MinIO
Minio是GlusterFS创始人之一Anand Babu Periasamy发布的开源项目。可以做为云存储的解决方案用来保存海量的图片，视频，文档。由于采用Golang实现，服务端可以工作在Windows,Linux, OS X和FreeBSD上。配置简单，基本是复制可执行程序，单行命令可以运行起来。
安装请参考官方文档
本文存在的原因是官方发布了新版SDK但是文档并没有同步更新，官方文档的SDK示例方法都已删除或过期
MinIO的SDK调用
截至目前最新版的依赖，官方发布时间为2020-9-6
<dependency>
<groupId>io.minio</groupId>
<artifactId>minio</artifactId>
<version>7.1.2</version>
</dependency>
package com.minio.service;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import io.minio.*;
import io.minio.http.Method;
public class Minio {
/**
* minio参数
*/
private static final String ENDPOINT = "http://127.0.0.1:9000";
private static final String ACCESS_KEY = "******";
private static final String SECRET_KEY = "******";
/**
* 桶占位符
*/
private static final String BUCKET_PARAM = "${bucket}";
/**
* bucket权限-只读
*/
private static final String READ_ONLY = "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"*\"]},\"Action\":[\"s3:GetBucketLocation\",\"s3:ListBucket\"],\"Resource\":[\"arn:aws:s3:::" + BUCKET_PARAM + "\"]},{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"*\"]},\"Action\":[\"s3:GetObject\"],\"Resource\":[\"arn:aws:s3:::" + BUCKET_PARAM + "/*\"]}]}";
/**
* bucket权限-只读
*/
private static final String WRITE_ONLY = "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"*\"]},\"Action\":[\"s3:GetBucketLocation\",\"s3:ListBucketMultipartUploads\"],\"Resource\":[\"arn:aws:s3:::" + BUCKET_PARAM + "\"]},{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"*\"]},\"Action\":[\"s3:AbortMultipartUpload\",\"s3:DeleteObject\",\"s3:ListMultipartUploadParts\",\"s3:PutObject\"],\"Resource\":[\"arn:aws:s3:::" + BUCKET_PARAM + "/*\"]}]}";
/**
* bucket权限-读写
*/
private static final String READ_WRITE = "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"*\"]},\"Action\":[\"s3:GetBucketLocation\",\"s3:ListBucket\",\"s3:ListBucketMultipartUploads\"],\"Resource\":[\"arn:aws:s3:::" + BUCKET_PARAM + "\"]},{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"*\"]},\"Action\":[\"s3:DeleteObject\",\"s3:GetObject\",\"s3:ListMultipartUploadParts\",\"s3:PutObject\",\"s3:AbortMultipartUpload\"],\"Resource\":[\"arn:aws:s3:::" + BUCKET_PARAM + "/*\"]}]}";
/**
* 文件url前半段
*
* @param bucket 桶
* @return 前半段
*/
public static String getObjectPrefixUrl(String bucket) {
return String.format("%s/%s/", ENDPOINT, bucket);
}
/**
* 创建桶
*
* @param bucket 桶
*/
public static void makeBucket(String bucket) throws Exception {
MinioClient client = MinioClient.builder().endpoint(ENDPOINT).credentials(ACCESS_KEY, SECRET_KEY).build();
// 判断桶是否存在
boolean isExist = client.bucketExists(BucketExistsArgs.builder().bucket(bucket).build());
if (!isExist) {
// 新建桶
client.makeBucket(MakeBucketArgs.builder().bucket(bucket).build());
}
}
/**
* 更新桶权限策略
*
* @param bucket 桶
* @param policy 权限
*/
public static void setBucketPolicy(String bucket, String policy) throws Exception {
MinioClient client = MinioClient.builder().endpoint(ENDPOINT).credentials(ACCESS_KEY, SECRET_KEY).build();
switch (policy) {
case "read-only":
client.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(bucket).config(READ_ONLY.replace(BUCKET_PARAM, bucket)).build());
break;
case "write-only":
client.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(bucket).config(WRITE_ONLY.replace(BUCKET_PARAM, bucket)).build());
break;
case "read-write":
client.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(bucket).config(READ_WRITE.replace(BUCKET_PARAM, bucket)).build());
break;
case "none":
default:
break;
}
}
/**
* 上传本地文件
*
* @param bucket 桶
* @param objectKey 文件key
* @param filePath 文件路径
* @return 文件url
*/
public static String uploadFile(String bucket, String objectKey, String filePath) throws Exception {
