The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256.

从 issue 中显示的 GeneratePreSignedUrl 示例开始，针对报告的 S3 bucket 重现生成的 URL。检查 AWS SDK for Java 对 presigned request 和授权的处理行为，然后验证该示例是否使用所需的授权机制生成一个被 S3 接受的 URL。完成的标准是报告的错误不再发生，或者该示例明确记录受支持的配置。

Below Sample returns subjected error, using latest version of java sdk

package com.amazonaws.samples;

import java.io.IOException;
import java.net.URL;

import com.amazonaws.AmazonClientException;
import com.amazonaws.AmazonServiceException;
import com.amazonaws.HttpMethod;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3Client;
import com.amazonaws.services.s3.model.GeneratePresignedUrlRequest;

public class GeneratePreSignedUrl {
private static String bucketName = "bucketforwso2";
private static String objectKey = "/HTML-CHEAT-SHEET-768x8555.pdf";

public static void main(String[] args) throws IOException {
	@SuppressWarnings("deprecation")
	AmazonS3 s3client = new AmazonS3Client(new ProfileCredentialsProvider());

	try {
		System.out.println("Generating pre-signed URL.");
		java.util.Date expiration = new java.util.Date();
		long milliSeconds = expiration.getTime();
		milliSeconds += 1000 * 60 * 60; // Add 1 hour.
		expiration.setTime(milliSeconds);

		GeneratePresignedUrlRequest generatePresignedUrlRequest = 
			    new GeneratePresignedUrlRequest(bucketName, objectKey);
		generatePresignedUrlRequest.setMethod(HttpMethod.GET); 
		generatePresignedUrlRequest.setExpiration(expiration);

		URL url = s3client.generatePresignedUrl(generatePresignedUrlRequest); 

		System.out.println("Pre-Signed URL = " + url.toString());
	} catch (AmazonServiceException exception) {
		System.out.println("Caught an AmazonServiceException, " +
				"which means your request made it " +
				"to Amazon S3, but was rejected with an error response " +
		"for some reason.");
		System.out.println("Error Message: " + exception.getMessage());
		System.out.println("HTTP  Code: "    + exception.getStatusCode());
		System.out.println("AWS Error Code:" + exception.getErrorCode());
		System.out.println("Error Type:    " + exception.getErrorType());
		System.out.println("Request ID:    " + exception.getRequestId());
	} catch (AmazonClientException ace) {
		System.out.println("Caught an AmazonClientException, " +
				"which means the client encountered " +
				"an internal error while trying to communicate" +
				" with S3, " +
		"such as not being able to access the network.");
		System.out.println("Error Message: " + ace.getMessage());
	}
}

}

Generating pre-signed URL.
Pre-Signed URL = https://bucketforwso2.s3.amazonaws.com/%2FHTML-CHEAT-SHEET-768x8555.pdf?AWSAccessKeyId=AKIAJH5K4ZJ6ZQB2F4XB&Expires=1514962084&Signature=rY7RjDwJkck8ZCEGWUr4lSm%2Bkuw%3D

InvalidRequest The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256. 2947D4830B323D3A 4JK5mlUk/a7oOd6WJT5ol5X0prJY+0buLKr9zhnOcoz0mxAk/oc9A/nWHgIC8lggT11xneCtRLU=