//获取ticket

public static String getQr(String accessToken, String jsonMsg){
		String result = null;
		String requestUrl = " https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=TOKEN";
		requestUrl = requestUrl.replace("TOKEN", accessToken);
		JSONObject jsonObject = WeixinUtil.httpRequest(requestUrl, "POST", jsonMsg);
		if(null != jsonObject){
			System.out.println(jsonObject);
			result = jsonObject+"";
		}
		return result;
	}
	//用ticket获取二维码
	public static boolean chageQr(String ticket){
		boolean result = false;
		String requestUrl = "https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=TICKET";
		requestUrl = requestUrl.replace("TICKET", ticket);
		JSONObject jsonObject = WeixinUtil.httpRequest(requestUrl, "GET", null);
		System.out.println(jsonObject+"");
		if(null != jsonObject){
			System.out.println(jsonObject);
			int errorCode = jsonObject.getInt("errcode");
			String errorMsg = jsonObject.getString("errmsg");
			if(0 == errorCode){
				result = true;
				logger.info("成功errorCode:{"+errorCode+"},errmsg:{"+errorMsg+"}");
				System.out.println("成功errorCode:{"+errorCode+"},errmsg:{"+errorMsg+"}");
			}else{
				logger.info("失败errorCode:{"+errorCode+"},errmsg:{"+errorMsg+"}");
				System.out.println("失败errorCode:{"+errorCode+"},errmsg:{"+errorMsg+"}");
			}
		}
		return result;
	}

java 微信带参数的二维码