docs: static protected String[] splitURL(String url){
  		String beforePart;
  		String afterPart;
  		String[] l = new String[2];
  		int protocolEnd = url.indexOf("://");
  		if (protocolEnd == -1){	//如果没有协议信息
  			protocolEnd = -3;
  		}
  		int pathStart = url.indexOf("/", protocolEnd + 3);
  		if (pathStart == -1){//没路径信息
  			pathStart = url.length();
  			afterPart = "";
  		}else{
  			afterPart = url.substring(pathStart+1).toLowerCase();		// 斜线后的路径和参数
  		}
  		beforePart = url.substring(protocolEnd + 3, pathStart).toLowerCase();	// 斜线前的主机、端口和帐号
  		
  		String reversedBeforePart = new StringBuffer(beforePart).reverse().toString();
  		l[0] = reversedBeforePart;
  		l[1] = afterPart;
  		return l;
  	}