import java.io.FileOutputStream; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.OutputStream; 
import java.util.HashMap; 
import java.util.Map; 
import java.util.Properties; 
 
import org.apache.commons.logging.Log; 
import org.apache.commons.logging.LogFactory; 
 
 
public class PropertyUtil { 
	private static Log log = LogFactory.getLog(PropertyUtil.class); 
	private static String PATH = "config//sftp.properties"; 
 
	public static void setPATH(String pATH) { 
		PATH = pATH; 
	} 
 
 
	public static String getValue(String key) { 
		Properties props = new Properties(); 
		try { 
			InputStream in = PropertyUtil.class.getClassLoader().getResourceAsStream(PATH);//new BufferedInputStream(new FileInputStream(PATH)); 
			props.load(in); 
			String value = props.getProperty(key); 
			return value; 
		} catch (Exception e) { 
			e.printStackTrace(); 
			log.error(e.getMessage()); 
			return null; 
		} 
	} 
	 
	public static Map<String, String> getValue( Map<String, String> map) { 
		Properties props = new Properties(); 
		try { 
			InputStream in = PropertyUtil.class.getClassLoader().getResourceAsStream(PATH);//new BufferedInputStream(new FileInputStream(PATH)); 
			props.load(in); 
			for (Map.Entry<String, String> entry : map.entrySet()) { 
				String key=entry.getKey(); 
				String value = props.getProperty(key); 
				map.put(key, value); 
			} 
			return map; 
		} catch (Exception e) { 
			e.printStackTrace(); 
			log.error(e.getMessage()); 
			return null; 
		} 
	} 
 
 
	public static void setValue(String key, String value) { 
		Properties prop = new Properties(); 
		try { 
			InputStream fis = PropertyUtil.class.getClassLoader().getResourceAsStream(PATH); 
			prop.load(fis); 
			OutputStream fos = new FileOutputStream(PropertyUtil.class.getClassLoader().getResource("").getPath() + PATH); 
			prop.setProperty(key, value); 
			prop.store(fos, "Update '" + key + "' value"); 
		} catch (IOException e) { 
			log.error("Visit " + PATH + " for updating " +  key + " value error"); 
		} 
	} 
	public static void main(String[] args) { 
		 
		 Map<String, String> map = new HashMap<String, String>();  
		 map.put("server", ""); 
		 map.put("user", ""); 
		 map.put("password", ""); 
		  
		 map=PropertyUtil.getValue(map); 
		 System.out.println(map.get("server")); 
		 System.out.println(map.get("user")); 
		 System.out.println(map.get("password")); 
		 
	} 
}