com.amazonaws.services.s3.model.AmazonS3Exception: User key must be specified. (Service: Amazon S3; Status Code: 400;
at com.amazonaws.http.AmazonHttpClient.handleErrorResponse(AmazonHttpClient.java:1160)
at com.amazonaws.http.AmazonHttpClient.executeOneRequest(AmazonHttpClient.java:748)
at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:467)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:302)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:3769)
at com.amazonaws.services.s3.AmazonS3Client.deleteObjects(AmazonS3Client.java:1841)
代码如下所示：
client.deleteObjects(new DeleteObjectsRequest(bucketName).withKeys(keys.toArray(new String[urls.length]))
访问/密钥设置正确。
是什么user key?
什么是用户密钥？
Ans:
用户密钥是用户获取凭证的密钥。It verifies who you are and whether you have permission to access the resources that you are requesting。用户安全凭证有Access Key ID and Secret Access Key.
您必须将密钥存储在安全的位置。你的秘钥不会
不再可以通过 AWS 管理控制台使用；你将会拥有
唯一的副本。为了保护您的帐户，请保密，
并且永远不要通过电子邮件发送。不要在组织外部共享它，即使
询问似乎来自 AWS 或 Amazon.com。没有人合法地
代表亚马逊将永远向您询问您的密钥。
了解更多：http://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSGettingStartedGuide/AWSCredentials.html http://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSGettingStartedGuide/AWSCredentials.html
Your client.deleteObjects(....);方法具有使用数组进行处理的键。但ArrayList下面用于删除对象proper exception handling.
删除多个对象（版本启用的存储桶）
- 创建一个实例
AmazonS3Client class.
-
创建一个实例DeleteObjectsRequest类并提供list of objects keys以及对象的版本 ID（可选）
您要删除的内容。
如果指定要删除的对象的版本 ID，Amazon S3 deletes the specific object version。如果不指定要删除的对象的版本 ID，Amazon S3 adds a delete marker。有关更多信息，请参阅每个请求删除一个对象 http://docs.aws.amazon.com/AmazonS3/latest/dev/DeletingOneObject.html.
- 执行
AmazonS3Client.deleteObjects method.
以下 Java 代码示例演示了前面的步骤。
List<KeyVersion> keys = new ArrayList<KeyVersion>();
// Provide a list of object keys and versions.
DeleteObjectsRequest multiObjectDeleteRequest = new DeleteObjectsRequest(bucketName)
.withKeys(keys);
try {
DeleteObjectsResult delObjRes = s3Client.deleteObjects(multiObjectDeleteRequest);
System.out.format("Successfully deleted all the %s items.\n", delObjRes.getDeletedObjects().size());
} catch (MultiObjectDeleteException e) {
// Process exception.
}
对于多对象删除（非版本化存储桶），您可以使用此方法
还
static void multiObjectNonVersionedDelete(List<KeyVersion> keys) {
// Multi-object delete by specifying only keys (no version ID).
DeleteObjectsRequest multiObjectDeleteRequest = new DeleteObjectsRequest(
bucketName).withQuiet(false);
// Create request that include only object key names.
List<KeyVersion> justKeys = new ArrayList<KeyVersion>();
for (KeyVersion key : keys) {
justKeys.add(new KeyVersion(key.getKey()));
}
multiObjectDeleteRequest.setKeys(justKeys);
// Execute DeleteObjects - Amazon S3 add delete marker for each object
// deletion. The objects no disappear from your bucket (verify).
DeleteObjectsResult delObjRes = null;
try {
delObjRes = s3Client.deleteObjects(multiObjectDeleteRequest);
System.out.format("Successfully deleted all the %s items.\n", delObjRes.getDeletedObjects().size());
} catch (MultiObjectDeleteException mode) {
printDeleteResults(mode);
}
}
有关示例的详细信息，您可以按照教程进行操作
- 使用适用于 Java 的 AWS 开发工具包删除多个对象 http://docs.aws.amazon.com/AmazonS3/latest/dev/DeletingMultipleObjectsUsingJava.html
- 使用适用于 Java 的 AWS 开发工具包删除对象 http://docs.aws.amazon.com/AmazonS3/latest/dev/DeletingOneObjectUsingJava.html
- 删除对象 http://docs.aws.amazon.com/AmazonS3/latest/dev/DeletingObjects.html
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