1.tomcat日志错误信息

Thu Jul 19 18:01:03 CST 2018 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.

2.解决方法

根据日志信息可以知道，需要在JDBC连接串中配置useSSL=false，如下：http://www.cndba.cn/Expect-le/article/2902

<bean id="dataSource"
    class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="com.mysql.jdbc.Driver" />
    <property name="url" value="jdbc:mysql://localhost:3306/databasename?characterEncoding=utf8&amp;useSSL=false" />
    <property name="username" value="test" />
    <property name="password" value="test" />
</bean>

重启TOMCAT即可。

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useSSL=false