问题：新建工程busr，采用pandora boot，引入了需要的包，简单写了点代码发布，

spring-boot启动报错：

Caused by: java.lang.IllegalArgumentException: LoggerFactory is not a Logback LoggerContext but Logback is on the classpath. 

Either remove Logback or the competing implementation (class org.apache.logging.slf4j.Log4jLoggerFactory loaded from  jar:file:/opt/**.jar!/BOOT-INF/lib/log4j-slf4j-impl-2.6.2.jar!/). If you are using WebLogic you will need to add 'org.slf4j'  to prefer-application-packages in WEB-INF/weblogic.xml Object of class [org.apache.logging.slf4j.Log4jLoggerFactory]  must be an instance of class ch.qos.logback.classic.LoggerContext at org.springframework.util.Assert.isInstanceOf(Assert.java:346) at org.springframework.boot.logging.logback.LogbackLoggingSystem.getLoggerContext(LogbackLoggingSystem.java:231) at org.springframework.boot.logging.logback.LogbackLoggingSystem.beforeInitialize(LogbackLoggingSystem.java:97) at org.springframework.boot.logging.LoggingApplicationListener.onApplicationStartedEvent(LoggingApplicationListener.java:226) at org.springframework.boot.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:205) at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:166) at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:138) at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:121) at org.springframework.boot.context.event.EventPublishingRunListener.started(EventPublishingRunListener.java:63) at org.springframework.boot.SpringApplicationRunListeners.started(SpringApplicationRunListeners.java:48)