Properties读取配置文件中的属性值

import java.util.Properties;

import org.apache.log4j.Logger;

public class PropertyReader {

private static Properties props=new Properties();

private final Logger logger = Logger.getLogger(getClass());

   public PropertyReader(){

     loadConfigFile("fileupload.properties");

   }

   public PropertyReader(String fileName){

     loadConfigFile(fileName);

   

   }

private  void loadConfigFile(String fileName) {

try {

java.io.InputStream fis = getClass().getResourceAsStream("/" + fileName);

props.load(fis);

//props.load(new FileInputStream("/"+fileName));

}

catch(Exception e) {

logger.error("load file failed!",e);

}

}

public String getProperty(String key){

return props.getProperty(key);

}

public int size(){

return props.size();

}

public Properties getProperties(){

return props;

}

/**

* @param args

*/

public static void main(String[] args) {

PropertyReader pr = new PropertyReader("config.properties");

String a = pr.getProperty(null+"");

System.out.println(a==null?"":a);

}

}