在windows上文件夾和判斷盤符

String source = "";
			if (System.getProperties().getProperty("os.name").toUpperCase().contains("WINDOWS")){
				File[] roots = File.listRoots();
				if (roots.length>0){
					source=roots[0].toString().replaceAll("\\\\","/")+"sitemap/";
				}
			}else {
				source="/home/sitemap/";
			}
			File file = new File(source);
			if (!file.exists()) {
				file.mkdir();
			}