端口被占用问题:The Tomcat connector configured to listen on port 8081 failed to start.

本文记录了解决SpringBoot应用在STS环境下启动时遇到端口8081被占用的问题。通过查看端口占用情况,找到并结束占用该端口的进程,或者修改SpringBoot的配置文件更改应用监听端口,成功解决了报错。

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记最近在学springboot,STS(spring tool suite)报错
度了一下整理了三个方法

先上报错

2019-04-29 13:51:14,976 [main] [org.springframework.boot.StartupInfoLogger.logStarting(StartupInfoLogger.java:48)] - [INFO] Starting Application on DESKTOP-U4GVDV7 with PID 2764 (D:\Users\JVeN\Documents\workspace-sts-3.9.8.RELEASE\video-dev\video-dev-mini-api\target\classes started by JVeN in D:\Users\JVeN\Documents\workspace-sts-3.9.8.RELEASE\video-dev\video-dev-mini-api)
2019-04-29 13:51:14,979 [main] [org.springframework.boot.SpringApplication.logStartupProfileInfo(SpringApplication.java:593)] - [INFO] No active profile set, falling back to default profiles: default
2019-04-29 13:51:15,243 [background-preinit] [org.hibernate.validator.internal.util.Version.<clinit>(Version.java:30)] - [INFO] HV000001: Hibernate Validator 5.3.6.Final
2019-04-29 13:51:15,252 [main] [org.springframework.context.support.AbstractApplicationContext.prepareRefresh(AbstractApplicationContext.java:583)] - [INFO] Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@49e202ad: startup date [Mon Apr 29 13:51:15 CST 2019]; root of context hierarchy
2019-04-29 13:51:15,888 [main] [org.mybatis.spring.mapper.ClassPathMapperScanner.doScan(ClassPathMapperScanner.java:166)] - [WARN] No MyBatis mapper was found in '[com.video.mapper]' package. Please check your configuration.
2019-04-29 13:51:16,110 [main] [org.mybatis.spring.mapper.ClassPathMapperScanner.doScan(ClassPathMapperScanner.java:166)] - [WARN] No MyBatis mapper was found in '[com.video]' package. Please check your configuration.
2019-04-29 13:51:16,119 [main] [org.mybatis.spring.mapper.ClassPathMapperScanner.doScan(ClassPathMapperScanner.java:166)] - [WARN] No MyBatis mapper was found in '[com.video]' package. Please check your configuration.
2019-04-29 13:51:16,168 [main] [org.springframework.data.repository.config.RepositoryConfigurationDelegate.multipleStoresDetected(RepositoryConfigurationDelegate.java:165)] - [INFO] Multiple Spring Data modules found, entering strict repository configuration mode!
2019-04-29 13:51:16,621 [main] [org.springframework.context.support.PostProcessorRegistrationDelegate$BeanPostProcessorChecker.postProcessAfterInitialization(PostProcessorRegistrationDelegate.java:327)] - [INFO] Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$cd9f6485] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-04-29 13:51:17,104 [main] [org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.initialize(TomcatEmbeddedServletContainer.java:92)] - [INFO] Tomcat initialized with port(s): 8081 (http)
四月 29, 2019 1:51:17 下午 org.apache.catalina.core.StandardService startInternal
信息: Starting service [Tomcat]
四月 29, 2019 1:51:17 下午 org.apache.catalina.core.StandardEngine startInternal
信息: Starting Servlet Engine: Apache Tomcat/8.5.29
四月 29, 2019 1:51:17 下午 org.apache.catalina.core.ApplicationContext log
信息: Initializing Spring embedded WebApplicationContext
2019-04-29 13:51:17,293 [localhost-startStop-1] [org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.prepareEmbeddedWebApplicationContext(EmbeddedWebApplicationContext.java:276)] - [INFO] Root WebApplicationContext: initialization completed in 2044 ms
2019-04-29 13:51:17,555 [localhost-startStop-1] [org.springframework.boot.web.servlet.ServletRegistrationBean.onStartup(ServletRegistrationBean.java:190)] - [INFO] Mapping servlet: 'dispatcherServlet' to [/]
2019-04-29 13:51:17,557 [localhost-startStop-1] [org.springframework.boot.web.servlet.ServletRegistrationBean.onStartup(ServletRegistrationBean.java:190)] - [INFO] Mapping servlet: 'statViewServlet' to [/druid/*]
2019-04-29 13:51:17,561 [localhost-startStop-1] [org.springframework.boot.web.servlet.AbstractFilterRegistrationBean.configure(AbstractFilterRegistrationBean.java:258)] - [INFO] Mapping filter: 'characterEncodingFilter' to: [/*]
2019-04-29 13:51:17,562 [localhost-startStop-1] [org.springframework.boot.web.servlet.AbstractFilterRegistrationBean.configure(AbstractFilterRegistrationBean.java:258)] - [INFO] Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2019-04-29 13:51:17,562 [localhost-startStop-1] [org.springframework.boot.web.servlet.AbstractFilterRegistrationBean.configure(AbstractFilterRegistrationBean.java:258)] - [INFO] Mapping filter: 'httpPutFormContentFilter' to: [/*]
2019-04-29 13:51:17,563 [localhost-startStop-1] [org.springframework.boot.web.servlet.AbstractFilterRegistrationBean.configure(AbstractFilterRegistrationBean.java:258)] - [INFO] Mapping filter: 'requestContextFilter' to: [/*]
