Java InputStream replicate clones, solving the problem of multiple reads

Little scum · Posted on 12/3/2021 10:10:22 AM

When developing web interfaces, we may need to read the values of InputStream multiple times, such as interceptor verification signatures, packet format verification, etc.

Review:

Java byte[] and InputStream are converted to each other
https://www.itsvse.com/thread-10033-1-1.html

Method 1:

Introduce "hutool-all" first, the code is as follows:

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Method 2 (not tested):

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The general contract for mark is that if the method markSupported returns true, then the input stream always logs all the bytes read after the mark is called, and is always ready to serve those same bytes again when the method reset is called, whenever it is called. However, if more bytes than readlimit can be read from the stream before reset is called, the stream does not need to log any data. Parameter: readlimit - The maximum limit on the number of bytes that can be read before the tag position is invalidated.

[Source] Java InputStream replicate clones, solving the problem of multiple reads

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