Sebastian Dietrich created IO-753:
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Summary: Provide a IOUtils.copy(OutputStream, InputStream)
Key: IO-753
URL: https://issues.apache.org/jira/browse/IO-753
Project: Commons IO
Issue Type: New Feature
Components: Utilities
Affects Versions: 2.11.0
Reporter: Sebastian Dietrich
We already have several copy(InputStream, OutputStream) methods, but often the
other way round is necessary - i.e. providing an InputStream on data provided
by an OutputStream.
This is e.g. the case when one is using a serialization library (for example,
serializing to JSON) and a transport layer (say, Tomcat) which takes an
InputStream. So you need to pipe the OutputStream from JSON over an HTTP
connection which wants to read from an InputStream.
My particular use-case is that I want to provide an Excel file (generated via
POI) at my web-application. POI can write a workbook to an OutputStream, but I
need to provide that Excel as an InputStream to my Web-Framework (Vaadin), so
users can download it.
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