2 spring webapplicationinitializers detected on classpath

最近在学用 spring boot 做项目，碰到一个问题，tomcat下正常运行的项目到jetty里老出问题，
搜了好多次，终于找到如下内容：

[url]http://stackoverflow.com/questions/32643530/classpath-issue-between-jetty-maven-plugin-and-tomcat-jdbc-8-0-9-leading-to-ser[/url]

把tomcat-judi变成provided

		
			org.apache.tomcat
			tomcat-juli
      8.5.5
			provided
		

添加文件 WEB-INF/jetty-web.xml

  
    true