No active profile set, falling back to default profiles: default
没有激活profile配置，执行默认的配置文件application.yaml
当配置了profile后：例如
spring:
profiles:
active: dev
就会显示The following profiles are active: dev
tomcat初始化80端口
Tomcat initialized with port(s): 80 (http)
开始初始化spring上下文
Initializing Spring embedded WebApplicationContext
上下文初始完成
Root WebApplicationContext: initialization completed in 793 ms
初始化druid数据源
init DruidDataSource
数据源一初始化完成
{dataSource-1} inited
tomcat服务器开启80端口（代表服务已经处理监听状态）
Tomcat started on port(s): 80 (http) with context path ‘’
服务启动时间和jvm运行时间
Started WxMpDemoApplication in 2.495 seconds (JVM running for 3.168)
