(Java) S3 Download Specific Version of File

Demonstrates how to download a file from the Amazon S3 service using the versionId query parameter.

Note: This example requires Chilkat v9.5.0.89 or later. (A problem regarding AwsSubResources w/ downloads was fixed shortly after the v9.5.0.88 release.)

Chilkat Java Downloads Java Libs for Windows, MacOS, Linux, Alpine Linux, Solaris Java Libs for Android

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkHttp http = new CkHttp();

    http.put_AwsAccessKey("AWS_ACCESS_KEY");
    http.put_AwsSecretKey("AWS_SECRET_KEY");
    http.put_S3Ssl(true);
    http.put_AwsRegion("us-east-1");
    http.put_AwsEndpoint("s3.amazonaws.com");
    http.put_AwsSubResources("versionId=x8UPzRsgskmbe55lEQvhLi25PQl2lcFH");

    String bucketName = "chilkat100";
    String objectName = "frenchUtf8.txt";
    String localFilePath = "qa_output/frenchUtf8.txt";

    boolean success = http.S3_DownloadFile(bucketName,objectName,localFilePath);

    if (success != true) {
        System.out.println(http.lastErrorText());
        }
    else {
        System.out.println("File downloaded.");
        }
  }
}