MinIO Java SDK is Simple Storage Service (aka S3) client to perform bucket and object operations to any Amazon S3 compatible object storage service.
For a complete list of APIs and examples, please take a look at the Java Client API Reference documentation.
Java 1.8 or above.
<dependency>
<groupId>io.minio</groupId>
<artifactId>minio</artifactId>
<version>8.5.13</version>
</dependency>dependencies {
implementation("io.minio:minio:8.5.13")
}
The latest JAR can be downloaded from here
This example program connects to an object storage server, makes a bucket on the server and then uploads a file to the bucket.
You need three items in order to connect to an object storage server.
| Parameters | Description |
|---|---|
| Endpoint | URL to S3 service. |
| Access Key | Access key (aka user ID) of an account in the S3 service. |
| Secret Key | Secret key (aka password) of an account in the S3 service. |
This example uses MinIO server playground https://play.min.io. Feel free to use this service for test and development.
import io.minio.BucketExistsArgs;
import io.minio.MakeBucketArgs;
import io.minio.MinioClient;
import io.minio.UploadObjectArgs;
import io.minio.errors.MinioException;
import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
public class FileUploader {
public static void main(String[] args)
throws IOException, NoSuchAlgorithmException, InvalidKeyException {
try {
// Create a minioClient with the MinIO server playground, its access key and secret key.
MinioClient minioClient =
MinioClient.builder()
.endpoint("https://play.min.io")
.credentials("Q3AM3UQ867SPQQA43P2F", "zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG")
.build();
// Make 'asiatrip' bucket if not exist.
boolean found =
minioClient.bucketExists(BucketExistsArgs.builder().bucket("asiatrip").build());
if (!found) {
// Make a new bucket called 'asiatrip'.
minioClient.makeBucket(MakeBucketArgs.builder().bucket("asiatrip").build());
} else {
System.out.println("Bucket 'asiatrip' already exists.");
}
// Upload '/home/user/Photos/asiaphotos.zip' as object name 'asiaphotos-2015.zip' to bucket
// 'asiatrip'.
minioClient.uploadObject(
UploadObjectArgs.builder()
.bucket("asiatrip")
.object("asiaphotos-2015.zip")
.filename("/home/user/Photos/asiaphotos.zip")
.build());
System.out.println(
"'/home/user/Photos/asiaphotos.zip' is successfully uploaded as "
+ "object 'asiaphotos-2015.zip' to bucket 'asiatrip'.");
} catch (MinioException e) {
System.out.println("Error occurred: " + e);
System.out.println("HTTP trace: " + e.httpTrace());
}
}
}$ javac -cp minio-8.5.13-all.jar FileUploader.java$ java -cp minio-8.5.13-all.jar:. FileUploader
'/home/user/Photos/asiaphotos.zip' is successfully uploaded as object 'asiaphotos-2015.zip' to bucket 'asiatrip'.
$ mc ls play/asiatrip/
[2016-06-02 18:10:29 PDT] 82KiB asiaphotos-2015.zipPlease refer Contributors Guide
