Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package dbs; /** * * @author Ranjan Kumar */ import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import com.amazonaws.AmazonClientException; import com.amazonaws.AmazonServiceException; import com.amazonaws.auth.AWSCredentials; import com.amazonaws.auth.AWSStaticCredentialsProvider; import com.amazonaws.auth.profile.ProfileCredentialsProvider; import com.amazonaws.regions.Regions; import com.amazonaws.services.dynamodbv2.AmazonDynamoDB; import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClientBuilder; import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper; import com.amazonaws.services.s3.AmazonS3; import com.amazonaws.services.s3.AmazonS3Client; import com.amazonaws.services.s3.AmazonS3ClientBuilder; import com.amazonaws.services.s3.model.GetObjectRequest; import com.amazonaws.services.s3.model.S3Object; public class Getfroms3 { private static String bucketName = "coolteam"; private static String key = "users.txt"; private static AWSCredentials credentials = new AWSCredentials() { public String getAWSSecretKey() { return "Lzv7mF48GXwhOtUCHAERf2zrtyOQTuOEyBjh8D6q"; } public String getAWSAccessKeyId() { return "AKIAJI2SGM34PTCV7HLQ"; } }; private static AmazonDynamoDB ddb = AmazonDynamoDBClientBuilder.standard().withRegion(Regions.AP_SOUTH_1) .withCredentials(new AWSStaticCredentialsProvider(credentials)).build(); private static DynamoDBMapper mapper = new DynamoDBMapper(ddb); public static void main(String[] args) throws IOException { AmazonS3 s3Client = AmazonS3ClientBuilder.standard().withRegion(Regions.AP_SOUTH_1) .withCredentials(new AWSStaticCredentialsProvider(credentials)).build(); //AmazonS3 s3Client = new AmazonS3Client(new ProfileCredentialsProvider("inhack2hire28")); try { System.out.println("Downloading an object"); S3Object s3object = s3Client.getObject(new GetObjectRequest(bucketName, key)); System.out.println("Content-Type: " + s3object.getObjectMetadata().getContentType()); displayTextInputStream(s3object.getObjectContent()); // Get a range of bytes from an object. GetObjectRequest rangeObjectRequest = new GetObjectRequest(bucketName, key); rangeObjectRequest.setRange(0, 10); S3Object objectPortion = s3Client.getObject(rangeObjectRequest); System.out.println("Printing bytes retrieved."); displayTextInputStream(objectPortion.getObjectContent()); } catch (AmazonServiceException ase) { System.out.println("Caught an AmazonServiceException, which" + " means your request made it " + "to Amazon S3, but was rejected with an error response" + " for some reason."); System.out.println("Error Message: " + ase.getMessage()); System.out.println("HTTP Status Code: " + ase.getStatusCode()); System.out.println("AWS Error Code: " + ase.getErrorCode()); System.out.println("Error Type: " + ase.getErrorType()); System.out.println("Request ID: " + ase.getRequestId()); } catch (AmazonClientException ace) { System.out.println("Caught an AmazonClientException, which means" + " the client encountered " + "an internal error while trying to " + "communicate with S3, " + "such as not being able to access the network."); System.out.println("Error Message: " + ace.getMessage()); } } private static void displayTextInputStream(InputStream input) throws IOException { // Read one text line at a time and display. BufferedReader reader = new BufferedReader(new InputStreamReader(input)); String line = reader.readLine(); line = reader.readLine(); while (true) { line = reader.readLine(); String B = ""; String A[] = new String[3]; int z = 0; for (int i = 0; i < line.length(); ++i) { char x = line.charAt(i); if (x == ' ') continue; else if (x == '|') { if (!("".equals(B))) { A[z++] = B; B = ""; } continue; } B += x; } if (!("".equals(B))) { A[z++] = B; B = ""; } System.out.println(A[0] + " " + A[1] + " " + A[2]); if (A[0] == null || A[0].isEmpty() || A[1] == null || A[1].isEmpty() || A[2] == null || A[2].isEmpty()) continue; System.out.println(" " + line); fillUser(A[0], A[1], A[2]); //System.out.println(); } } private static void fillUser(String a, String b, String c) { DynamodbFill dynamodbFill = new DynamodbFill(); dynamodbFill.setid(a); dynamodbFill.setlatitude(b); dynamodbFill.setlongitude(c); mapper.save(dynamodbFill); } }