Need help parsing data

Programming Questions

w00dr0w

in Programming Questions • 2 years ago

I'm trying to make a visualization for processing that parses JSON data into a nice chart. So far i've got processing loading the JSON data as a large string (i think) but i cannot go anywhere from here.

The data I get returned to me is:

{"username": "USR_NAME", "unconfirmed_reward": "0.00000000", "send_threshold": "0.00000000", "confirmed_reward": "0.00000000", "workers": {"Worker1": {"last_share": 0000000000, "score": "000000.0000", "alive": true, "shares": 00, "hashrate": 00}, "Worker2": {"last_share": 0000000000, "score": "0", "alive": false, "shares": 0, "hashrate": 0}}, "wallet": "WALLET_ID", "estimated_reward": "0.00000000"}

I've tried some examples (and found the new york times JSON example especially helpful) but i just cannot get the info stored into a data format I can handle (mainly floats)

Any help on this would be greatly appreciated as I'm totally lost (googling "processing JSON" and every iteration i can think of has only proven to be mildly helpful)

Replies(2)

noncom

Re: Need help parsing data

2 years ago

Personally I think that JSON is more suitable for Javascript than Java due to Javascript's dynamic nature.

Try looking into some existing Java-JSON parsers: http://stackoverflow.com/questions/338586/a-better-java-json-library

And if you have a problem with general understanding of how parsing is done, I recommend studying the sources and relevant topics. If I would do the parsing manually, I would create a node object with properties like "name", "type", "value" and make a tree of them... also you should be able to work with strings like finding characters, cutting strings and such..

PhiLho

Re: Need help parsing data

2 years ago

You should use the search in the Processing site instead, it is more in focus ("processing" is a too generic term in computer science!) and includes old and new forum, wiki, etc.

In answer to a question here, I tried and used the Jackson library to parse Json data. It works fine, but alas I never finished the sketch, as I tried to use it in stream mode, and it is harder to use a XPath-like syntax on such mode. Next time, I will try and use the Dom mode instead.

Top Reply