廖師兄，我配置完數據庫后，啟動項目報錯，請問是什么原因

2018-09-06 07:52:37.710 ERROR 12844 --- [? ? ? ? ? ?main] com.zaxxer.hikari.pool.HikariPool? ? ? ? : HikariPool-1 - Exception during pool initialization.

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_31]

at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_31]

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_31]

at java.lang.reflect.Constructor.newInstance(Constructor.java:408) ~[na:1.8.0_31]

at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) ~[mysql-connector-java-5.1.46.jar:5.1.46]

yml文件內容

spring:
??profiles:
????active:?prod
??datasource:
????driver-class-name:?com.mysql.jdbc.Driver
????url:?jdbc:mysql://127.0.0.1:3036/dbgirl
????username:?root
????password:?123456
??jpa:
????hibernate:
??????ddl-auto:?create
????show-sql:?true