Spring boot 1.5.2 – 加载徽标后Web应用程序停止了吗？
我有一个非常奇怪的Spring Boot问题，我不知道为什么使用Spring Boot的Web应用程序无法启动，即使我直接在终端上运行它也没有输出错误。
java -jar /var/lib/tomcat/webapps/rasdaman.war log4j:WARN No appenders could be found for logger (org.springframework.web.context.support.StandardServletEnvironment). log4j:WARN Please initialize the log4j system properly. log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info. . ____ _ __ _ _ /\ / ' __ _ () __ __ _ \ \ \ ( ( )__ | '_ | '| | ' / ` | \ \ \ \/ )| |)| | | | | || (| | ) ) ) ) ' || .__|| ||| |_, | / / / / =========||==============|/=//// :: Spring Boot :: (v1.5.2.RELEASE) [rasdaman@osboxes rasdaman]$ echo $? 1 这是应用程序类https://pastebin.com/rinWbp9z ，这个Web应用程序使用Liquibase来填充数据库模式和Spring引导version 1.5.2 。 你可以分享一些提示进行调试吗？
所以，问题是，我正在使用log4.properties out of war文件。 然后，当我开始这场战争时，它显示了非常好的信息，如下所示：
java -jar target/petascope_main/rasdaman.war log4j:WARN No appenders could be found for logger (org.springframework.web.context.support.StandardServletEnvironment). log4j:WARN Please initialize the log4j system properly. log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info. . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v1.5.2.RELEASE) Aug 28, 2017 6:00:31 PM org.apache.catalina.core.StandardService startInternal INFO: Starting service Tomcat Aug 28, 2017 6:00:32 PM org.apache.catalina.core.StandardEngine startInternal INFO: Starting Servlet Engine: Apache Tomcat/8.5.11 Aug 28, 2017 6:00:33 PM org.apache.catalina.core.ApplicationContext log INFO: Initializing Spring embedded WebApplicationContext Aug 28, 2017 6:00:38 PM org.apache.catalina.core.StandardService stopInternal INFO: Stopping service Tomcat
然后，我在src / main / resources中添加了一个log4j.properties文件，其中包含以下内容：
log4j.rootLogger=debug, stdout log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.Target=System.out log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%t %-5p %c{2} - %m%n
之后，我可以看到Spring中的详细日志，它使Tomcat停止：
*************************** APPLICATION FAILED TO START *************************** Description: Field abstractHandler in org.rasdaman.ApplicationMain required a single bean, but 7 were found: - KVPRasqlServiceHandler: defined in URL [jar:file:/home/rasdaman/build/applications/petascope/target/petascope_main/rasdaman.war!/WEB-INF/classes!/petascope/controller/handler/service/KVPRasqlServiceHandler.class] - KVPWCPSServiceHandler: defined in URL [jar:file:/home/rasdaman/build/applications/petascope/target/petascope_main/rasdaman.war!/WEB-INF/classes!/petascope/controller/handler/service/KVPWCPSServiceHandler.class] - SOAPWCSServiceHandler: defined in URL [jar:file:/home/rasdaman/build/applications/petascope/target/petascope_main/rasdaman.war!/WEB-INF/classes!/petascope/controller/handler/service/SOAPWCSServiceHandler.class] - KVPWCSTServiceHandler: defined in URL [jar:file:/home/rasdaman/build/applications/petascope/target/petascope_main/rasdaman.war!/WEB-INF/classes!/petascope/controller/handler/service/KVPWCSTServiceHandler.class] - XMLWCSServiceHandler: defined in URL [jar:file:/home/rasdaman/build/applications/petascope/target/petascope_main/rasdaman.war!/WEB-INF/classes!/petascope/controller/handler/service/XMLWCSServiceHandler.class] - KVPWCSServiceHandler: defined in URL [jar:file:/home/rasdaman/build/applications/petascope/target/petascope_main/rasdaman.war!/WEB-INF/classes!/petascope/controller/handler/service/KVPWCSServiceHandler.class] - KVPWMSServiceHandler: defined in URL [jar:file:/home/rasdaman/build/applications/petascope/target/petascope_main/rasdaman.war!/WEB-INF/classes!/petascope/controller/handler/service/KVPWMSServiceHandler.class] Action: Consider marking one of the beans as @Primary, updating the consumer to accept multiple beans, or using @Qualifier to identify the bean that should be consumed
嗯，我必须说， 关于如何隐藏错误真是令人印象深刻。