json quiry twitter

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forgotten..

in General Discussion • Other • 3 years ago

Hi im trying to quiry twitter using json. My knowledge is very basic i was just wondering if anyone had some code/library that i could look at because i find that if i can see how someone else has done it i might be able to get my head round it :P

Thanks :D

Replies(3)

akiersky

Re: json quiry twitter

2 years ago

Hi forgottenhero3,

first off I would suggest looking into the twitter4j lib ( http://twitter4j.org/en/index.html) they have some decent examples to get you started. Twitter reciently updated their autorization 'oauth' ( http://dev.twitter.com/pages/oauth_faq) so you will need to go to https://dev.twitter.com/apps/new to register a new twitter app to get the needed codes (replaced with "xxxxxxxxxxx" below).

here's what I came up with from their instructions:

import org.json.*;
import twitter4j.auth.*;
import twitter4j.internal.http.*;
import twitter4j.*;
Twitter twitter;
List tweets;
//copy and paste these from your application in dev.twitter.com
String consumer_key = "XXXXXXXXXXXXXXXXXXXXXX";
String consumer_secret = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
String oauth_token = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
String oauth_token_secret = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
color bgcolor = color(255);
long timer;
void setup() {
size(640,480);
TwitterStream twitterStream = new TwitterStreamFactory().getInstance();
twitterStream.setOAuthConsumer(consumer_key, consumer_secret);
twitterStream.setOAuthAccessToken(new AccessToken( oauth_token, oauth_token_secret) );
}
void draw() {
background(bgcolor);
if (millis()-timer > 2000) bgcolor = color(255);
}
void mousePressed() {
twitter = new TwitterFactory().getInstance ();
twitter.setOAuthConsumer(consumer_key, consumer_secret);
twitter.setOAuthAccessToken(new AccessToken( oauth_token, oauth_token_secret) );
try {
tweets = twitter.getHomeTimeline();
for(int i = 0; i < tweets.size(); i++){
Status tweet = (Status)tweets.get(i);
println("TWEET!! \n");
println(tweet.getUser().getName() + " :: " + tweet.getText() +"\n \n");
}
bgcolor = color(0,0,255);
timer = millis();
}
catch (TwitterException e) {
println(e.getStatusCode());
}
}

once you set up your oauth keys, you can click on the app to get a snapshot of your live feed. (sorry if there is extra code in there, I was in the process of building a larger app. This guy has a great example of how to post a tweet from processing: http://tinkerlondon.com/now/2010/09/14/oauth-twitter-and-processing/

Hope this gets you started! Good luck!

akiersky

Re: json quiry twitter

2 years ago

It looks like the tinkerlondon tutorial is a bit out of date, and uses incorrect quotes. Here's his example with the needed corrections. Again you will need to provide the oauth stuff:

import twitter4j.conf.*;
import twitter4j.internal.async.*;
import twitter4j.internal.org.json.*;
import twitter4j.internal.logging.*;
import twitter4j.api.*;
import twitter4j.util.*;
import twitter4j.auth.*;
import twitter4j.internal.http.*;
import twitter4j.*;
String msg = "Automatically posted from Processing";
//copy and paste these from your application in dev.twitter.com
String consumer_key = "XXXXXXXXXXXXXXXXXXXXXXX";
String consumer_secret = "XXXXXXXXXXXXXXXXXXXXXXX";
String oauth_token = "XXXXXXXXXXXXXXXXXXXXXXX";
String oauth_token_secret = "XXXXXXXXXXXXXXXXXXXXXXX";
color bgcolor = color(255);
long timer;
void setup() {
size(640, 480);
}
void draw() {
background(bgcolor);
if (millis()-timer > 2000) bgcolor = color(255);
}
void mousePressed() {
Twitter twitter = new TwitterFactory().getInstance ();
twitter.setOAuthConsumer(consumer_key, consumer_secret);
twitter.setOAuthAccessToken(new AccessToken( oauth_token, oauth_token_secret) );
try {
Status st = twitter.updateStatus(msg + " " + second());
println("Successfully updated the status to [" + st.getText() + "].");
bgcolor = color(0, 0, 255);
timer = millis();
}
catch (TwitterException e) {
println(e.getStatusCode());
}
}

click to tweet!

Good luck!

toxmeister

Re: json quiry twitter

2 years ago

Would also recommend twitter4j as default option, but if you're just going to use the twitter search API, you don't need to go through the hassle of creating some OAuth credentials. Also, JSON is just one of the possible output formats, another one is Atom. For for the latter you can use my toxiclibs which build on JAXB and have basic support for Atom feeds built in:

import toxi.data.feeds.*;
String atomURL="http://search.twitter.com/search.atom?q=%23processing";
AtomFeed feed=AtomFeed.newFromURL(atomURL);
println(feed.entries.size()+" entries loaded");
for(AtomEntry e : feed) {
println(String.format("[%s] %s", e.author.name, e.title));
}

You can use the advanced search tool on twitter to construct more complex search queries (without authentication) and then grab the feed url from the results page...

Also, here're a few other forum threads about twitter4j:

http://forum.processing.org/topic/geolocation-twitter-search-twitter4j

http://forum.processing.org/topic/geolocation

More generally, and maybe not in the case of twitter (since there's twitter4j), but if you do have to use JSON, then I'd recommend using the Jackson libraries...

http://jackson.codehaus.org/

Hth!

http://postspectacular.com | http://toxiclibs.org

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