从JSON文本文件加载JSONObject的最佳方法是什么？

试试这个：

import net.sf.json.JSONObject;import net.sf.json.JSONSerializer;import org.apache.commons.io.IOUtils;    public class JsonParsing {        public static void main(String[] args) throws Exception { InputStream is =          JsonParsing.class.getResourceAsStream( "sample-json.txt"); String jsonTxt = IOUtils.toString( is ); JSonObject json = (JSONObject) JSONSerializer.toJSON( jsonTxt );         double coolness = json.getDouble( "coolness" ); int altitude = json.getInt( "altitude" ); JSonObject pilot = json.getJSonObject("pilot"); String firstName = pilot.getString("firstName"); String lastName = pilot.getString("lastName"); System.out.println( "Coolness: " + coolness ); System.out.println( "Altitude: " + altitude ); System.out.println( "Pilot: " + lastName );        }    }

这是您的sample-json.txt，应为json格式

{ 'foo':'bar', 'coolness':2.0, 'altitude':39000, 'pilot':     {         'firstName':'Buzz',         'lastName':'Aldrin'     }, 'mission':'apollo 11'}