Changeset 624

Timestamp:

12/13/13 16:06:50 (11 years ago)

Author:

jts21

Message:

Add runJar action that loads and runs an executable jar file in the memory space of Expeditee.
Doesn't work very well (closing the launched application will call System.exit(), which results in Expeditee also closing).
The idea was to see if any generic java program could be loaded inside of an Expeditee widget. As it turns out, they can be loaded, but not safely and probably not inside of a widget unless there's some way to capture a window creation in java.

File:

• trunk/src/org/expeditee/actions/Misc.java (modified) (4 diffs)

trunk/src/org/expeditee/actions/Misc.java

@@ -4 +4 @@
 import java.awt.Desktop;
 import java.awt.Image;
-import java.awt.Point;
 import java.awt.Polygon;
 import java.awt.image.BufferedImage;
 import java.awt.image.VolatileImage;
-import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
-import java.io.StringReader;
 import java.lang.reflect.Method;
+import java.net.URL;
+import java.net.URLClassLoader;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.jar.Attributes;
+import java.util.jar.JarFile;
 
 import javax.imageio.ImageIO;
@@ -36 +37 @@
 import org.expeditee.gui.TimeKeeper;
 import org.expeditee.importer.FrameDNDTransferHandler;
-import org.expeditee.io.ExaReader;
-import org.expeditee.io.ExaWriter;
-import org.expeditee.io.FrameWriter;
 import org.expeditee.io.WebParser;
 import org.expeditee.io.flowlayout.XGroupItem;
@@ -44 +42 @@
 import org.expeditee.items.ItemUtils;
 import org.expeditee.items.Line;
-import org.expeditee.items.Picture;
 import org.expeditee.items.Text;
-import org.expeditee.items.XRayable;
 import org.expeditee.items.widgets.InteractiveWidget;
 import org.expeditee.items.widgets.JfxBrowser;
@@ -1375 +1371 @@
                 FrameUtils.CreateDefaultProfile(UserSettings.UserName, homeFrame);
         }
+        
+        /**
+         * Loads and runs an executable jar file in a new Thread
+         * @param jar path to the jar file to run
+         */
+        public static void runJar(String jar) throws Exception {
+                File jf = new File(jar);
+                if(!jf.exists()) {
+                        System.err.println("jar '" + jar + "' could not be found");
+                        return;
+                }
+                JarFile jarFile = new JarFile(jf);
+                
+                String mainClassName = (String) jarFile.getManifest().getMainAttributes().get(new Attributes.Name("Main-Class"));
+                if(mainClassName == null) {
+                System.err.println("jar '" + jar + "' does not have a Main-Class entry");
+                jarFile.close();
+                        return;
+        }
+                jarFile.close();
+                System.out.println("Main-Class = " + mainClassName);
+                
+                ClassLoader classLoader = ClassLoader.getSystemClassLoader();
+
+                Method addURL = URLClassLoader.class.getDeclaredMethod("addURL", URL.class);
+                addURL.setAccessible(true);
+                addURL.invoke(classLoader, jf.toURI().toURL());
+
+                final Class<?> jarClass = classLoader.loadClass(mainClassName);
+                
+                final Method main = jarClass.getDeclaredMethod("main", String[].class);
+                
+                new Thread(new Runnable() {
+                        public void run() {
+                                try {
+                        main.invoke(jarClass, new Object[] {new String[0]});
+                } catch (Exception e) {
+                        System.out.println("Failed to start jar");
+                        e.printStackTrace();
+                }
+                        }
+                }).start();
+        }
 }