connect url
log
log
remove logback, springboot provide default version


Customize:


	This file is the default logback configuration for Spring Boot. To use
the same
	defaults and add custom logger levels you can copy this file and add
additional
	overrides, e.g:

	<include resource="org/springframework/boot/logging/logback/base.xml"/>
	<logger name="org.springframework.web" level="DEBUG"/>
	...