【无标题】jdbc报错，有关协议protocol，SSL

解决方案
URL = "jdbc:mysql:///mybatis?useUnicode=true&characterEncoding=utf8&useSSL=false"

即添加useSSL=false

开始学的时候导入jar包，只会提醒，不影响使用，

等到后面开始用maven，就发现这个必须得写，可能是数据库版本的问题，因为其他同学用的是5.6，我用的是5.7

报错信息

Mon Sep 18 16:06:40 CST 2023 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet successfully received from the server was 119 milliseconds ago.  The last packet sent successfully to the server was 110 milliseconds ago.
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
    at 
Caused by: javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate)
    at java.base/sun.security.ssl.HandshakeContext.<init>(HandshakeContext.java:172)
    at java.base/sun.security.ssl.ClientHandshakeContext.<init>(ClientHandshakeContext.java:103)
    at java.base/sun.security.ssl.TransportContext.kickstart(TransportContext.java:247)
    at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:448)
    at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:426)
    at com.mysql.jdbc.ExportControlled.transformSocketToSSLSocket(ExportControlled.java:186)
    ... 65 more