Merge pull request #10 from don-vip/master

use JOSM HTTPClient + catch JsonParsingException

Author: iandees

src/org/openstreetmap/josm/plugins/fieldpapers/FieldPapersAddLayerAction.java

@@ -1,31 +1,33 @@
 package org.openstreetmap.josm.plugins.fieldpapers;
 
-import org.openstreetmap.josm.Main;
-import org.openstreetmap.josm.actions.JosmAction;
-import org.openstreetmap.josm.data.Bounds;
-import org.openstreetmap.josm.data.coor.LatLon;
-import org.openstreetmap.josm.gui.ExtendedDialog;
-import org.openstreetmap.josm.gui.MainApplication;
-import org.openstreetmap.josm.gui.widgets.JosmTextField;
-import org.openstreetmap.josm.tools.GBC;
-import org.openstreetmap.josm.tools.Utils;
+import static org.openstreetmap.josm.tools.I18n.tr;
+
+import java.awt.GridBagLayout;
+import java.awt.event.ActionEvent;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
 
 import javax.json.Json;
 import javax.json.JsonArray;
 import javax.json.JsonObject;
 import javax.json.JsonReader;
+import javax.json.stream.JsonParsingException;
 import javax.swing.JLabel;
 import javax.swing.JOptionPane;
 import javax.swing.JPanel;
 
-import java.awt.GridBagLayout;
-import java.awt.event.ActionEvent;
-import java.io.IOException;
-import java.io.InputStream;
-import java.net.URL;
-import java.net.URLConnection;
-
-import static org.openstreetmap.josm.tools.I18n.tr;
+import org.openstreetmap.josm.Main;
+import org.openstreetmap.josm.actions.JosmAction;
+import org.openstreetmap.josm.data.Bounds;
+import org.openstreetmap.josm.data.coor.LatLon;
+import org.openstreetmap.josm.gui.ExtendedDialog;
+import org.openstreetmap.josm.gui.MainApplication;
+import org.openstreetmap.josm.gui.widgets.JosmTextField;
+import org.openstreetmap.josm.tools.GBC;
+import org.openstreetmap.josm.tools.HttpClient;
+import org.openstreetmap.josm.tools.Logging;
+import org.openstreetmap.josm.tools.Utils;
 
 @SuppressWarnings("serial")
 public class FieldPapersAddLayerAction extends JosmAction {
@@ -94,36 +96,19 @@ public void openUrl(String url) {
             MainApplication.getLayerManager().addLayer(wpl);
 
         } catch (IOException ex) {
-            ex.printStackTrace();
+            Logging.error(ex);
             JOptionPane.showMessageDialog(Main.parent,tr("Could not read information for the id \"{0}\" from fieldpapers.org", url));
         }
     }
 
     private JsonObject getMetadata(String snapshotUrl) throws IOException {
-        InputStream is = null;
-        JsonReader reader = null;
-
-        try {
-            URL url = new URL(snapshotUrl);
-
-            URLConnection connection = url.openConnection();
-            connection.setRequestProperty("Accept", "application/json");
-
-            is = connection.getInputStream();
-            reader = Json.createReader(is);
-
+        try (
+            InputStream is = HttpClient.create(new URL(snapshotUrl)).setAccept("application/json").connect().getContent();
+            JsonReader reader = Json.createReader(is)
+        ) {
             return reader.readObject();
-        } finally {
-            if (is != null) {
-                try {
-                    is.close();
-                } catch (IOException err) {
-                    // Ignore
-                }
-            }
-            if (reader != null) {
-                reader.close();
-            }
+        } catch (JsonParsingException e) {
+            throw new IOException(e);
         }
     }