SpringBoot对接AWS S3实现上传和查询

cloud.aws.credentials.access-key=YOUR_ACCESS_KEY
cloud.aws.credentials.secret-key=YOUR_SECRET_KEY

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>springboot-demo</artifactId>
        <groupId>com.et</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>aws-s3</artifactId>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-autoconfigure</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.amazonaws</groupId>
            <artifactId>aws-java-sdk-s3</artifactId>
            <version>1.12.300</version> <!-- 请根据需要选择合适的版本 -->
        </dependency>
    </dependencies>
</project>

cloud.aws.credentials.access-key=xxxx
cloud.aws.credentials.secret-key=xxxx
cloud.aws.region.static=xxx
cloud.aws.s3.bucket=xxx
proxy.host=127.0.0.1
proxy.port=1080

package com.et.aws.config;

import com.amazonaws.ClientConfiguration;
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 org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.net.InetSocketAddress;
import java.net.Proxy;

@Configuration
public class S3Config {

    @Value("${cloud.aws.credentials.access-key}")
    private String accessKey;

    @Value("${cloud.aws.credentials.secret-key}")
    private String secretKey;

    @Value("${cloud.aws.region.static}")
    private String region;

    @Value("${proxy.host:}") // 代理主机
    private String proxyHost;

    @Value("${proxy.port:}") // 代理端口
    private int proxyPort;

    @Bean
    public AmazonS3 amazonS3() {
        BasicAWSCredentials awsCredentials = new BasicAWSCredentials(accessKey, secretKey);

        AmazonS3ClientBuilder builder = AmazonS3ClientBuilder.standard()
                .withRegion(region)
                .withCredentials(new AWSStaticCredentialsProvider(awsCredentials));

        // 如果代理主机和端口不为空，则配置代理
        if (!proxyHost.isEmpty() && proxyPort > 0) {
            Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(proxyHost, proxyPort));
            builder.withClientConfiguration(new ClientConfiguration().withProxyHost(proxyHost).withProxyPort(proxyPort));
        }

        return builder.build();
    }
}

package com.et.aws.service;

import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.model.ObjectListing;
import com.amazonaws.services.s3.model.S3ObjectSummary;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

@Service
public class S3Service {

    @Autowired
    private AmazonS3 amazonS3;

    @Value("${cloud.aws.s3.bucket}")
    private String bucketName;

    public String uploadFile(MultipartFile file) throws IOException {
        String fileName = file.getOriginalFilename();
        InputStream inputStream = file.getInputStream();
        amazonS3.putObject(bucketName, fileName, inputStream, null);
        return fileName;
    }

    public List<String> listFiles() {
        ObjectListing objectListing = amazonS3.listObjects(bucketName);
        List<String> fileNames = new ArrayList<>();
        for (S3ObjectSummary objectSummary : objectListing.getObjectSummaries()) {
            fileNames.add(objectSummary.getKey());
        }
        return fileNames;
    }
}

package com.et.aws.controller;

import com.et.aws.service.S3Service;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.util.List;

@RestController
@RequestMapping("/api/s3")
public class S3Controller {

    @Autowired
    private S3Service s3Service;

    @PostMapping("/upload")
    public ResponseEntity<String> uploadFile(@RequestParam("file") MultipartFile file) {
        try {
            String fileName = s3Service.uploadFile(file);
            return ResponseEntity.ok("File uploaded: " + fileName);
        } catch (IOException e) {
            return ResponseEntity.status(500).body("File upload failed: " + e.getMessage());
        }
    }

    @GetMapping("/files")
    public ResponseEntity<List<String>> listFiles() {
        List<String> files = s3Service.listFiles();
        return ResponseEntity.ok(files);
    }
}