Convert byte array to Hex string using Mongoose Node JS

Question

I have a byte array field in mongodb. while reading i have to show the binary data as hex string.

I am using express js, mongoose , node js to read data from mongodb.

In java to convert hex string to byte array we have:

byte[] bytes = DatatypeConverter.parseHexBinary(s);

And byte array to hex string we have

DatatypeConverter.printHexBinary(bytes);

I want to similar function which does the same job in node js.

also please guide me how to define schema to achieve in mongoose.

Possible duplicate of How to display nodejs raw Buffer data as Hex string — Aramil Rey
– Aramil Rey, Commented Jul 30, 2018 at 14:37

Daphoque · Accepted Answer · 2018-07-30 14:45:40Z

0

In node you can use Buffer:

var a = Buffer.from([0x06, 0x75, 0x66, 0x66, 0x65, 0x72]).toString("hex"); // '067566666572'

// reverse operation
var b = Array.prototype.slice.call(new Buffer.from(a, "hex"), 0); // [ 6, 117, 102, 102, 101, 114 ]

edited Jul 30, 2018 at 14:45

answered Jul 30, 2018 at 14:31

Daphoque

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