java - Jersey 1.17 download large files -

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i want download large files rest service, have code:

@get @path("/labodownloadanytype") @produces(mediatype.application_octet_stream) public response labodownload() throws filenotfoundexception {     final string filename = "samplevideo_1280x720_50mb.mp4";     final inputstream fileinstream = new fileinputstream(filename);     return response.ok(fileinstream, mediatype.application_octet_stream_type)       .header("content-disposition", "attachment; filename=\"" + filename + "\"" ) //optional       .build(); }

and when i'm using small files works great, want download large file (from 500mb 3gb) i'm getting 

java.lang.outofmemoryerror: java heap space

how solve problem?

use mappedbytebuffer instead of inputstream , can check implementation of mappedbytebuffer here check link

hope provide functionality need.


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