1.問題描述：java
對於建立的springboot項目，經過啓動類啓動，訪問沒問題，但打成war部署到tomcat上啓動報錯，以下：web
嚴重: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1095) at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1930) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.NoSuchMethodError: org.apache.tomcat.util.res.StringManager.getManager(Ljava/lang/Class;)Lorg/apache/tomcat/util/res/StringManager; at org.apache.tomcat.websocket.WsWebSocketContainer.<clinit>(WsWebSocketContainer.java:79) at org.apache.tomcat.websocket.server.WsSci.init(WsSci.java:131) at org.apache.tomcat.websocket.server.WsSci.onStartup(WsSci.java:47) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5506) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) ... 10 more 七月 24, 2018 3:00:16 下午 org.apache.catalina.startup.HostConfig deployWAR 嚴重: Error deploying web application archive D:\tomcat7-8080-eclipse\webapps\ROOT.war java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]] at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:905) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1095) at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1930) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) 七月 24, 2018 3:00:16 下午 org.apache.catalina.startup.HostConfig deployWAR 信息: Deployment of web application archive D:\tomcat7-8080-eclipse\webapps\ROOT.war has finished in 2,494 ms 七月 24, 2018 3:00:16 下午 org.apache.coyote.AbstractProtocol start 信息: Starting ProtocolHandler ["http-bio-8080"] 七月 24, 2018 3:00:16 下午 org.apache.coyote.AbstractProtocol start 信息: Starting ProtocolHandler ["ajp-bio-8089"] 七月 24, 2018 3:00:16 下午 org.apache.catalina.startup.Catalina start 信息: Server startup in 2571 ms
2.問題分析：spring
該錯是因爲application啓動類中嵌入的tomcat與部署war的tomcat衝突引發的，須要在pom.xml添加配置，來避免衝突！apache
3.問題解決：tomcat
修改pom.xml文件，添加依賴以下：springboot
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> <scope>provided</scope> </dependency>