Is it possible to download large files (>=1Gb) from a servlet to an applet using HttpClient? And what servlet-side lib is useful in this case? Is there another way to approach this?
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Michael Petrotta
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user592704
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Any server-side lib that allows you access to the raw output stream should be just fine. Servlets or JAX-RS for example. Get the output stream, get the input stream of your file, use a nice big buffer (4k maybe) and pump the bytes from input to output.
On the client side, your applet needs access to the file system. I assume you don't want to keep the 1GB in memory. (maybe we want to stream it to the screen, in which case you don't need elevated access).
Avoid client libraries that try to fully materialize the returned content before handing it to.
Example code here: Streaming large files in a java servlet
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Jochen Bedersdorfer
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No it is just file copying :) I found that FileUpload can help with server but there are so less examples or tutorials :( – user592704 Mar 14 '11 at 02:49
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And the HttpClient can help with applet but I couldn't find any example code which can demo the buff reading :( – user592704 Mar 14 '11 at 02:50
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Thank you for the link but what about FileUpload lib? Can it used to download files as well? – user592704 Mar 17 '11 at 05:54
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And is there some file size limits if I use just ServletOutputStream ? – user592704 Mar 17 '11 at 05:55