AmazonS3对象存储实现增删查

import com.amazonaws.AmazonServiceException;
import com.amazonaws.SdkClientException;
import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.client.builder.AwsClientBuilder;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import com.amazonaws.services.s3.model.*;
 
import java.io.File;
 
/**
 * 工具类：S3服务器中文件上传、删除操作（用来存储jmeter脚本中参数化文件）
 */
public class AwsS3Utils {
    private static org.apache.logging.log4j.Logger logger;
    private static final String FILE_TYPE = "fileType";
    
    //隐私信息已模糊处理（keyID、key、endpoint、bucket）
    /**
     * keyID
     */
    private static String accessKeyID = "*************";
 
    /**
     * key
     */
    private static String secretKey = "************************";
 
    /**
     * endpoint
     */
    private static String endpoint = "https://xxx.b.xxxxx.cn:443/";
 
    /**
     * default bucket
     */
    private static String defaultBucket = "xxxxxxxx";
    /**
     * 向 AWS 客户端明确提供凭证
     */
    private static final BasicAWSCredentials AWS_CREDENTIALS = new BasicAWSCredentials(accessKeyID, secretKey);
 
    /**
     * s3 客户端
     */
    private static final AmazonS3 S3 = AmazonS3ClientBuilder.standard()
            .withCredentials(new AWSStaticCredentialsProvider(AWS_CREDENTIALS))
            .withEndpointConfiguration(new AwsClientBuilder.EndpointConfiguration(endpoint, ""))
            .build();
 
    /**
     * 存放文件至s3
     *
     * @param bucketName 桶名称 AmazonS3BucketConstant
     * @param key        key名称
     * @param file       文件
     * @return PutObjectResult
     */
    public static PutObjectResult putFile(String bucketName, String key, File file) {
        long startMillis = System.currentTimeMillis();
        long endMillis;
        PutObjectResult result = null;
        try {
            PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, key, file);
            String name = file.getName();
            //新增文件目录 performanceFile
            // 记录文件类型
            ObjectMetadata metadata = new ObjectMetadata();
            metadata.addUserMetadata(FILE_TYPE, name.substring(name.lastIndexOf(".") + 1));
            putObjectRequest.setMetadata(metadata);
            result = S3.putObject(putObjectRequest);
            endMillis = System.currentTimeMillis();
        } catch (AmazonServiceException e) {
            endMillis = System.currentTimeMillis();
        } catch (SdkClientException e) {
            // Amazon S3 couldn't be contacted for a response, or the client
            // couldn't parse the response from Amazon S3.
 
        }
        return result;
    }
 
    /**
     * 根据文件名称进行删除
     * @param bucketName
     * @param key
     * @return
     */
    public static void delFile(String bucketName, String key){
        if(S3.doesBucketExistV2(bucketName)==false){
            logger.info(bucketName+"不存在");
            return ;
        }
 
        //根据桶名及文件夹名获取该桶该文件夹操作对象
        ListObjectsRequest lor = new ListObjectsRequest().withBucketName(defaultBucket).withPrefix("perfFile/");
        ObjectListing objectListing = S3.listObjects(lor);
 
        String str_key = null;
 
        //根据操作对象列出所有文件对象,单个对象使用objectSummary.getKey()即可获取此文件完整路径，配合桶名可以用于操作
        for(S3ObjectSummary objectSummary : objectListing.getObjectSummaries()){
            str_key = objectSummary.getKey();
            //文件名是否匹配
            if(str_key.matches(key)){
                //根据桶名及key信息进行删除
                S3.deleteObject(bucketName,key);
                break;
            }
        }
    }
 
    public static void delFiles(String key){
          delFile(defaultBucket,key);
    }
 
    public static PutObjectResult putFile(String key, File file) {
        return putFile(defaultBucket, key, file);
    }
 
    /**
     * 读取文件
     * @param bucketName 桶名称 AmazonS3BucketConstant
     * @param key        key名称
     * @return S3Object: s3Object.getBucketName(); s3Object.getKey(); InputStream inputStream = s3Object.getObjectContent()...
     * 务必关闭 S3Object:     s3Object.close();
     */
    public static S3Object getFile(String bucketName, String key) {
        long startMillis = System.currentTimeMillis();
        long endMillis;
        S3Object s3Object = null;
        try {
            s3Object = S3.getObject(bucketName, key);
            endMillis = System.currentTimeMillis();
        } catch (AmazonServiceException e) {
            endMillis = System.currentTimeMillis();
        } catch (SdkClientException e) {
            // Amazon S3 couldn't be contacted for a response, or the client
            // couldn't parse the response from Amazon S3.
        }
        return s3Object;
    }
    public static S3Object getFile(String key) {
        return getFile(defaultBucket, key);
    }
}