config.properties放在webroot/WEB-INF/classes/目錄下

config.properties檔案：

SYSTEM.FILESERVER.PATH=D\:/aa/bb/cc/

java檔案：

InputStream inputStream = this.getClass() .getClassLoader().getResourceAsStream( "config.properties" );

Properties prop = new Properties();
prop.load(inputStream);
String localPath = prop.getProperty("SYSTEM.FILESERVER.PATH");
inputStream.close();