Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
还是出现在yml文件节点。
具体是druid:这个节点，要有层次结构。详见yml文件。
server:
port: 8080
spring:
datasource:
name: daducha
type: com.alibaba.druid.pool.DruidDataSource
druid:
url: jdbc:mysql://127.0.0.1:3306/daducha
username: root
password: root
maxActive: 20
initialSize: 1
maxWait: 60000
minIdle: 1
timeBetweenEvictionRunsMillis: 60000
minEvictableIdleTimeMillis: 300000
testWhileIdle: true
testOnBorrow: false
testOnReturn: false
poolPreparedStatements: true
maxOpenPreparedStatements: 20
driver-class-name: com.mysql.jdbc.Driver
mybatis:
mapper-locations: classpath:mapping/*.xml
type-aliases-package: com.wuji.entity.po