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Java Framework based on Spring Framework, Freemarker and Simplicity

There is a newer version: 1.189

package com.clickntap.platform;

import java.io.File;
import java.io.InputStream;

import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import com.amazonaws.services.s3.model.CannedAccessControlList;
import com.amazonaws.services.s3.model.ObjectMetadata;
import com.amazonaws.services.s3.model.PutObjectRequest;
import com.amazonaws.services.s3.model.PutObjectResult;

public class S3 {

  private String accessKey;
  private String secretKey;
  private String bucketName;
  private String region;
  private AmazonS3 client = null;

  public void init() throws Exception {
    AmazonS3ClientBuilder builder = AmazonS3ClientBuilder.standard().withRegion(getRegion());
    if (accessKey != null && secretKey != null) {
      builder = builder.withCredentials(new AWSStaticCredentialsProvider(new BasicAWSCredentials(getAccessKey(), getSecretKey())));
    }
    client = builder.build();
  }

  public String getUrl() {
    return getUrl(null);
  }

  public String getUrl(String key) {
    try {
      return client.getUrl(getBucketName(), key).toString();
    } catch (Exception e) {
      return null;
    }
  }

  public PutObjectResult upload(File file, String path) throws Exception {
    return client.putObject(new PutObjectRequest(getBucketName(), path, file).withCannedAcl(CannedAccessControlList.PublicRead));
  }

  public PutObjectResult upload(InputStream in, String path, String contentType, long contentLength) throws Exception {
    ObjectMetadata metadata = new ObjectMetadata();
    metadata.setContentType(contentType);
    metadata.setContentLength(contentLength);
    return client.putObject(new PutObjectRequest(getBucketName(), path, in, metadata).withCannedAcl(CannedAccessControlList.PublicRead));
  }

  public void delete(String path) throws Exception {
    client.deleteObject(getBucketName(), path);
  }

  public String getAccessKey() {
    return accessKey;
  }

  public void setAccessKey(String accessKey) {
    this.accessKey = accessKey;
  }

  public String getSecretKey() {
    return secretKey;
  }

  public void setSecretKey(String secretKey) {
    this.secretKey = secretKey;
  }

  public String getBucketName() {
    return bucketName;
  }

  public void setBucketName(String bucketName) {
    this.bucketName = bucketName;
  }

  public String getRegion() {
    if (region == null) {
      return Regions.EU_WEST_1.getName();
    }
    return region;
  }

  public void setRegion(String region) {
    this.region = region;
  }

}