(Role.EDITOR, true, true, true),    // Can edit, delete, and manage permissions
    COLLABORATOR(Role.EDITOR, true, false, false), // Can edit but not delete or manage
    REVIEWER(Role.VIEWER, false, false, false);    // Can only view and comment
    
    private final Role baseRole;
    private final boolean canEdit;
    private final boolean canDelete;
    private final boolean canManagePermissions;
    
    // Constructor and methods...
}

// Example: Setting up annotations for an educational document
User instructor = new User(1, "Dr. Smith", Role.EDITOR);
User student = new User(2, "John Doe", Role.VIEWER);

// Instructor can add official feedback
Reply instructorFeedback = new Reply();
instructorFeedback.setComment("Excellent analysis! Consider adding more examples.");
instructorFeedback.setUser(instructor);

// Student can ask questions but can't modify instructor comments
Reply studentQuestion = new Reply();
studentQuestion.setComment("Could you clarify the third point?");
studentQuestion.setUser(student);