基于minio在本地做亚马逊AMAZON:AWS S3·云文件存储开发

minio启动 · minioスタット

启动控制台，在minio文件目录下执行(复制以下代码)。
CMDをスタットして、minio目録の中には実行する。(コッピ)

minio.exe --compat --config-dir config server data/data/.minio.sys/config/config.json

文件上传 · ファイルアップロード

//导包
import software.amazon.awssdk.services.s3.S3Client;
import software.amazon.awssdk.services.s3.model.CopyObjectRequest;
import software.amazon.awssdk.services.s3.model.DeleteObjectRequest;
import software.amazon.awssdk.services.s3.model.GetObjectRequest;
import software.amazon.awssdk.services.s3.model.GetObjectResponse;
import software.amazon.awssdk.services.s3.model.PutObjectRequest;
import software.amazon.awssdk.services.s3.model.S3Exception;

@Autowired
private S3Client s3Client;

File file = new File("c:\\test.csv");
try (InputStream inputStream = new FileInputStream(zipFile)) {
	this.fileSave(fileName, inputStream,bucketName);
}
/**
*fileName:文件名 如果桶里面有文件夹，文件名前面带上文件夹 input/fileName
*inputStream:输入流
*bucketName:桶名 例:bucket
*/
public void fileSave(String fileName, InputStream inputStream, String bucketName) throws IOException {
		// S3アップロード
		PutObjectRequest build = PutObjectRequest.builder().bucket(bucketName).key(fileName).build();
		RequestBody fromInputStream = RequestBody.fromBytes(inputStream.readAllBytes());
		s3Client.putObject(build, fromInputStream);
	}

文件删除 · ファイル削除

s3Client.deleteObject(DeleteObjectRequest.builder()
                .bucket(bucketName)
                .key(fileName)
                .build());

文件复制 · ファイルコッピ

/**
* encode:指定的编码格式
* bucketName:桶名
* fileName:文件夹名/文件名
* coypToBucketName:复制到的桶名
* copyTofile:复制的位置 文件夹名/文件夹
*/
String encode = URLEncoder.encode(bucketName + "/" + fileName,
					StandardCharsets.UTF_8.toString());
			CopyObjectRequest copyObjectRequest = CopyObjectRequest.builder().copySource(encode)
					.destinationBucket(coypToBucketName)
					.destinationKey(copyTofile).build();
			s3Client.copyObject(copyObjectRequest);

文件下载 · ファイルダウンロード

//Controller側
public String downloadFile(Model model、HttpServletResponse response,
　　@AuthenticationPrincipal LoginUserDetails userDetails) {
　　fileDownload(fileName, response,bucketName);
　　return null;
　　}
　　
private void fileDownload(String fileName, HttpServletResponse response, String bucketName) throws IOException {
		// ファイルチェック
		Boolean checkObject = S3Utils.s3FileCheck(fileName, bucketName, s3Client);

		// S3側 ファイルがあるの場合は、Downloadする
		if (fileName != null && checkObject) {
			response.setCharacterEncoding("utf-8");
			response.setContentType("application/octet-stream");
			response.setHeader("Content-Disposition", "attachment;fileName=" 
			+URLEncoder.encode(fileName, "UTF-8"));

			// ファイル出力
			ResponseInputStream<GetObjectResponse> object =s3Client
			.getObject(GetObjectRequest.builder()
									   .bucket(bucketName)
									   .key(fileName)
									   .build());
			ServletOutputStream out = response.getOutputStream();
			int len = 0;
			byte[] buffer = new byte[1024];
			while ((len = object.read(buffer)) > 0) {
				out.write(buffer, 0, len);
			}
			out.close();
			object.close();
			log.info("file Download: " + fileName + ",bucket: " + bucketName);
			return;
		}
		// 取得できない場合は、メッセージID：MSKWOI026を設定し、加盟店情報登録画面を表示
		throw new FileNotFoundException("S3 File Not Found.  Bucket: "
		 + bucketName + "  ,FileName: " + fileName);
	}　　

自己写的S3工具类 · S3Utils

import java.util.List;
import java.util.Objects;

import software.amazon.awssdk.core.sync.RequestBody;
import software.amazon.awssdk.services.s3.S3Client;
import software.amazon.awssdk.services.s3.model.Bucket;
import software.amazon.awssdk.services.s3.model.CreateBucketRequest;
import software.amazon.awssdk.services.s3.model.ListObjectsRequest;
import software.amazon.awssdk.services.s3.model.ListObjectsResponse;
import software.amazon.awssdk.services.s3.model.PutObjectRequest;
import software.amazon.awssdk.services.s3.model.S3Object;

public class S3Utils {
    /**
     * S3 File保存Util
     */
    public static void putObjectForReader(String fileName, String bucketName, S3Client s3Client, byte[] readAllBytes) {
        Boolean checkBucket = true;
        // Bucket存在チェック
        List<Bucket> buckets = s3Client.listBuckets()
            .buckets();
        for (Bucket bucket : buckets) {
            if (Objects.equals(bucket.name(), bucketName)) {
                checkBucket = false;
                break;
            }
        }
        if (Boolean.TRUE.equals(checkBucket)) {
            s3Client.createBucket(CreateBucketRequest.builder()
                .bucket(bucketName)
                .build());
        }
        PutObjectRequest putObjectRequest = PutObjectRequest.builder()
            .bucket(bucketName)
            .key(fileName)
            .build();
        RequestBody fromInputStream = RequestBody.fromBytes(readAllBytes);
        s3Client.putObject(putObjectRequest, fromInputStream);
    }

    /**
     * S3ファイルチェッククラス
     * 
     * @param fileName   ファイル名
     * @param bucketName Bucket名
     * @param s3Client   S3
     * @return ファイルある:True なし:False
     */
    public static Boolean s3FileCheck(String fileName, String bucketName, S3Client s3Client) {
        Boolean checkBucket = false;
        Boolean checkObject = false;
        String bucketTempName = null;

        // Bucket存在チェック
        List<Bucket> buckets = s3Client.listBuckets()
            .buckets();
        for (Bucket bucket : buckets) {
            if (Objects.equals(bucket.name(), bucketName)) {
                bucketTempName = bucket.name();
                checkBucket = true;
                break;
            }
        }
        // ファイル存在チェック
        // BucketNameがあるの場合、このBucketの中には相関のファイルを探す
        if (Boolean.TRUE.equals(checkBucket)) {
            ListObjectsRequest listObjectsRequest = ListObjectsRequest.builder()
                .bucket(bucketTempName)
                .build();
            ListObjectsResponse listObjects = s3Client.listObjects(listObjectsRequest);
            List<S3Object> fileList = listObjects.contents();
            for (S3Object s3Object : fileList) {
                if (Objects.equals(s3Object.key(), fileName)) {
                    checkObject = true;
                    break;
                }
            }
        }

        return checkObject;
    }

    private S3Utils() {
    }
}