From 07d47bcd7a58f42354b2d3e36cb26a5f359f8bc2 Mon Sep 17 00:00:00 2001 From: erik Date: Sat, 2 Sep 2006 20:10:33 +0000 Subject: [PATCH] --- .../org/wamblee/general/ClassPathHacker.java | 72 +++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 support/src/main/java/org/wamblee/general/ClassPathHacker.java diff --git a/support/src/main/java/org/wamblee/general/ClassPathHacker.java b/support/src/main/java/org/wamblee/general/ClassPathHacker.java new file mode 100644 index 00000000..b8d52738 --- /dev/null +++ b/support/src/main/java/org/wamblee/general/ClassPathHacker.java @@ -0,0 +1,72 @@ +/* + * Copyright 2006 the original author or authors. + * + * 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 org.wamblee.general; + +import java.io.IOException; +import java.io.File; +import java.net.URLClassLoader; +import java.net.URL; +import java.lang.reflect.Method; + +public class ClassPathHacker { + + private static final Class[] PARAMETERS = new Class[] { URL.class }; + + private static final String JAR_SUFFIX = ".jar"; + + public static void addJarsInDirectory(File aDirectory) throws IOException { + System.out.println("directory '" + aDirectory + "'"); + + for (File aFile : aDirectory.listFiles()) { + System.out + .println("Considering '" + aFile.getCanonicalPath() + "'"); + if (aFile.getName().toLowerCase().endsWith(JAR_SUFFIX)) { + System.out.println("Adding '" + aFile.getCanonicalPath() + + "' to classpath."); + addFile(aFile); + } + } + } + + public static void addFile(String s) throws IOException { + File f = new File(s); + addFile(f); + } + + public static void addFile(File f) throws IOException { + addURL(f.toURL()); + } + + public static void addURL(URL u) throws IOException { + + URLClassLoader sysloader = (URLClassLoader) ClassLoader + .getSystemClassLoader(); + Class sysclass = URLClassLoader.class; + + try { + Method method = sysclass.getDeclaredMethod("addURL", PARAMETERS); + method.setAccessible(true); + method.invoke(sysloader, new Object[] { u }); + } catch (Throwable t) { + t.printStackTrace(); + throw new IOException( + "Error, could not add URL to system classloader"); + } + + } + +} -- 2.31.1