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# 格式化 Amazon SNS 通知以存储在 Amazon S3 目标中
<a name="firehose-archived-message-format-S3"></a>

以下示例显示了一条发送到 Amazon Simple Storage Service (Amazon S3) 存储桶的 Amazon SNS 通知，其中使用了缩进以增强可读性。

**注意**  
在此示例中，已发布消息的原始消息传输被禁用。禁用原始邮件传输时，Amazon SNS 会将 JSON 元数据添加到消息中，其中包括以下属性：  
`Type`
`MessageId`
`TopicArn`
`Subject`
`Timestamp`
`UnsubscribeURL`
`MessageAttributes`
有关原始消息传输的更多信息，请参阅 [Amazon SNS 原始消息传输](sns-large-payload-raw-message-delivery.md)。

```
{
    "Type": "Notification",
    "MessageId": "719a6bbf-f51b-5320-920f-3385b5e9aa56",
    "TopicArn": "arn:aws:sns:us-east-1:333333333333:my-kinesis-test-topic",     
    "Subject": "My 1st subject",
    "Message": "My 1st body",
    "Timestamp": "2020-11-26T23:48:02.032Z",
    "UnsubscribeURL": "https://sns.us-east-1.amazonaws.com/?Action=Unsubscribe&SubscriptionArn=arn:aws:sns:us-east-1:333333333333:my-kinesis-test-topic:0b410f3c-ee5e-49d8-b59b-3b4aa6d8fcf5",
    "MessageAttributes": {
        "myKey1": {
            "Type": "String",
            "Value": "myValue1"
        },
        "myKey2": {
            "Type": "String",
            "Value": "myValue2"
        }
    }
 }
```

以下示例显示了通过一个传输流发送到同一 Amazon S3 存储桶的三条 SNS 消息。消息进行了缓冲，每条消息之间以换行分隔。

```
{"Type":"Notification","MessageId":"d7d2513e-6126-5d77-bbe2-09042bd0a03a","TopicArn":"arn:aws:sns:us-east-1:333333333333:my-kinesis-test-topic","Subject":"My 1st subject","Message":"My 1st body","Timestamp":"2020-11-27T00:30:46.100Z","UnsubscribeURL":"https://sns.us-east-1.amazonaws.com/?Action=Unsubscribe&SubscriptionArn=arn:aws:sns:us-east-1:313276652360:my-kinesis-test-topic:0b410f3c-ee5e-49d8-b59b-3b4aa6d8fcf5","MessageAttributes":{"myKey1":{"Type":"String","Value":"myValue1"},"myKey2":{"Type":"String","Value":"myValue2"}}}
{"Type":"Notification","MessageId":"0c0696ab-7733-5bfb-b6db-ce913c294d56","TopicArn":"arn:aws:sns:us-east-1:333333333333:my-kinesis-test-topic","Subject":"My 2nd subject","Message":"My 2nd body","Timestamp":"2020-11-27T00:31:22.151Z","UnsubscribeURL":"https://sns.us-east-1.amazonaws.com/?Action=Unsubscribe&SubscriptionArn=arn:aws:sns:us-east-1:313276652360:my-kinesis-test-topic:0b410f3c-ee5e-49d8-b59b-3b4aa6d8fcf5","MessageAttributes":{"myKey1":{"Type":"String","Value":"myValue1"}}}
{"Type":"Notification","MessageId":"816cd54d-8cfa-58ad-91c9-8d77c7d173aa","TopicArn":"arn:aws:sns:us-east-1:333333333333:my-kinesis-test-topic","Subject":"My 3rd subject","Message":"My 3rd body","Timestamp":"2020-11-27T00:31:39.755Z","UnsubscribeURL":"https://sns.us-east-1.amazonaws.com/?Action=Unsubscribe&SubscriptionArn=arn:aws:sns:us-east-1:313276652360:my-kinesis-test-topic:0b410f3c-ee5e-49d8-b59b-3b4aa6d8fcf5"}
```