方便更快捷的说明问题，可以按需填写（可删除）
使用环境：
springboot:2.3.2.RELEASE
springcloud:Hoxton.SR9
springcloudAlibaba:2.2.6.RELEASE
场景、问题：
yaml配置：
spring:
shardingsphere:
datasource:
# 数据库名称，多个以逗号隔开
names: air,bs0,bs1,bs2,bs3
air:
type: com.zaxxer.hikari.HikariDataSource
driver-class-name: com.mysql.cj.jdbc.Driver
jdbc-url: jdbc:mysql:loadbalance://${mysql.host}:${mysql.port}/fengkong_air?useUnicode=true&zeroDateTimeBehavior=convertToNull&serverTimezone=Asia/Shanghai&useSSL=false&nullNamePatternMatchesAll=true
username: ${mysql.username}
password: ${mysql.password}
minimum-idle: 10 #最小空闲连接数量
maximum-pool-size: 100 #连接池最大连接数，默认是10
connection-test-query: SELECT 1
connection-timeout: 30000 #数据库连接超时时间,默认30秒，即30000
报错：Caused by :org.apache.shardingsphere.infra.database.metadata.UnrecognizedDatabaseURLException:The URL:‘jdbc:mysql:loadbalance://${mysql.host}:${mysql.port}/fengkong_air?useUnicode=true&zeroDateTimeBehavior=convertToNull&serverTimezone=Asia/Shanghai&useSSL=false&nullNamePatternMatchesAll=true’ is not recognized. Please refer to this pattern ‘jdbc:(mysql|mysqlx)(:loadbalance|:replication)?(\w*:)?//([\w-.]+):?([0-9]),?.?/([\w-]+);?\S*’