public QingConnector(String qingUrl,String accessKeyid,String accessPrivateKey){
		if(null == qingUrl || "".equals(qingUrl) || qingUrl.endsWith("/")){
			this.qingUrl = qingUrl;
		}else{
			this.qingUrl = qingUrl.substring(0,qingUrl.length()-1);
		}
		this.accessKeyid = accessKeyid;
		this.accessPrivateKey = accessPrivateKey;
	}