【Java-S3】使用Java操作S3-SDK，实现获取S3文件大小

短命女 2023-10-15 16:58 73阅读 0赞

*  Maven依赖

<dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>software.amazon.awssdk</groupId>
                <artifactId>bom</artifactId>
                <version>2.20.45</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    
    <dependencies>
    		<-- 核心依赖 -->
            <dependency>
                <groupId>com.amazonaws</groupId>
                <artifactId>aws-java-sdk-s3</artifactId>
                <version>1.11.490</version>
            </dependency>
            
            <dependency>
                <groupId>org.junit.jupiter</groupId>
                <artifactId>junit-jupiter-api</artifactId>
                <version>5.9.2</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>software.amazon.awssdk</groupId>
                <artifactId>secretsmanager</artifactId>
            </dependency>
            <dependency>
                <groupId>com.google.code.gson</groupId>
                <artifactId>gson</artifactId>
                <version>2.10.1</version>
            </dependency>
            <dependency>
                <groupId>org.junit.jupiter</groupId>
                <artifactId>junit-jupiter-engine</artifactId>
                <version>5.9.2</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-databind</artifactId>
                <version>2.14.2</version>
            </dependency>
            <dependency>
                <groupId>org.junit.platform</groupId>
                <artifactId>junit-platform-commons</artifactId>
                <version>1.9.2</version>
            </dependency>
            <dependency>
                <groupId>org.junit.platform</groupId>
                <artifactId>junit-platform-launcher</artifactId>
                <version>1.9.2</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>software.amazon.awssdk</groupId>
                <artifactId>s3</artifactId>
            </dependency>
            <dependency>
                <groupId>software.amazon.awssdk</groupId>
                <artifactId>s3-transfer-manager</artifactId>
                <version>2.20.26</version>
            </dependency>
            <dependency>
                <groupId>software.amazon.awssdk</groupId>
                <artifactId>kms</artifactId>
            </dependency>
            <dependency>
                <groupId>software.amazon.awssdk</groupId>
                <artifactId>s3control</artifactId>
            </dependency>
            <dependency>
                <groupId>org.apache.logging.log4j</groupId>
                <artifactId>log4j-api</artifactId>
                <version>2.20.0</version>
            </dependency>
        </dependencies>
    
    <build>
        <plugins>
            
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>${java.version}</source>
                    <target>${java.version}</target>
                </configuration>
            </plugin>
    
            
            
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>3.0.0</version>
                <executions>
                    
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <artifactSet>
                                <excludes>
                                    <exclude>org.apache.flink:force-shading</exclude>
                                    <exclude>com.google.code.findbugs:jsr305</exclude>
                                    <exclude>org.slf4j:*</exclude>
                                    <exclude>org.apache.logging.log4j:*</exclude>
                                </excludes>
                            </artifactSet>
                            <filters>
                                <filter>
                                    
                                    <artifact>*:*</artifact>
                                    <excludes>
                                        <exclude>META-INF/*.SF</exclude>
                                        <exclude>META-INF/*.DSA</exclude>
                                        <exclude>META-INF/*.RSA</exclude>
                                    </excludes>
                                </filter>
                            </filters>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
    
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.22.1</version>
                <configuration>
                    <groups>IntegrationTest</groups>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>${java.version}</source>
                    <target>${java.version}</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.22.1</version>
            </plugin>
        </plugins>
    </build>

*  S3Utils工具类

package gaei.cn.x5l.x5lhive2cos.utils;
    
    import com.amazonaws.ClientConfiguration;
    import com.amazonaws.Protocol;
    import com.amazonaws.auth.AWSCredentials;
    import com.amazonaws.auth.AWSCredentialsProvider;
    import com.amazonaws.auth.AWSStaticCredentialsProvider;
    import com.amazonaws.auth.BasicAWSCredentials;
    import com.amazonaws.client.builder.AwsClientBuilder;
    import com.amazonaws.regions.Regions;
    import com.amazonaws.services.s3.AmazonS3;
    import com.amazonaws.services.s3.AmazonS3Client;
    import com.amazonaws.services.s3.model.ObjectListing;
    import com.amazonaws.services.s3.model.S3ObjectSummary;
    import software.amazon.awssdk.auth.credentials.AwsBasicCredentials;
    import software.amazon.awssdk.auth.credentials.AwsCredentials;
    import software.amazon.awssdk.auth.credentials.AwsCredentialsProvider;
    import software.amazon.awssdk.auth.credentials.AwsCredentialsProviderChain;
    import software.amazon.awssdk.regions.Region;
    import software.amazon.awssdk.services.s3.S3Client;
    import software.amazon.awssdk.services.s3.model.ListObjectsRequest;
    import software.amazon.awssdk.services.s3.model.ListObjectsResponse;
    import software.amazon.awssdk.services.s3.model.S3Exception;
    import software.amazon.awssdk.services.s3.model.S3Object;
    
    import java.util.ArrayList;
    import java.util.List;
    
    public class S3Utils {
        
        /**
         * 我是通过构造器实现s3的初始化，
         * 可以根据实际的场景和需求修改初始化的方式
         */
        private static String accessKey = "*******************";
        private static String secretKey = "**************************************";
        private static String serviceEndpoint = "192.168.1.1";
        private static String bucketName = "bucket-name";
        private static AmazonS3 s3 = AmazonS3Util();
    
        public static AmazonS3 AmazonS3Util() {
        
            ClientConfiguration config = new ClientConfiguration();
            config.setProtocol(Protocol.HTTP);
            AwsClientBuilder.EndpointConfiguration endpointConfig =
                    new AwsClientBuilder.EndpointConfiguration(serviceEndpoint, Regions.CN_NORTH_1.getName());
            AWSCredentials awsCredentials = new BasicAWSCredentials(accessKey, secretKey);
            AWSCredentialsProvider awsCredentialsProvider = new AWSStaticCredentialsProvider(awsCredentials);
            s3 = AmazonS3Client.builder()
                    .withEndpointConfiguration(endpointConfig)
                    .withClientConfiguration(config)
                    .withCredentials(awsCredentialsProvider)
                    .disableChunkedEncoding()
                    .withPathStyleAccessEnabled(true)
                    .build();
    
            return s3;
        }
    
        /**
         * 获取bucket中所有文件
         * 此处我是写了一个统一的bucket，可以根据实际需要，修改为传参等方式
         */
        public static long getS3SampleDateSize(String s3PartPath) {
        
    
            long dataSize = 0L;
            List<S3ObjectSummary> objects = new ArrayList<S3ObjectSummary>();
            ObjectListing result = s3.listObjects(bucketName, s3PartPath);
            objects.addAll(result.getObjectSummaries());
    
            while (result.isTruncated()) {
        
                result = s3.listNextBatchOfObjects(result);
                objects.addAll(result.getObjectSummaries());
            }
            for (S3ObjectSummary os : objects) {
        
                dataSize += os.getSize();
            }
    
            return dataSize;
        }
    }

**其他参考：**

中文官网：

`https://docs.aws.amazon.com/zh_cn/AmazonS3/latest/userguide/example_s3_ListObjects_section.html`

github代码示例：

`https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/`