1、验证银行卡号：https://ccdcapi.alipay.com/validateAndCacheCardInfo.json?_input_charset=utf-8&cardNo=6234090909090909090&cardBinCheck=true
1 {"validated":false,"key":"6234090909090909090","stat":"ok","messages":[{"errorCodes":"CARD_BIN_NOT_MATCH","name":"cardNo"}]}
2、获取银行logo:https://apimg.alipay.com/combo.png?d=cashier&t=ABC（银行简称-大写）