一、环境

springboot ，mybaits-plus,mysql，linux 服务器。服务器修改了SSL配置，对应的服务需要修改。

二 、问题1:Access without SSL denied

Caused by: java.sql.SQLException: Access without SSL denied
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:965)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3933)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3869)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:864)
	at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1707)
	at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1217)
	at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2189)
	at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2220)
	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2015)
	at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:768)
	at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
	at sun.reflect.GeneratedConstructorAccessor43.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:403)
	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:385)
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:323)
	at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138)
	at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:364)
	at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206)
	at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:476)
	at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71)
	at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:726)
	at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:712)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	... 3 common frames omitted

解决方法：配置文件中数据库连接的url中设置useSSL为true。

三、问题2：设置useSSL为true后，出现：java.security.cert.CertPathValidatorException: Path does not chain with any of the trust anchors

问题出现的原因：mysql-connector-java 依赖版本号太低。

解决办法：

<dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.28</version>
 </dependency>