我解决了如下所述的问题：http :
//blog.netgloo.com/2015/07/09/spring-boot-communications-link-failure-with-
mysql-and-hibernate/，并在
application.properties文件中添加了以下配置：
spring.datasource.tomcat.testWhileIdle = truespring.datasource.tomcat.timeBetweenEvictionRunsMillis = 60000spring.datasource.tomcat.validationQuery = SELECT 1
