MySql无法连接数据库
我的LOG如下：
2018-03-29 13:56:57.023 ERROR 5084 --- [ main] : Unable to create initial connections of pool.
.: Communications link failure
The last packet successfully received from the server was 12 milliseconds ago. The last packet sent successfully to the server was 11 milliseconds ago.
at .newInstance0(Native Method) ~[na:1.8.0_121]
at (:62) ~[na:1.8.0_121]
at (:45) ~[na:1.8.0_121]
at (:423) ~[na:1.8.0_121]
at (:425) ~[mysql-connector-java-5.1.:5.1.45]
at (:990) ~[mysql-connector-java-5.1.:5.1.45]
at (:203) ~[mysql-connector-java-5.1.:5.1.45]
at (:4901) ~[mysql-connector-java-5.1.:5.1.45]
at (:1659) ~[mysql-connector-java-5.1.:5.1.45]
at (:1226) ~[mysql-connector-java-5.1.:5.1.45]
at (:2188) ~[mysql-connector-java-5.1.:5.1.45]
at (:2219) ~[mysql-connector-java-5.1.:5.1.45]
at (:2014) ~[mysql-connector-java-5.1.:5.1.45]
at .<init>(:776) ~[mysql-connector-java-5.1.:5.1.45]
at .JDBC4Connection.<init>(:47) ~[mysql-connector-java-5.1.:5.1.45]
at .newInstance0(Native Method) ~[na:1.8.0_121]
at (:62) ~[na:1.8.0_121]
at (:45) ~[na:1.8.0_121]
at (:423) ~[na:1.8.0_121]
at (:425) ~[mysql-connector-java-5.1.:5.1.45]
at (:386) ~[mysql-connector-java-5.1.:5.1.45]
at (:330) ~[mysql-connector-java-5.1.:5.1.45]
at (:310) ~[tomcat-jdbc-8.5.:na]
at (:203) ~[tomcat-jdbc-8.5.:na]
at (:735) [tomcat-jdbc-8.5.:na]
at (:667) [tomcat-jdbc-8.5.:na]
at (:482) [tomcat-jdbc-8.5.:na]
at .<init>(:154) [tomcat-jdbc-8.5.:na]
at (:118) [tomcat-jdbc-8.5.:na]
at (:107) [tomcat-jdbc-8.5.:na]
at (:131) [tomcat-jdbc-8.5.:na]
at (:122) [hibernate-core-5.0.:5.0.]
at $(:180) [hibernate-core-5.0.:5.0.]
at (:68) [hibernate-core-5.0.:5.0.]
at (:35) [hibernate-core-5.0.:5.0.]
at (:88) [hibernate-core-5.0.:5.0.]
at (:254) [hibernate-core-5.0.:5.0.]
at (:228) [hibernate-core-5.0.:5.0.]
at (:207) [hibernate-core-5.0.:5.0.]
at (:51) [hibernate-core-5.0.:5.0.]
at (:94) [hibernate-core-5.0.:5.0.]
at (:237) [hibernate-core-5.0.:5.0.]
at (:207) [hibernate-core-5.0.:5.0.]
at (:352) [hibernate-core-5.0.:5.0.]
at (:111) [hibernate-core-5.0.:5.0.]
at (:847) [hibernate-entitymanager-5.0.:5.0.]
at (:874) [hibernate-entitymanager-5.0.:5.0.]
at (:60) [spring-orm-4.3.:4.3.]
at (:360) [spring-orm-4.3.:4.3.]
at (:382) [spring-orm-4.3.:4.3.]
at (:371) [spring-orm-4.3.:4.3.]
at (:336) [spring-orm-4.3.:4.3.]
at (:1687) [spring-beans-4.3.:4.3.]
at (:1624) [spring-beans-4.3.:4.3.]
at (:555) [spring-beans-4.3.:4.3.]
at (:483) [spring-beans-4.3.:4.3.]
at $(:306) [spring-beans-4.3.:4.3.]
at (:230) [spring-beans-4.3.:4.3.]
at (:302) [spring-beans-4.3.:4.3.]
at (:197) [spring-beans-4.3.:4.3.]
at (:1080) [spring-context-4.3.:4.3.]
at (:857) [spring-context-4.3.:4.3.]
at (:543) [spring-context-4.3.:4.3.]
at (:122) [spring-boot-1.5.:1.5.]
at (:693) [spring-boot-1.5.:1.5.]
at (:360) [spring-boot-1.5.:1.5.]
at (:303) [spring-boot-1.5.:1.5.]
at (:1118) [spring-boot-1.5.:1.5.]
at (:1107) [spring-boot-1.5.:1.5.]
at (:9) [classes/:na]
Caused by: : : : Path does not chain with any of the trust anchors
at (:192) ~[na:1.8.0_121]
at (:1949) ~[na:1.8.0_121]
at (:302) ~[na:1.8.0_121]
at (:296) ~[na:1.8.0_121]
at (:1514) ~[na:1.8.0_121]
at (:216) ~[na:1.8.0_121]
at (:1026) ~[na:1.8.0_121]
at .process_record(:961) ~[na:1.8.0_121]
at (:1062) ~[na:1.8.0_121]
at (:1375) ~[na:1.8.0_121]
at (:1403) ~[na:1.8.0_121]
at (:1387) ~[na:1.8.0_121]
at (:188) ~[mysql-connector-java-5.1.:5.1.45]
... 63 common frames omitted
Caused by: : : Path does not chain with any of the trust anchors
at $(:304) ~[mysql-connector-java-5.1.:5.1.45]
at (:984) ~[na:1.8.0_121]
at (:1496) ~[na:1.8.0_121]
... 71 common frames omitted
Caused by: : Path does not chain with any of the trust anchors
at (:153) ~[na:1.8.0_121]
at (:79) ~[na:1.8.0_121]
at (:292) ~[na:1.8.0_121]
at $(:297) ~[mysql-connector-java-5.1.:5.1.45]
... 73 common frames omitted
我的环境是：
<dependency>
<groupId></groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>我的MySql服务器是在CentOS7，版本是：Server version: 5.7.20 MySQL Community Server (GPL)
我的如下：
=jdbc:mysql://192.168.55.130:3306/mes?characterEncoding=utf8&useSSL=true&autoReconnect=false&rewriteBatchedStatements=true解决办法：
将useSSL=true改为useSSL=false
只能说明服务器没有打开SSL功能。