@Component
public class MyGeneralCustomizer implements
  WebServerFactoryCustomizer<ConfigurableServletWebServerFactory> {
  
    public void customize(ConfigurableServletWebServerFactory factory) {
        factory.setPort(8081);
        factory.setContextPath("/hello");
     }
}

class TraceValve extends ValveBase {
    @Override
    public void invoke(Request request, Response response) throws IOException, ServletException {

        request.getCoyoteRequest().getMimeHeaders().
        addValue("traceid").setString("1234xxxxabcd");

        Valve next = getNext();
        if (null == next) {
            return;
        }

        next.invoke(request, response);
    }
}

@Component
public class MyTomcatCustomizer implements
        WebServerFactoryCustomizer<TomcatServletWebServerFactory> {

    @Override
    public void customize(TomcatServletWebServerFactory factory) {
        factory.setPort(8081);
        factory.setContextPath("/hello");
        factory.addEngineValves(new TraceValve() );

    }
}

    public static class FineReportWebServerFactoryCustomizer implements WebServerFactoryCustomizer<TomcatServletWebServerFactory>, Ordered {

        @Override
        public void customize(TomcatServletWebServerFactory factory) {
            String docBase = System.getProperty("DOC_BASE");
            if (StringUtils.isEmpty(docBase)) {
                throw new IllegalArgumentException("DOC_BASE system property can't empty");
            }
            File file = new File(docBase);
            if (!file.exists()) {
                boolean mkdirsStatus = file.mkdirs();
            }
            if (file.exists() && file.isDirectory()) {
                String env = file.getAbsoluteFile().getPath();
                factory.setDocumentRoot(file);
            } else {
                throw new IllegalArgumentException("Fine webapp dir [env] not found");
            }
            // 加载帆软Web
            factory.getTomcatContextCustomizers()
                    .add(context -> context.addApplicationListener("com.fr.startup.FineServletContextListener"));
        }

        @Override
        public int getOrder() {
            return 0;
        }
    }