我想改善持续交付。我正在使用Tomcat 8和Maven。
我使用mvn tomcat:redeploy部署Web应用程序。
在tomcat documentation中，我找到了这一部分:
FAIL的可能原因之一是间歇:
所以我想在启动时抛出异常，所以我在web.xml中写道:
到org.springframework.web.servlet.DispatcherServlet -Servlet。然后我写一个单例:
@Service
public class AvoidStartupOnMissingDatabase implements SmartInitializingSingleton {
@Override
public void afterSingletonsInstantiated() {
throw new RuntimeException("Do not deploy this app!");
}
}
java.lang.RuntimeException: Do not deploy this app!
at xxx.AvoidStartupOnMissingDatabase.afterSingletonsInstantiated(AvoidStartupOnMissingDatabase.java:11)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:775)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:762)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:664)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:630)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:678)
at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:549)
at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:490)
at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
at javax.servlet.GenericServlet.init(GenericServlet.java:158)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1144)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1091)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:983)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4962)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5274)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3823)
at org.apache.catalina.startup.HostConfig.reload(HostConfig.java:1410)
at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1320)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1648)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1525)
at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:773)
at org.apache.catalina.manager.ManagerServlet.doPut(ManagerServlet.java:443)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:664)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:613)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:486)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
不幸的是，该应用程序已部署!
问题
我没有通过初始化。我说的是启动时加载。 Tomcat说如果不启动就会失败。 Tomcat说(重新)部署是否可以启动。
因此，异常必须使部署失败。正确的？
编辑
我测试了tomcat-8.5.30和tomcat-8.5.37，不幸的是都成功了。
最佳答案
iv创建了一个bug in Tomcat。开发人员引导我找到解决方案
类似于Alexandru Cojocaru。
我从Servlet转移到SerlvetContextListener，并成功收到部署失败的消息。
无效的部署之后，很遗憾，旧应用程序是而不是重新启动。但是对svn的提交已成功取消，并且没有添加到svn-change-log中!