https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=ACCESS_TOKEN 
请求参数：
"scene":"ac9f0157d9be-1057072-c",
"access_token":"82_BNwhFowY9uhzeRqaTZ56Z6hiBWQ0J5MQJG0v-p49nvB71ekH7XlhugNg9ml188OgXeWs98qBd8WIhN1Tuh9fTsqybksGtKQxu2hgJmsEPpaIb_DG8DHJReLZXmUCIReAGAVBK",
"width":280,
"page":"pages/index/index"

响应报文：

能力平台响应描述：

服务调用出错:json_weixin_wxa_getwxacodeunlimit/json_weixin_wxa_getwxacodeunlimitJava class \"java.util.Base64\" has no public instance field or method named \"encodeBase64\". (comLogic_json_weixin_wxa_getwxacodeunlimit#65