记一次springboot整合websocket部署报错：Error creating bean with name 'serverEndpointExporter'
错误信息为
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'serverEndpointExporter' defined in class path resource [com/kpzdh/kp/config/websocket/WebSocketConfig.class]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: javax.websocket.server.ServerContainer not available
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1778) ~[spring-beans-5.1.9.RELEASE.jar:5.1.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593) ~[spring-beans-5.1.9.RELEASE.jar:5.1.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) ~[spring-beans-5.1.9.RELEASE.jar:5.1.9.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.9.RELEASE.jar:5.1.9.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.9.RELEASE.jar:5.1.9.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.9.RELEASE.jar:5.1.9.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.9.RELEASE.jar:5.1.9.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:845) ~[spring-beans-5.1.9.RELEASE.jar:5.1.9.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877) ~[spring-context-5.1.9.RELEASE.jar:5.1.9.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.1.9.RELEASE.jar:5.1.9.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.1.8.RELEASE.jar:2.1.8.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:744) ~[spring-boot-2.1.8.RELEASE.jar:2.1.8.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:391) ~[spring-boot-2.1.8.RELEASE.jar:2.1.8.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:312) ~[spring-boot-2.1.8.RELEASE.jar:2.1.8.RELEASE]
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:151) ~[spring-boot-2.1.8.RELEASE.jar:2.1.8.RELEASE]
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:131) ~[spring-boot-2.1.8.RELEASE.jar:2.1.8.RELEASE]
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:91) ~[spring-boot-2.1.8.RELEASE.jar:2.1.8.RELEASE]
at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:171) ~[spring-web-5.1.9.RELEASE.jar:5.1.9.RELEASE]
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5132) ~[catalina.jar:9.0.21]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[catalina.jar:9.0.21]
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:717) ~[catalina.jar:9.0.21]
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:690) ~[catalina.jar:9.0.21]
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:705) ~[catalina.jar:9.0.21]
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:978) ~[catalina.jar:9.0.21]
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1849) ~[catalina.jar:9.0.21]
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[na:na]
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-util.jar:9.0.21]
at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:118) ~[na:na]
at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:773) ~[catalina.jar:9.0.21]
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:427) ~[catalina.jar:9.0.21]
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1576) ~[catalina.jar:9.0.21]
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:309) ~[catalina.jar:9.0.21]
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123) ~[catalina.jar:9.0.21]
at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:423) ~[catalina.jar:9.0.21]
at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:366) ~[catalina.jar:9.0.21]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:936) ~[catalina.jar:9.0.21]
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841) ~[catalina.jar:9.0.21]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[catalina.jar:9.0.21]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[catalina.jar:9.0.21]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[catalina.jar:9.0.21]
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-util.jar:9.0.21]
at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[catalina.jar:9.0.21]
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) ~[catalina.jar:9.0.21]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[catalina.jar:9.0.21]
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421) ~[catalina.jar:9.0.21]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[catalina.jar:9.0.21]
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:932) ~[catalina.jar:9.0.21]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[catalina.jar:9.0.21]
at org.apache.catalina.startup.Catalina.start(Catalina.java:633) ~[catalina.jar:9.0.21]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:344) ~[bootstrap.jar:9.0.21]
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:475) ~[bootstrap.jar:9.0.21]
Caused by: java.lang.IllegalStateException: javax.websocket.server.ServerContainer not available
at org.springframework.util.Assert.state(Assert.java:73) ~[spring-core-5.1.9.RELEASE.jar:5.1.9.RELEASE]
at org.springframework.web.socket.server.standard.ServerEndpointExporter.afterPropertiesSet(ServerEndpointExporter.java:106) ~[spring-websocket-5.1.9.RELEASE.jar:5.1.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1837) ~[spring-beans-5.1.9.RELEASE.jar:5.1.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1774) ~[spring-beans-5.1.9.RELEASE.jar:5.1.9.RELEASE]
... 57 common frames omitted
在我代码中有这样一个配置类，是为了自动注册使用了@ServerEndpoint注解声明的 Websocket endpoint，开发阶段该配置会自动依赖springboot内嵌tomcat容器
@Configuration
public class WebSocketConfig {
@Bean
public ServerEndpointExporter serverEndpointExporter() {
return new ServerEndpointExporter();
}
}
但是war包的项目内嵌tomcat是不会在打包之后运行的，也就是说打包之后websocket没有依赖到tomcat容器，所以只需要把上面的配置类删除即可
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>