春季启动-app.groovy-无法运行：配置为在端口8080上侦听的Tomcat连接器无法启动，而8080在侦听

时间：2019-01-30 09:30:18

标签： spring-boot tomcat9

我正在Ubuntu 18.04的家用笔记本电脑上设置堆栈。 到目前为止，已安装Tomcat9和Spring CLI v2.1.2。我正在尝试测试当前安装是否可以正常工作。

根据正式的Spring安装tutorial，完成所有操作后即可运行app.groovy。

app.groovy根据上面链接的页面包含以下代码：

    @RestController
    class ThisWillActuallyRun {

        @RequestMapping("/")
        String home() {
            "Hello, World!"
        }

    }

我从终端使用以下命令运行该应用程序：

    spring run app.groovy

输出如下：

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.codehaus.groovy.vmplugin.v7.Java7$1 (jar:file:/opt/spring/spring-2.1.2.RELEASE/lib/spring-boot-cli-2.1.2.RELEASE.jar!/BOOT-INF/lib/groovy-2.5.5.jar!/) to constructor java.lang.invoke.MethodHandles$Lookup(java.lang.Class,int)
WARNING: Please consider reporting this to the maintainers of org.codehaus.groovy.vmplugin.v7.Java7$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.1.2.RELEASE)

2019-01-30 08:47:30.351  INFO 18651 --- [       runner-0] o.s.boot.SpringApplication               : Starting application on LS-LINUX with PID 18651 (started by ls in /home/ls/Documents)
2019-01-30 08:47:30.376  INFO 18651 --- [       runner-0] o.s.boot.SpringApplication               : No active profile set, falling back to default profiles: default
2019-01-30 08:47:33.196  INFO 18651 --- [       runner-0] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2019-01-30 08:47:33.317  INFO 18651 --- [       runner-0] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2019-01-30 08:47:33.318  INFO 18651 --- [       runner-0] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.14]
2019-01-30 08:47:33.340  INFO 18651 --- [       runner-0] o.a.catalina.core.AprLifecycleListener   : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [/usr/java/packages/lib:/usr/lib/x86_64-linux-gnu/jni:/lib/x86_64-linux-gnu:/usr/lib/x86_64-linux-gnu:/usr/lib/jni:/lib:/usr/lib]
2019-01-30 08:47:33.434  INFO 18651 --- [       runner-0] org.apache.catalina.loader.WebappLoader  : Unknown class loader [org.springframework.boot.cli.compiler.ExtendedGroovyClassLoader$DefaultScopeParentClassLoader@163cf7a3] of class [class org.springframework.boot.cli.compiler.ExtendedGroovyClassLoader$DefaultScopeParentClassLoader]
2019-01-30 08:47:33.517  INFO 18651 --- [       runner-0] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2019-01-30 08:47:33.518  INFO 18651 --- [       runner-0] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 2617 ms
2019-01-30 08:47:34.014  INFO 18651 --- [       runner-0] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2019-01-30 08:47:34.886 ERROR 18651 --- [       runner-0] org.apache.catalina.util.LifecycleBase   : Failed to start component [Connector[HTTP/1.1-8080]]

