                        课程
                    
                        /后端开发
                        
                            /Java
                        
                        /2小时学会Spring Boot

完数据库后，启动项目报错

廖师兄，我配置完数据库后，启动项目报错，请问是什么原因

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文件内容

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