如何在Spring Boot中调试MVC控制器URL映射？

Question

2018-04-13 18:25:29.495  INFO 5512 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$f5f4a697] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 
2018-04-13 18:25:30.584  INFO 5512 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2018-04-13 18:25:30.604  INFO 5512 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2018-04-13 18:25:30.607  INFO 5512 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.27
2018-04-13 18:25:33.052  INFO 5512 --- [ost-startStop-1] org.apache.jasper.servlet.TldScanner     : At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded
JARs during scanning can improve startup time and JSP compilation time.
2018-04-13 18:25:33.384  INFO 5512 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2018-04-13 18:25:33.384 DEBUG 5512 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT] 
2018-04-13 18:25:33.385  INFO 5512 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization comp
leted in 6776 ms
2018-04-13 18:25:33.761  INFO 5512 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Mapping servlet: 'dispatcherServlet' to [/]
2018-04-13 18:25:33.768  INFO 5512 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'metricsFilter' to: [/*]

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我不能共享代码，因为它不是公共的。谢谢你调查这件事。

Answer 1

有没有一种方法可以找出为什么控制器类没有被MVC添加到URL映射中？

总是很难找出为什么某些事情没有发生（除非它阻止了启动），但是Tomcat中有一个配置项可能会在调试这个问题时派上用场：

在上下文中设置logeffectivewebxml=“true”并在日志中看到有效的web.xml--从那里您应该能够识别URL处理是连线的，还是重载的或以某种方式抢占的。