org.apache.catalina.LifecycleException: Protocol handler start failed
    at org.apache.catalina.connector.Connector.startInternal(Connector.java:1004) ~[tomcat-embed-core-9.0.14.jar:9.0.14]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.14.jar:9.0.14]
    at org.apache.catalina.core.StandardService.addConnector(StandardService.java:226) [tomcat-embed-core-9.0.14.jar:9.0.14]
    at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.addPreviouslyRemovedConnectors(TomcatWebServer.java:259) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
    at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:197) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.startWebServer(ServletWebServerApplicationContext.java:311) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:164) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) [spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
    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:564) ~[na:na]
    at org.springframework.boot.cli.app.SpringApplicationLauncher.launch(SpringApplicationLauncher.java:69) [classes!/:2.1.2.RELEASE]
    at org.springframework.boot.cli.command.run.SpringApplicationRunner$RunThread.run(SpringApplicationRunner.java:173) [classes!/:2.1.2.RELEASE]
Caused by: java.net.BindException: Address already in use
    at java.base/sun.nio.ch.Net.bind0(Native Method) ~[na:na]
    at java.base/sun.nio.ch.Net.bind(Net.java:433) ~[na:na]
    at java.base/sun.nio.ch.Net.bind(Net.java:425) ~[na:na]
    at java.base/sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:225) ~[na:na]
    at java.base/sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74) ~[na:na]
    at org.apache.tomcat.util.net.NioEndpoint.initServerSocket(NioEndpoint.java:236) ~[tomcat-embed-core-9.0.14.jar:9.0.14]
    at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:210) ~[tomcat-embed-core-9.0.14.jar:9.0.14]
    at org.apache.tomcat.util.net.AbstractEndpoint.bindWithCleanup(AbstractEndpoint.java:1085) ~[tomcat-embed-core-9.0.14.jar:9.0.14]
    at org.apache.tomcat.util.net.AbstractEndpoint.start(AbstractEndpoint.java:1171) ~[tomcat-embed-core-9.0.14.jar:9.0.14]
    at org.apache.coyote.AbstractProtocol.start(AbstractProtocol.java:568) ~[tomcat-embed-core-9.0.14.jar:9.0.14]
    at org.apache.catalina.connector.Connector.startInternal(Connector.java:1001) ~[tomcat-embed-core-9.0.14.jar:9.0.14]
    ... 17 common frames omitted

2019-01-30 08:47:34.896  INFO 18651 --- [       runner-0] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2019-01-30 08:47:34.912  INFO 18651 --- [       runner-0] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2019-01-30 08:47:34.919 ERROR 18651 --- [       runner-0] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

The Tomcat connector configured to listen on port 8080 failed to start. The port may already be in use or the connector may be misconfigured.

Action:

Verify the connector's configuration, identify and stop any process that's listening on port 8080, or configure this application to listen on another port.

2019-01-30 08:47:34.920 ERROR 18651 --- [       runner-0] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

The Tomcat connector configured to listen on port 8080 failed to start. The port may already be in use or the connector may be misconfigured.

Action:

Verify the connector's configuration, identify and stop any process that's listening on port 8080, or configure this application to listen on another port.

2019-01-30 08:47:34.923  INFO 18651 --- [       runner-0] o.s.s.concurrent.ThreadPoolTaskExecutor  : Shutting down ExecutorService 'applicationTaskExecutor'
java.lang.reflect.InvocationTargetException
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at org.springframework.boot.cli.app.SpringApplicationLauncher.launch(SpringApplicationLauncher.java:69)
    at org.springframework.boot.cli.command.run.SpringApplicationRunner$RunThread.run(SpringApplicationRunner.java:173)
Caused by: org.springframework.boot.web.embedded.tomcat.ConnectorStartFailedException: Connector configured to listen on port 8080 failed to start
    at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.checkConnectorHasStarted(TomcatWebServer.java:232)
    at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.checkThatConnectorsHaveStarted(TomcatWebServer.java:224)
    at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:202)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.startWebServer(ServletWebServerApplicationContext.java:311)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:164)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:316)
    ... 6 more

我从多个来源阅读到，端口8080可能被另一个正在运行的应用程序占用。我试图找出问题所在。我使用了两个命令来检查端口8080的使用情况。

1。

    sudo netstat -plnt | grep ':8080'

答案：

    tcp6       0      0 :::8080    :::*      LISTEN  21659/java

2。

    sudo lsof -i:8080

答案：

    COMMAND   PID   USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
    java    21659 tomcat   41u  IPv6 239756      0t0  TCP *:http-alt (LISTEN)

当我打开http://127.0.0.1:8080/或http://localhost:8080/时 我得到了tomcat欢迎页面，上面显示了成功安装tomcat的文本。 “如果您看到此消息，则说明您已经成功安装了Tomcat。恭喜！”

您能告诉我我做错了什么以及解决方案可能是什么吗？

1 个答案:

答案 0 :(得分：0)

我在Spring Boot Suite中也收到了这类错误，问题得到解决， 问题是因为tomcat已经在计算机上运行了，为了解决该问题，您应该首先停止服务器，然后尝试再次运行该项目。

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