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Java Examples

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(Java) REST Upload String

Example to upload the contents of a string to the Amazon S3 service.

Chilkat Java Downloads

Java Libs for Windows, Linux, Alpine Linux,
MAC OS X, Solaris, FreeBSD, OpenBSD,
Raspberry Pi and other single board computers

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 example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    CkRest rest = new CkRest();

    //  Connect to the Amazon AWS REST server.
    boolean bTls = true;
    int port = 443;
    boolean bAutoReconnect = true;
    boolean success = rest.Connect("s3.amazonaws.com",port,bTls,bAutoReconnect);

    //  ----------------------------------------------------------------------------
    //  Important: For buckets created in regions outside us-east-1,
    //  there are three important changes that need to be made.
    //  See Working with S3 Buckets in Non-us-east-1 Regions for the details.
    //  ----------------------------------------------------------------------------

    //  Provide AWS credentials for the REST call.
    CkAuthAws authAws = new CkAuthAws();
    authAws.put_AccessKey("AWS_ACCESS_KEY");
    authAws.put_SecretKey("AWS_SECRET_KEY");
    authAws.put_ServiceName("s3");
    success = rest.SetAuthAws(authAws);

    //  Set the bucket name via the HOST header.
    //  In this case, the bucket name is "chilkat100".
    rest.put_Host("chilkat100.s3.amazonaws.com");

    //  Load a text file into memory.
    CkFileAccess fac = new CkFileAccess();
    String fileContents = fac.readEntireTextFile("qa_data/xml/hamlet.xml","utf-8");
    if (fac.get_LastMethodSuccess() != true) {
        System.out.println(fac.lastErrorText());
        return;
        }

    //  To send the file in gzip or deflate compressed format, set the Content-Encoding request
    //  header to "gzip" or "deflate".  (this is optional)
    success = rest.AddHeader("Content-Encoding","gzip");

    //  Indicate the Content-Type of our upload.  (This is optional)
    success = rest.AddHeader("Content-Type","text/xml");

    //  We can add an "Expect: 100-continue" header so that if the request is rejected
    //  by the server immediately after receiving the request header, it can respond
    //  and the client (Chilkat) can avoid sending the file data.
    //  (this is optional)
    success = rest.AddHeader("Expect","100-continue");

    //  Upload the file to Amazon S3.
    String responseBodyStr = rest.fullRequestString("PUT","/hamlet_play.xml",fileContents);
    if (rest.get_LastMethodSuccess() != true) {
        System.out.println(rest.lastErrorText());
        return;
        }

    //  Did we get a 200 response indicating success?
    int statusCode = rest.get_ResponseStatusCode();
    if (statusCode != 200) {
        System.out.println("Error response: " + responseBodyStr);
        System.out.println("Status code: " + statusCode + ", Status text: " + rest.responseStatusText());
        return;
        }

    System.out.println("File successfully uploaded.");
  }
}

 

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