public static final File getFileResource(String resourcename){
   	URL in = ClassLoader.getSystemClassLoader().getResource(resourcename);
	if (in==null){
		in = Thread.currentThread().getContextClassLoader()
			.getResource(resourcename);
	}
	if (in==null) return null;
	return new File(in.getFile());
}

One Response to “Find your resources” »»

1.   Secco
   Kommentar by Secco | 10:58 25.09.08|X

   In einigen Fällen reicht das nicht, z. B. wenn man eine Webapplikation hat, die Datei aber aus einer Testklasse und nicht aus der Webapplikation laden möchte. Folgende Erweiterung hilft hier:

   public static final File getFileResource(String resourcename){
      	URL in = ClassLoader.getSystemClassLoader().getResource(resourcename);
   	if (in==null){
   		in = Thread.currentThread().getContextClassLoader()
   			.getResource(resourcename);
   	}
   	if (in==null){
   		final String classPath = System.getProperty("java.class.path",".");
   		final String [] paths = classPath.split("\\Q"+File.pathSeparator+"\\E");
   		final HashSet<File> checkedPaths = new HashSet<File>(paths.length);
   		File f, ft;
   		int index;
   		for (int i=0; i<paths.length; i++){
   			f = new File(paths[i]);
   			if (f.isFile()){
   				f = new File(f.getParent());
   			}
   			if (!checkedPaths.contains(f)){
   				ft = new File(f.getPath(), resourcename);
   				if (ft.exists()){
   					return ft;
   				}
   				index = f.getPath().indexOf(File.separator+"WEB-INF"+File.separator);
   				if (index>-1){
   					ft = new File(f.getPath().substring(0, index+8), resourcename);
   					if (!checkedPaths.contains(ft)){
   						if (ft.exists()){
   							return ft;
   						}
   						checkedPaths.add(ft);
   					}
   				}
   				index = f.getPath().indexOf(File.separator+"web-inf"+File.separator);
   				if (index>-1){
   					ft = new File(f.getPath().substring(0, index+8), resourcename);
   					if (!checkedPaths.contains(ft)){
   						if (ft.exists()){
   							return ft;
   						}
   						checkedPaths.add(ft);
   					}
   				}
   				checkedPaths.add(f);
   			}
   		}
   		return null;
   	}
   	return new File(in.getFile());
   }

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