请求小程序二维码Api接口时今天突然报错。证书问题？
org.springframework.web.client.ResourceAccessException: I/O error on POST request for "https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=26_b9Byd5k3rcUiSOQJ9GGL14kje17EVrcr9Wikok8S_zH1ay64oSOPoNiP36iIr4J4gTnT1S5D5UYfKFFkoxHAG9a51KzlevgOUofao-70GDtw8O57a5omWd94fHh4ETkf2Fny3KMFpEzOOh30EMFjAIAQYR": Unrecognized SSL message, plaintext connection?; nested exception is javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
42001就是access_token过期失效，有可能是保存的access_token还没过期之前你又在某个地方重新获取了新的access_token，导致你保存的access_token过期了