JsonUrlConnector.java

/*******************************************************************************
 * Copyright 2014 Miami-Dade County
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import mjson.Json;

/**
 * Simple Url connector reading Json from any URL
 * No cache, 30 sec timeout.
 * 
 * @author Thomas Hilpold
 */
public class JsonUrlConnector {
     
    public final static int CONNECT_TIMEOUT_SECS = 30;
    public final static boolean USE_CACHE = false;
    
    public Json getJsonFromUrl(URL url) throws IOException 
    {
        URLConnection c = url.openConnection();
        c.setUseCaches(USE_CACHE);
        c.setConnectTimeout(CONNECT_TIMEOUT_SECS * 1000);
        BufferedReader r = new BufferedReader(new InputStreamReader(c.getInputStream()));
        String curLine;
        StringBuffer str = new StringBuffer(100000);
        while ((curLine = r.readLine()) != null) 
        {
                str.append(curLine);
        }
        return Json.read(str.toString());
    }
}