Store byte[] in MongoDB using Java -


i insert document collection field of byte[]. when query inserted document field, returns different byte[]. how fix that?

byte[] inputbytes = ...  mongocollection<document> collection = _db.getcollection("collectionx"); document doc = new document("test", 1).append("val", inputbytes); collection.insertone(doc.getdocument());  mongocursor<document> result = collection.find(eq("test", 1)).iterator(); document retrived_doc = cursor.next(); cursor.close();  byte[] outputbytes = ((binary)retrived_doc.get("val")).getdata();  // inputbytes = [b@719f369d // outputbytes = [b@7b70cec2

you can encode byte array , store in doc decode after extraction retrieve original.

static string   encodebase64string(byte[] binarydata)

encodes binary data using base64 algorithm not chunk output.

static byte[]   decodebase64(string base64string)

decodes base64 string octets.

please refer link - https://commons.apache.org/proper/commons-codec/apidocs/org/apache/commons/codec/binary/base64.html


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