Password Protect XLSX File using Java REST API. https://kb.aspose.cloud/cells/java/password-protect-xlsx-file-using-java-rest-api/

Password Protect XLSX File using Java REST API.java

import com.aspose.cloud.cells.client.ApiException;
import com.aspose.cloud.cells.model.FileInfo;
import com.aspose.cloud.cells.model.FilesResult;
import com.aspose.cloud.cells.model.ProtectWorkbookRequest;
import com.aspose.cloud.cells.request.PostProtectRequest;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.HashMap;

public class Example_PasswordProtectWorkbook {

public void Run() throws IOException, ApiException {
        try {
            String clientID = "ID";
            String clientSecret = "Secret";
            String apiBaseUrl = "https://api.aspose.cloud";
            String apiVersion = "v3.0";

            // Source and output file names
            String localPath = "C:/ExcelFiles/";
            String inputFileName = "Source.xlsx";

            CellsApi protectXlsxtFileApi = new CellsApi(clientID, clientSecret, apiVersion, apiBaseUrl);

            HashMap<String, File> mapFiles = new HashMap<>();
            mapFiles.put(inputFileName, new File(localPath + inputFileName));

            ProtectWorkbookRequest protectXlsxRequest = new ProtectWorkbookRequest();
            protectXlsxRequest.setEncryptWithPassword("test");
            protectXlsxRequest.setAwaysOpenReadOnly(true);

            PostProtectRequest postProtectRequest = new PostProtectRequest();
            postProtectRequest.setFile(mapFiles);
            postProtectRequest.setProtectWorkbookRequest(protectXlsxRequest);

            FilesResult fileResult = protectXlsxtFileApi.postProtect(postProtectRequest);

            for (FileInfo file : fileResult.getFiles()) {
                try {
                    File destinationFile = new File(localPath + "protected_" + file.getFilename());

                    // Create necessary parent directories
                    destinationFile.getParentFile().mkdirs();

                    try (FileInputStream inputStream = new FileInputStream(file.getFileContent());
                         FileOutputStream outputStream = new FileOutputStream(destinationFile)) {

                        byte[] buffer = new byte[4096]; // Buffer size of 4KB
                        int bytesRead;
                        while ((bytesRead = inputStream.read(buffer)) != -1) {
                            outputStream.write(buffer, 0, bytesRead);
                        }
                        System.out.println("XLSX file writing completed");
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
                catch (Exception ex) {
                    System.out.println("An error occurred:" + ex.getMessage());
                }
            }
        }
        catch (Exception ex) {
            System.out.println("An error occurred:" + ex.getMessage());
        }
    }
}