2019-04-29 13:51:17,563 [localhost-startStop-1] [org.springframework.boot.web.servlet.AbstractFilterRegistrationBean.configure(AbstractFilterRegistrationBean.java:271)] - [INFO] Mapping filter: 'webStatFilter' to urls: [/*]
2019-04-29 13:51:18,051 [main] [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.initControllerAdviceCache(RequestMappingHandlerAdapter.java:534)] - [INFO] Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@49e202ad: startup date [Mon Apr 29 13:51:15 CST 2019]; root of context hierarchy
2019-04-29 13:51:18,118 [main] [org.springframework.web.servlet.handler.AbstractHandlerMethodMapping$MappingRegistry.register(AbstractHandlerMethodMapping.java:543)] - [INFO] Mapped "{[/hello]}" onto public java.lang.String com.video.controller.HelloWorldController.Hello()
2019-04-29 13:51:18,124 [main] [org.springframework.web.servlet.handler.AbstractHandlerMethodMapping$MappingRegistry.register(AbstractHandlerMethodMapping.java:543)] - [INFO] Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2019-04-29 13:51:18,125 [main] [org.springframework.web.servlet.handler.AbstractHandlerMethodMapping$MappingRegistry.register(AbstractHandlerMethodMapping.java:543)] - [INFO] Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2019-04-29 13:51:18,166 [main] [org.springframework.web.servlet.handler.AbstractUrlHandlerMapping.registerHandler(AbstractUrlHandlerMapping.java:362)] - [INFO] Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2019-04-29 13:51:18,166 [main] [org.springframework.web.servlet.handler.AbstractUrlHandlerMapping.registerHandler(AbstractUrlHandlerMapping.java:362)] - [INFO] Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2019-04-29 13:51:18,232 [main] [org.springframework.web.servlet.handler.AbstractUrlHandlerMapping.registerHandler(AbstractUrlHandlerMapping.java:362)] - [INFO] Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2019-04-29 13:51:18,296 [main] [org.springframework.boot.autoconfigure.thymeleaf.AbstractTemplateResolverConfiguration.checkTemplateLocationExists(AbstractTemplateResolverConfiguration.java:60)] - [WARN] Cannot find template location: classpath:/templates/ (please add some templates or check your Thymeleaf configuration)
2019-04-29 13:51:19,544 [main] [org.springframework.jmx.export.MBeanExporter.afterSingletonsInstantiated(MBeanExporter.java:431)] - [INFO] Registering beans for JMX exposure on startup
2019-04-29 13:51:19,546 [main] [org.springframework.jmx.export.MBeanExporter.autodetect(MBeanExporter.java:918)] - [INFO] Bean with name 'dataSource' has been autodetected for JMX exposure
2019-04-29 13:51:19,551 [main] [org.springframework.jmx.export.MBeanExporter.registerBeanInstance(MBeanExporter.java:672)] - [INFO] Located MBean 'dataSource': registering with JMX server as MBean [com.alibaba.druid.pool:name=dataSource,type=DruidDataSource]
四月 29, 2019 1:51:19 下午 org.apache.catalina.core.StandardService addConnector
严重: Failed to start connector [Connector[HTTP/1.1-8081]]
org.apache.catalina.LifecycleException: Failed to start component [Connector[HTTP/1.1-8081]]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)
    at org.apache.catalina.core.StandardService.addConnector(StandardService.java:225)
    at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.addPreviouslyRemovedConnectors(TomcatEmbeddedServletContainer.java:265)
    at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.start(TomcatEmbeddedServletContainer.java:208)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.startEmbeddedServletContainer(EmbeddedWebApplicationContext.java:297)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.finishRefresh(EmbeddedWebApplicationContext.java:145)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:546)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107)
    at com.video.Application.main(Application.java:15)
Caused by: org.apache.catalina.LifecycleException: Protocol handler start failed
    at org.apache.catalina.connector.Connector.startInternal(Connector.java:1020)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    ... 13 more
Caused by: java.net.BindException: Address already in use: bind
    at sun.nio.ch.Net.bind0(Native Method)
    at sun.nio.ch.Net.bind(Net.java:433)
    at sun.nio.ch.Net.bind(Net.java:425)
    at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
    at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
    at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:210)
    at org.apache.tomcat.util.net.AbstractEndpoint.start(AbstractEndpoint.java:1150)
    at org.apache.coyote.AbstractProtocol.start(AbstractProtocol.java:591)
    at org.apache.catalina.connector.Connector.startInternal(Connector.java:1018)
    ... 14 more

