Springboot整合AWS s3 存储

依赖

  <!--aws s3-->
        <dependency>
            <groupId>com.amazonaws</groupId>
            <artifactId>aws-java-sdk-s3</artifactId>
        </dependency>


        <aws.s3.version>1.11.543</aws.s3.version>

Aws yaml 配置

amazon:
  aws:
    access-key-id: AKIAT
    access-key-secret: Tv7Ck
  s3:
    default-bucket: 
    region: 
    endpoint: https://.com/

Config

import com.amazonaws.auth.AWSCredentials;
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 org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;

/**
 * ClassName AwsConfig
 *
 * @author wang
 * Date 2022/6/23 10:19
 */
@Configuration
@Component
public class AwsConfig {

    @Value("${amazon.aws.access-key-id}")
    private String accessKey;
    @Value("${amazon.aws.access-key-secret}")
    private String secretKey;
    @Value("${amazon.s3.region}")
    private String region;

    @Bean
    public AmazonS3 s3Client() {
        AWSCredentials credentials = new BasicAWSCredentials(this.accessKey, this.secretKey);
        return AmazonS3ClientBuilder.standard()
                .withRegion(Regions.fromName(region))
                .withCredentials(new AWSStaticCredentialsProvider(credentials))
                .build();

    }

}

service

import cn.hutool.core.util.IdUtil;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.model.*;
import lombok.RequiredArgsConstructor;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.*;
import java.util.Date;

/**
 * ClassName AwsSysFileServiceImpl
 *
 * @author wang
 * Date 2022/6/23 10:11
 */
@Service
@RequiredArgsConstructor
public class AwsSysFileService {

    final AmazonS3 s3Client;

    @Value("${amazon.aws.access-key-id}")
    private String accessKey;
    @Value("${amazon.s3.default-bucket}")
    private String bucketName;
    @Value("${amazon.s3.endpoint}")
    private String endpoint;
    @Value("${spring.profiles.active}")
    private String env;


    public String uploadFile(MultipartFile multipartFile, String source) throws IOException {
        String originalFilename = multipartFile.getOriginalFilename();
        assert originalFilename != null;
        FileTypeUtils.checkFileType(originalFilename);
        String fileName = this.generateFileName(originalFilename);
        File file = this.convertMultiPartToFile(multipartFile);
        String filePath = bucketName + "/" + "test" + "/"+ source + "/" + SDFFactory.DATE_DASH.format(new Date());
        this.uploadFileToS3bucket(filePath, fileName, file);
        file.delete();
        return endpoint + filePath + "/" + fileName;
    }

    /**
     * 创建临时文件
     *
     * @param multipartFile
     * @return
     * @throws IOException
     */
    private File convertMultiPartToFile(MultipartFile multipartFile) throws IOException {
        // 获取文件名
        String fileName = multipartFile.getOriginalFilename();
        // 获取文件后缀
        assert fileName != null;
        String prefix = fileName.substring(fileName.lastIndexOf("."));
        // 用uuid作为文件名，防止生成的临时文件重复
        File excelFile = File.createTempFile(IdUtil.randomUUID(), prefix);
        // MultipartFile to File
        multipartFile.transferTo(excelFile);
        return excelFile;
    }

    private String generateFileName(String originalFilename) {
        return System.currentTimeMillis() + "-" + originalFilename.replace(" ", "_");
    }

    private void uploadFileToS3bucket(String filePath, String fileName, File file) {
        s3Client.putObject(new PutObjectRequest(filePath, fileName, file)
                .withCannedAcl(CannedAccessControlList.PublicRead));
    }

    public void deleteFileFromS3Bucket(String fileUrl) {
        String fileName = fileUrl.replaceAll(endpoint, "");
        s3Client.deleteObject(new DeleteObjectRequest(bucketName, fileName));
    }

    public void downloadFile(String fileUrl) throws IOException {
        ResponseHeaderOverrides headerOverrides = new ResponseHeaderOverrides()
                .withCacheControl("No-cache")
                .withContentDisposition("attachment; filename=example.txt");
        GetObjectRequest getObjectRequestHeaderOverride = new GetObjectRequest(fileUrl, accessKey)
                .withResponseHeaders(headerOverrides);
        S3Object headerOverrideObject = s3Client.getObject(getObjectRequestHeaderOverride);
        displayTextInputStream(headerOverrideObject.getObjectContent());
    }


    private void displayTextInputStream(InputStream input) throws IOException {
        // Read the text input stream one line at a time and display each line.
        BufferedReader reader = new BufferedReader(new InputStreamReader(input));
        String line = null;
        while ((line = reader.readLine()) != null) {
            System.out.println(line);
        }
        System.out.println();
    }


}