201703001

package jackson; import java.io.File; import java.io.FileReader; import java.io.IOException; import java.io.UnsupportedEncodingException; import org.apache.commons.io.IOUtils; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; //import net.arnx.jsonic.JSONException; public class JsonTest { public static void main(String[] args) throws org.json.JSONException, UnsupportedEncodingException, IOException { //URL url = new URL("http://pcod.no-ip.org/yats/public_timeline?json"); // File file = new File("C:/TestData/garph.txt"); // URL url = new URL("http://pcod.no-ip.org/yats/public_timeline?json"); File file = new File("C:/TestData/test1.txt");   //C:\顔作業用\temp  //c:\\顔作業用\\temp\\graph.txt if(file.exists()){ System.out.println("存在します"); FileReader filereader = new FileReader(file); //BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream(), "UTF-8")); String contents =IOUtils.toString(filereader); try { JSONArray ja = new JSONArray(contents); for (int i = 0; i < ja.length(); i++) { JSONObject jo = (JSONObject) ja.get(i); System.out.println(i); System.out.println(jo.getString("UID")); System.out.println(jo.getString("IP")); System.out.println(); } } catch (JSONException e) { e.printStackTrace(); } }else{System.out.println("存在しない");} } }