使用Amazon S3 SDK的GetObjectRequest中的ResponseHeaderOverrides属性来设置链接的过期时间。

示例代码：

import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.Headers;
import com.amazonaws.services.s3.model.GetObjectRequest;

public class S3LinkExpireExample {
    
    private static final long EXPIRATION_TIME = 3600; // Link will expire in 1 hour
    
    public static void main(String[] args) {
        
        AmazonS3 s3Client = new AmazonS3Client();
        String bucketName = "myBucket";
        String keyName = "myObjectKey";
        
        GetObjectRequest request = new GetObjectRequest(bucketName, keyName);
        request.setResponseHeaders(Headers.EXPIRES, "" + System.currentTimeMillis() / 1000 + EXPIRATION_TIME);
        
        // Now use the request object as before
        // ...
    }
}