AmazonClientException：读取的数据多于预期

Question

当我尝试将对象添加到s3时，它给出AmazonClientException: Data read has a different length than the expected。

但是问题是预期的长度显示比实际大小大32位。

例如：5076681字节是磁盘上的实际大小。但是我们得到一个例外，说预期为5076713。

 HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        InputStream in = connection.getInputStream();
        ObjectMetadata metadata = new ObjectMetadata();
        //adding metadata content length along with request
        metadata.setContentLength(contentLengthParam);
        PutObjectRequest putObjectRequest = new PutObjectRequest("Bucket", "fileName", in, metadata)
                .withCannedAcl(CannedAccessControlList.PublicRead);
        PutObjectResult result = s3AwsClient.putObject(putObjectRequest);

我得到的例外：

com.amazonaws.AmazonClientException: More data read than expected: dataLength=5076713; expectedLength=5076681; includeSkipped=false; in.getClass()=class com.amazonaws.internal.ReleasableInputStream; markedSupported=false; marked=0; resetSinceLastMarked=false; markCount=0; resetCount=0
com.amazonaws.util.LengthCheckInputStream.checkLength(LengthCheckInputStream.java:156)
com.amazonaws.util.LengthCheckInputStream.read(LengthCheckInputStream.java:110)
com.amazonaws.internal.SdkFilterInputStream.read(SdkFilterInputStream.java:72)
com.amazonaws.services.s3.internal.MD5DigestCalculatingInputStream.read(MD5DigestCalculatingInputStream.java:98)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
    at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)

Answer 1

这仅表示HttpURLConnection的输入流中的数据多于contentLengthParam。您可以做的是将连接的输入流中的所有内容读入缓冲区，计算其长度，然后将该缓冲区写入S3。