SpringBoot异常：Error creating bean with name 'entityManagerFactory' defined in class path resource

使用springboot持久化时，遇到异常：

Error creating bean with name 'entityManagerFactory' defined in class path resource 
Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
Caused by: org.hibernate.boot.registry.selector.spi.StrategySelectionException: Unable to resolve name [org.hibernate.dialect.MySQL5Dialect ] as strategy 

解决办法：

在application.properties属性文件中，多空格

原来的：

spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect

把org.hibernate.dialect.MySQL5Dialect等号两边的空格去掉即可