即使我将内容类型设置为text / html,它在S3上最终作为应用程序/八位字节流.
ByteArrayInputStream contentsAsStream = new ByteArrayInputStream(contentAsBytes); ObjectMetadata md = new ObjectMetadata(); md.setContentLength(contentAsBytes.length); md.setContentType("text/html"); s3.putObject(new PutObjectRequest(ARTIST_BUCKET_NAME,artistId,contentsAsStream,md));
然而,如果我命名该文件,以最终为.html
s3.putObject(new PutObjectRequest(ARTIST_BUCKET_NAME,artistId + ".html",md));
那么它工作.
我的md对象是否被忽略？如何随着时间的推移,我需要上传数千个文件,所以不能进入S3 UI并手动修复contentType.
解决方法
您必须在代码中执行其他操作.我刚刚尝试使用1.9.6 S3 SDK的代码示例,该文件获取“text / html”内容类型.
以下是确切的(Groovy)代码：
class S3Test {
static void main(String[] args) {
def s3 = new AmazonS3Client()
def random = new Random()
def bucketName = "raniz-playground"
def keyName = "content-type-test"
byte[] contentAsBytes = new byte[1024]
random.nextBytes(contentAsBytes)
ByteArrayInputStream contentsAsStream = new ByteArrayInputStream(contentAsBytes);
ObjectMetadata md = new ObjectMetadata();
md.setContentLength(contentAsBytes.length);
md.setContentType("text/html");
s3.putObject(new PutObjectRequest(bucketName,keyName,md))
def object = s3.getObject(bucketName,keyName)
println(object.objectMetadata.contentType)
object.close()
}
}
程序打印
text/html
而S3元数据也是一样的：
以下是通过网络发送的通信(由Apache HTTP Commons调试日志提供)：
>> PUT /content-type-test HTTP/1.1 >> Host: raniz-playground.s3.amazonaws.com >> Authorization: AWS <nope> >> User-Agent: aws-sdk-java/1.9.6 Linux/3.2.0-84-generic Java_HotSpot(TM)_64-Bit_Server_VM/25.45-b02/1.8.0_45 >> Date: Fri,12 Jun 2015 02:11:16 GMT >> Content-Type: text/html >> Content-Length: 1024 >> Connection: Keep-Alive >> Expect: 100-continue << HTTP/1.1 200 OK << x-amz-id-2: mOsmhYGkW+SxipF6S2+CnmiqOhwJ62WfWUkmZk4zU3rzkWCEH9P/bT1hUz27apmO << x-amz-request-id: 8706AE3BE8597644 << Date: Fri,12 Jun 2015 02:11:23 GMT << ETag: "6c53debeb28f1d12f7ad388b27c9036d" << Content-Length: 0 << Server: AmazonS3 >> GET /content-type-test HTTP/1.1 >> Host: raniz-playground.s3.amazonaws.com >> Authorization: AWS <nope> >> User-Agent: aws-sdk-java/1.9.6 Linux/3.2.0-84-generic Java_HotSpot(TM)_64-Bit_Server_VM/25.45-b02/1.8.0_45 >> Date: Fri,12 Jun 2015 02:11:23 GMT >> Content-Type: application/x-www-form-urlencoded; charset=utf-8 >> Connection: Keep-Alive << HTTP/1.1 200 OK << x-amz-id-2: 9U1CQ8yIYBKYyadKi4syaAsr+7BV76Q+5UAGj2w1zDiPC2qZN0NzUCQNv6pWGu7n << x-amz-request-id: 6777433366DB6436 << Date: Fri,12 Jun 2015 02:11:24 GMT << Last-Modified: Fri,12 Jun 2015 02:11:23 GMT << ETag: "6c53debeb28f1d12f7ad388b27c9036d" << Accept-Ranges: bytes << Content-Type: text/html << Content-Length: 1024 << Server: AmazonS3
这也是source code显示我们的行为 – 如果您设置内容类型,SDK将不会覆盖它.
