springboot报错‘url’ attribute is not specified and no embedded datasource could

APPLICATION FAILED TO START

Description:

Failed to configure a DataSource: ‘url’ attribute is not specified and no embedded datasource could be configured.

Reason: Failed to determine a suitable driver class

Action:

Consider the following:
If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).
1、首先看连接datasource数据库的配置写了没，就是下面代码有没有在配置文件中写

spring:
  datasource:
      username: aa
      password: aa
      url: 数据库连接地址
      driver-class-name: oracle.jdbc.OracleDriver

2、如果有，在application.yml配置文件中修改端口名为7777，再重新运行，看报错提示信息的端口，如果端口不是7777，证明没有进入application.yml，按eclipse的maven-update project勾选force update

server:
	port: 7777