java Vaadin启动器项目未运行

lhcgjxsq  于 2023-01-16  发布在  Java
关注(0)|答案(2)|浏览(113)

我尝试在IntelliJ中运行Vaadin的启动器项目，但只得到以下错误：我安装了Vaadin和Maven，也是JDK的最新版本。
我不知道为什么它不工作，我遵循了完整的初学者教程的Vaadin，但只得到这个错误

2023-01-13 10:53:04.578 ERROR 17752 --- [  restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/]       : Exception sending context initialized event to listener instance of class [com.vaadin.flow.spring.VaadinServletContextInitializer$CompositeServletContextListener]

java.lang.RuntimeException: Unable to initialize com.vaadin.flow.spring.VaadinServletContextInitializer$DevModeServletContextListener
    at com.vaadin.flow.spring.VaadinServletContextInitializer$FailFastServletContextListener.contextInitialized(VaadinServletContextInitializer.java:192) ~[vaadin-spring-23.3.2.jar:na]
    at com.vaadin.flow.spring.VaadinServletContextInitializer$CompositeServletContextListener.lambda$contextInitialized$0(VaadinServletContextInitializer.java:214) ~[vaadin-spring-23.3.2.jar:na]
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) ~[na:na]
    at com.vaadin.flow.spring.VaadinServletContextInitializer$CompositeServletContextListener.contextInitialized(VaadinServletContextInitializer.java:214) ~[vaadin-spring-23.3.2.jar:na]
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4767) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5231) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317) ~[na:na]
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:145) ~[na:na]
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:835) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317) ~[na:na]
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:145) ~[na:na]
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:265) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:432) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) ~[tomcat-embed-core-9.0.68.jar:9.0.68]
    at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:479) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:211) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:184) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:162) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:577) ~[spring-context-5.3.23.jar:5.3.23]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) ~[spring-boot-2.7.5.jar:2.7.5]
    at com.example.application.Application.main(Application.java:22) ~[classes/:na]
    at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]
    at java.base/java.lang.reflect.Method.invoke(Method.java:578) ~[na:na]
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.7.5.jar:2.7.5]
Caused by: java.lang.IllegalStateException: Failed to determine project directory for dev mode. Directory 'C:\j2ee\projekte\my-todo' does not look like a Maven or Gradle project. Ensure that you have run the prepare-frontend Maven goal, which generates 'flow-build-info.json', prior to deploying your application
    at com.vaadin.base.devserver.startup.DevModeInitializer.getBaseDirectoryFallback(DevModeInitializer.java:404) ~[vaadin-dev-server-23.3.2.jar:na]
    at com.vaadin.base.devserver.startup.DevModeInitializer.initDevModeHandler(DevModeInitializer.java:216) ~[vaadin-dev-server-23.3.2.jar:na]
    at com.vaadin.base.devserver.DevModeHandlerManagerImpl.initDevModeHandler(DevModeHandlerManagerImpl.java:81) ~[vaadin-dev-server-23.3.2.jar:na]
    at com.vaadin.flow.spring.VaadinServletContextInitializer$DevModeServletContextListener.failFastContextInitialized(VaadinServletContextInitializer.java:475) ~[vaadin-spring-23.3.2.jar:na]
    at com.vaadin.flow.spring.VaadinServletContextInitializer$FailFastServletContextListener.contextInitialized(VaadinServletContextInitializer.java:188) ~[vaadin-spring-23.3.2.jar:na]
    ... 44 common frames omitted

2023-01-13 10:53:04.578 ERROR 17752 --- [  restartedMain] o.apache.catalina.core.StandardContext   : One or more listeners failed to start. Full details will be found in the appropriate container log file
2023-01-13 10:53:04.579 ERROR 17752 --- [  restartedMain] o.apache.catalina.core.StandardContext   : Context [] startup failed due to previous errors
2023-01-13 10:53:04.607  INFO 17752 --- [  restartedMain] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2023-01-13 10:53:04.610  WARN 17752 --- [  restartedMain] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
2023-01-13 10:53:04.617  INFO 17752 --- [  restartedMain] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2023-01-13 10:53:04.635 ERROR 17752 --- [  restartedMain] o.s.boot.SpringApplication               : Application run failed

org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:165) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:577) ~[spring-context-5.3.23.jar:5.3.23]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) ~[spring-boot-2.7.5.jar:2.7.5]
    at com.example.application.Application.main(Application.java:22) ~[classes/:na]
    at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]
    at java.base/java.lang.reflect.Method.invoke(Method.java:578) ~[na:na]
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.7.5.jar:2.7.5]
Caused by: org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
    at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:142) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:479) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:211) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:184) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:162) ~[spring-boot-2.7.5.jar:2.7.5]
    ... 11 common frames omitted
Caused by: java.lang.IllegalStateException: StandardEngine[Tomcat].StandardHost[localhost].TomcatEmbeddedContext[] failed to start
    at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.rethrowDeferredStartupExceptions(TomcatWebServer.java:187) ~[spring-boot-2.7.5.jar:2.7.5]
    at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:126) ~[spring-boot-2.7.5.jar:2.7.5]
    ... 16 common frames omitted

Process finished with exit code 0

我什么都试过了，但找不到任何解决办法。

Java

2条答案

按热度按时间
67up9zun

67up9zun1#

如果在IntelliJ IDEA中导入父目录而不是导入项目目录本身，则可能会发生这种情况

赞(0）分享  回复(0）举报  2023-01-16
w6mmgewl

w6mmgewl2#

查看堆栈跟踪时，以下内容引起了我的注意：

Caused by: java.lang.IllegalStateException: Failed to determine project directory for dev mode. Directory 'C:\j2ee\projekte\my-todo' does not look like a Maven or Gradle project. Ensure that you have run the prepare-frontend Maven goal, which generates 'flow-build-info.json', prior to deploying your application

这可能意味着问题出在pom.xml文件中。您是否导入了vaadin-maven-plugin？您是如何生成这个pom.xml的？您是否从现有的存储库/项目/示例下载了它？

赞(0）分享  回复(0）举报  2023-01-16
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