我有一个配置为使用 DCEVM 的 Tomcat 8.5.32
JAVA_OPTS="-Xms512m -Dcatalina.home=$CATALINA_HOME -XXaltjvm=dcevm -javaagent:/usr/share/tomcat/lib/hotswap-agent-1.3.0.jar=autoHotswap=true"
要动态重新加载的类在 $CATALINA_HOME/conf/Catalina/localhost/mycontext.xml 中指定，以便 Tomcat 直接从 Eclipse 自动重新生成的 .class 文件重新加载它们。
<Context docBase="~/workspace/myapp/myapp-web/src/main/webapp">
<Resources>
<PostResources className="org.apache.catalina.webresources.DirResourceSet"
base="/vagrant/workspace/myapp/myapp-models/target/classes" internalPath="/" webAppMount="/WEB-INF/classes" />
<PostResources className="org.apache.catalina.webresources.DirResourceSet"
base="/vagrant/workspace/myapp/myapp-services/target/classes" internalPath="/" webAppMount="/WEB-INF/classes" />
<PostResources className="org.apache.catalina.webresources.DirResourceSet"
base="/vagrant/workspace/clocial/myapp-web/target/classes" internalPath="/" webAppMount="/WEB-INF/classes" />
<PostResources className="org.apache.catalina.webresources.DirResourceSet"
base="/vagrant/workspace/myapp/myapp-web/target/lib" internalPath="/" webAppMount="/WEB-INF/lib" />
</Resources>
</Context>
这可行，但 Tomcat 加载上下文需要两分钟以上，因为有一百多个目录。
通过org.apache.catalina.startup.ContextConfig.level = FINE在 conf/logging.properties 中设置，我得到了一条踪迹，告诉我大部分时间可能都花在搜索注释上。
有没有办法告诉Tomcat不要在某些目录中查找注释，以便只扫描实际包含带有注释的类的目录？
我一直在阅读ContextConfig 的源代码，似乎有一些排除规则，但我无法理解它们。
这是 catalina.out 的摘录：
12:39:32.992 INFO org.apache.catalina.startup.HostConfig.deployDescriptor Deploying configuration descriptor [/usr/share/tomcat/conf/Catalina/localhost/mycontext.xml]
12:39:33.092 FINE org.apache.catalina.startup.ContextConfig.init ContextConfig: Initializing
12:39:33.093 FINE org.apache.catalina.startup.ContextConfig.processContextConfig Processing context [/clocial] configuration file [file:/usr/share/tomcat/conf/context.xml]
12:39:33.123 FINE org.apache.catalina.startup.ContextConfig.processContextConfig Successfully processed context [/clocial] configuration file [file:/usr/share/tomcat/conf/context.xml]
12:39:33.123 FINE org.apache.catalina.startup.ContextConfig.processContextConfig Processing context [/clocial] configuration file [file:/usr/share/tomcat/conf/Catalina/localhost/mycontext.xml]
12:39:33.140 FINE org.apache.catalina.startup.ContextConfig.processContextConfig Successfully processed context [/clocial] configuration file [file:/usr/share/tomcat/conf/Catalina/localhost/mycontext.xml]
12:39:47.640 FINE org.apache.catalina.startup.ContextConfig.configureStart ContextConfig: Processing START
12:39:47.641 FINE org.apache.catalina.startup.ContextConfig.configureStart Context [/clocial] will parse web.xml and web-fragment.xml files with validation:[false] and namespaceAware:[false]
12:39:58.524 FINE org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource Scanning web application directory for class files with annotations [file:/vagrant/workspace/myapp/myapp-models/target/classes/com/]
12:40:00.594 FINE org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource Scanning web application directory for class files with annotations [file:/vagrant/workspace/myapp/myapp-models/target/classes/com/mypackage/]
12:40:00.768 FINE org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource Scanning web application directory for class files with annotations [file:/vagrant/workspace/myapp/myapp-models/target/classes/com/mypackage/blob/]
12:40:00.867 FINE org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource Scanning web application directory for class files with annotations [file:/vagrant/workspace/myapp/myapp-models/target/classes/com/mypackage/blob/tables/]
12:40:00.968 FINE org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource Scanning web application directory for class files with annotations [file:/vagrant/workspace/myapp/myapp-models/target/classes/com/mypackage/blob/test/]
...
another hundred directories
...
12:41:07.051 FINE org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource Scanning web application directory for class files with annotations [file:/vagrant/workspace/myapp/myapp-web/target/classes/com/mypackage/mymodel/]
12:41:07.104 FINE org.apache.catalina.startup.ContextConfig.processAnnotationsFile Scanning directory for class files with annotations [/usr/share/tomcat/lib]
12:41:07.142 FINE org.apache.catalina.startup.ContextConfig.authenticatorConfig Configured an authenticator for method [NONE]