开发读取.properties 配置文件工具类PropertiesUtil

 import java.io.IOException;
 import java.io.InputStream;
 import java.util.Properties;

 import org.junit.Test;

 public class PropertiesUtil {
 private static Properties p = new Properties();
 static {
 try {
 p.load(PropertiesUtil.class.getClassLoader().getResourceAsStream("bitback.properties"));
 } catch (IOException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }
 }
 public static String getValue(String property){
 return (String) p.get(property);
 }
 @Test
 public static void main(String[] args){
 System.out.println(getValue("open.host"));
 }
 }