Working with AWS

How to create file in AWS

public void createFile(String bucketName, String existingFilePath) throws IOException



{

 S3Object transectionObject = s3.getObject(new GetObjectRequest(

        bucketName, existingFilePath));

 Bucket bucket=new Bucket(); //Create object of Bucket.

 bucket.setName("bookinginfo"); //Mention bucket name.

 ObjectMetadata metadata = new ObjectMetadata(); // Create object of ObjectMetadata.

   String name=" Yogendrasingh"; // Some text which need to enter in newly created txt file.

    System.out.println(name);

//ByteArrayInputStream for reading text of your file.

   ByteArrayInputStream input = new ByteArrayInputStream(name.getBytes());

    s3.putObject(    bucket.getName(), 

      "AWS file path/"+FileName+".txt", 

      input,metadata

    );

 }

Read and Write File from AWS

public void ReadWriteFile(String bucketName, String existingFilePath) throws IOException

{

 S3Object s3object = s3.getObject(new GetObjectRequest(

        bucketName, existingFilePath));

 BufferedReader reader = new BufferedReader(new InputStreamReader(s3object.getObjectContent()));// This is to read the file.

 

String line;

    String showline="";

    int count=0;

    while((line = reader.readLine()) != null) {

 if(line.isEmpty()==false)

     {      showline=showline+"\r\n"+line;

       count++;

     }

    }

    System.out.println(showline);//File read and saved in variable;

     

   ObjectMetadata metadata = new ObjectMetadata();

   String Text=showline+"\r\n"+”New text”; //New and old text saved in variable

      

   ByteArrayInputStream input1 = new ByteArrayInputStream(Text.getBytes());

      s3.putObject(

     bucketName, 

     "AWS path/"+FileName+".txt", 

     input1,metadata

   );

 reader.close();

}

 

Read property file from AWS

public void checkAccess(String bucketName, String key) throws IOException

{

 S3Object s3object = s3.getObject(new GetObjectRequest(

            bucketName, key));

  InputStream fileName= s3object.getObjectContent();

  //BufferedReader load = new BufferedReader(new InputStreamReader(s3object.getObjectContent()));

  //computerName();

  userAccessFile.load(fileName);

  Set<Object> keys=userAccessFile.keySet();

  newUserflag=keys.contains(UserID);

  AccessStatus=userAccessFile.getProperty(UserID);

  

  //System.out.println(newUserflag);

  //System.out.println(journeyDetails.getProperty("yogendrasingh"));

  //System.out.println(journeyDetails);

  fileName.close();

}