mongodb - Dump Mongo Collection into JSON format

Question

Is there any way to dump mongo collection into json format? Either on the shell or using java driver.I am looking for the one with best performance.

Answer 1

Mongo includes a mongoexport utility (see docs) which can dump a collection. This utility uses the native libmongoclient and is likely the fastest method.

mongoexport -d <database> -c <collection_name>

Also helpful:

-o: write the output to file, otherwise standard output is used (docs)

--jsonArray: generates a valid json document, instead of one json object per line (docs)

--pretty: outputs formatted json (docs)