MinioClient client = MinioClient.builder().endpoint(ENDPOINT).credentials(ACCESS_KEY, SECRET_KEY).build();
client.uploadObject(UploadObjectArgs.builder().bucket(bucket).object(objectKey).filename(filePath).contentType("image/png").build());
return getObjectPrefixUrl(bucket) + objectKey;
}
/**
* 流式上传文件
*
* @param bucket 桶
* @param objectKey 文件key
* @param inputStream 文件输入流
* @return 文件url
*/
public static String uploadInputStream(String bucket, String objectKey, InputStream inputStream) throws Exception {
MinioClient client = MinioClient.builder().endpoint(ENDPOINT).credentials(ACCESS_KEY, SECRET_KEY).build();
client.putObject(PutObjectArgs.builder().bucket(bucket).object(objectKey).stream(inputStream, inputStream.available(), -1).contentType("image/png").build());
return getObjectPrefixUrl(bucket) + objectKey;
}
/**
* 下载文件
*
* @param bucket 桶
* @param objectKey 文件key
* @return 文件流
*/
public static InputStream download(String bucket, String objectKey) throws Exception {
MinioClient client = MinioClient.builder().endpoint(ENDPOINT).credentials(ACCESS_KEY, SECRET_KEY).build();
return client.getObject(GetObjectArgs.builder().bucket(bucket).object(objectKey).build());
}
/**
* 文件复制
*
* @param sourceBucket 源桶
* @param sourceObjectKey 源文件key
* @param bucket 桶
* @param objectKey 文件key
* @return 新文件url
*/
public static String copyFile(String sourceBucket, String sourceObjectKey, String bucket, String objectKey) throws Exception {
MinioClient client = MinioClient.builder().endpoint(ENDPOINT).credentials(ACCESS_KEY, SECRET_KEY).build();
CopySource source = CopySource.builder().bucket(sourceBucket).object(sourceObjectKey).build();
client.copyObject(CopyObjectArgs.builder().bucket(bucket).object(objectKey).source(source).build());
return getObjectPrefixUrl(bucket) + objectKey;
}
/**
* 删除文件
*
* @param bucket 桶
* @param objectKey 文件key
*/
public static void deleteFile(String bucket, String objectKey) throws Exception {
MinioClient client = MinioClient.builder().endpoint(ENDPOINT).credentials(ACCESS_KEY, SECRET_KEY).build();
client.removeObject(RemoveObjectArgs.builder().bucket(bucket).object(objectKey).build());
}
/**
* 获取文件签名url
*
* @param bucket 桶
* @param objectKey 文件key
* @param expires 签名有效时间 单位秒
* @return 文件签名地址
*/
public static String getSignedUrl(String bucket, String objectKey, int expires) throws Exception {
MinioClient client = MinioClient.builder().endpoint(ENDPOINT).credentials(ACCESS_KEY, SECRET_KEY).build();
return client.getPresignedObjectUrl(GetPresignedObjectUrlArgs.builder().method(Method.GET).bucket(bucket).object(objectKey).expiry(expires).build());
}
public static void main(String[] args) {
String bucket = "public";
String objectKey = "demo/123.png";
try {
// 创建桶
makeBucket(bucket);
// 设置桶读写权限
setBucketPolicy(bucket, "read-write");
// 上传本地文件
String url1 = uploadFile(bucket, objectKey, "D://123.png");
// 输出 http://127.0.0.1:9000/public/demo/123.png
System.out.println(url1);
// 上传文件流
String url2 = uploadInputStream(bucket, objectKey, new FileInputStream(new File("D://123.png")));
// 输出 http://127.0.0.1:9000/public/demo/123.png
System.out.println(url2);
// 下载文件
InputStream inputStream = download(bucket, objectKey);
// 文件复制
String url3 = copyFile(bucket, objectKey, "test", "test/abc.png");
// 输出 http://127.0.0.1:9000/test/test/abc.png
System.out.println(url3);
// 删除文件
deleteFile("test", "test/abc.png");
// 获取文件签名url
String sign = getSignedUrl(bucket, objectKey, 600);
// 该路径可访问文件五分钟
System.out.println(sign);
} catch (Exception e) {
e.printStackTrace();
}
}
}
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