1、报错信息如下所示：
by: javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: No name matching XXX found
org.eclipse.paho.client.mqttv3.MqttException: MqttException
at org.eclipse.paho.client.mqttv3.internal.ExceptionHelper.createMqttException(ExceptionHelper.java:38) ~[org.eclipse.paho.client.mqttv3-1.2.2.jar:na]
at org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:736) ~[org.eclipse.paho.client.mqttv3-1.2.2.jar:na]
at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_251]
Caused by: javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: No name matching XXX found
at sun.security.ssl.Alerts.getSSLException(Alerts.java:198) ~[na:1.8.0_251]
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1967) ~[na:1.8.0_251]
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:331) ~[na:1.8.0_251]
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:325) ~[na:1.8.0_251]
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1689) ~[na:1.8.0_251]
at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:226) ~[na:1.8.0_251]
at sun.security.ssl.Handshaker.processLoop(Handshaker.java:1082) ~[na:1.8.0_251]
at sun.security.ssl.Handshaker.process_record(Handshaker.java:1010) ~[na:1.8.0_251]
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1079) ~[na:1.8.0_251]
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1388) ~[na:1.8.0_251]
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1416) ~[na:1.8.0_251]
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1400) ~[na:1.8.0_251]
at org.eclipse.paho.client.mqttv3.internal.SSLNetworkModule.start(SSLNetworkModule.java:149) ~[org.eclipse.paho.client.mqttv3-1.2.2.jar:na]
at org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:722) ~[org.eclipse.paho.client.mqttv3-1.2.2.jar:na]
... 1 common frames omitted
Caused by: java.security.cert.CertificateException: No name matching sgacc.agrithings.cn found
at sun.security.util.HostnameChecker.matchDNS(HostnameChecker.java:231) ~[na:1.8.0_251]
at sun.security.util.HostnameChecker.match(HostnameChecker.java:96) ~[na:1.8.0_251]
at sun.security.ssl.X509TrustManagerImpl.checkIdentity(X509TrustManagerImpl.java:459) ~[na:1.8.0_251]
at sun.security.ssl.X509TrustManagerImpl.checkIdentity(X509TrustManagerImpl.java:427) ~[na:1.8.0_251]
at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:232) ~[na:1.8.0_251]
at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:132) ~[na:1.8.0_251]
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1671) ~[na:1.8.0_251]
... 10 common frames omitted
百度上所有的解决方案都试了，最终发现是springboot版本导致的，测试了2.2.7和2.3.0版本，都报以上错误信息，改为2.2.4以下版本后正常。
哪位大佬知道是什么原因导致的麻烦评论区回复下，非常感谢！