java AWS 上传 中文文件 设置文件编码

为UTF-8的方法是什么？

您可以使用以下Java代码将文件上传到AWS S3，并设置文件编码为UTF-8：

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;

import com.amazonaws.AmazonServiceException;
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 com.amazonaws.services.s3.model.ObjectMetadata;
import com.amazonaws.services.s3.model.PutObjectRequest;

public class S3Uploader {
    private static final String BUCKET_NAME = "your-bucket-name";
    private static final String ACCESS_KEY = "your-access-key";
    private static final String SECRET_KEY = "your-secret-key";

    public static void main(String[] args) {
        BasicAWSCredentials awsCreds = new BasicAWSCredentials(ACCESS_KEY, SECRET_KEY);
        AmazonS3 s3Client = AmazonS3ClientBuilder.standard()
                .withCredentials(new AWSStaticCredentialsProvider(awsCreds))
                .withRegion(Regions.DEFAULT_REGION)
                .build();

        String filePath = "path/to/your/file.txt";
        String keyName = "your-file-name.txt";
        File file = new File(filePath);

        try (InputStream inputStream = new FileInputStream(file)) {
            ObjectMetadata objectMetadata = new ObjectMetadata();
            objectMetadata.setContentEncoding(StandardCharsets.UTF_8.toString());
            objectMetadata.setContentType("text/plain");
            objectMetadata.setContentLength(file.length());
            PutObjectRequest request = new PutObjectRequest(BUCKET_NAME, keyName, inputStream, objectMetadata);
            s3Client.putObject(request);
        } catch (AmazonServiceException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

在这个例子中，我们使用AWS SDK for Java V2将一个文件上传到AWS S3，设置文件编码为UTF-8，并设置文件的Content-Type为"text/plain"。您可以在ObjectMetadata对象中设置其他自定义元数据。