四月 29, 2019 1:51:19 下午 org.apache.catalina.core.StandardService stopInternal
信息: Stopping service [Tomcat]
2019-04-29 13:51:19,792 [main] [org.springframework.boot.autoconfigure.logging.AutoConfigurationReportLoggingInitializer.logAutoConfigurationReport(AutoConfigurationReportLoggingInitializer.java:101)] - [INFO] 

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2019-04-29 13:51:19,804 [main] [org.springframework.boot.diagnostics.LoggingFailureAnalysisReporter.report(LoggingFailureAnalysisReporter.java:42)] - [ERROR] 

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

Description:

The Tomcat connector configured to listen on port 8081 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 8081, or configure this application to listen on another port.

2019-04-29 13:51:19,806 [main] [org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:984)] - [INFO] Closing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@49e202ad: startup date [Mon Apr 29 13:51:15 CST 2019]; root of context hierarchy
2019-04-29 13:51:19,810 [main] [org.springframework.jmx.export.MBeanExporter.destroy(MBeanExporter.java:449)] - [INFO] Unregistering JMX-exposed beans on shutdown
2019-04-29 13:51:19,811 [main] [org.springframework.jmx.support.MBeanRegistrationSupport.unregisterBeans(MBeanRegistrationSupport.java:241)] - [INFO] Unregistering JMX-exposed beans
 来段翻译:

描述:

配置为监听端口8081的Tomcat连接器启动失败。端口可能已经在使用中,或者连接器可能配置错误。

行动:

验证连接器的配置,识别并停止在端口8081上侦听的任何进程,或者将此应用程序配置为在另一个端口上侦听。

解决端口被占用方法;

方法一:

win+r

输入netstat -ano

查找端口为8081的PID为556(你自己被占用的端口,我的是8081)

下一步:

tasklist | findstr "556"

下一步

taskkill/f /t /im java.exe    这一步是网上的说法是要杀死进程,执行失败但是后来看到另外一个方法让我恍然大悟

网上的方法执行的任务是杀死java.exe这个进程,但是每台电脑的配置环境都不一样,(这里我也不知道我自己语言组织得对不对望大神路过纠正)我看了看任务管理器是javaw.exe在占用8081这个端口所以杀死的应该是javaw.exe这个进程

所以执行命令为  taskkill/f /t /im javaw.exe

方法二:

跟方法一的步骤一一样:先查找除对应被占用端口的PID

然后打开任务管理器,查找对应PID进程,结束任务即可

方法三:简单粗暴

打开application.properties更改端口,用一个没被占用的端口 server.port=8080

 

<think>好的,我现在需要解决Tomcat连接器配置问题端口8080无法启动的问题。首先,用户提供的引用内容中提到了服务器配置、集群设置和自启动问题,但可能和端口冲突直接相关的是引用[1]中的本地主机8080端口访问示例,以及引用[4]提到的端口设置。让我逐步分析可能的原因和解决办法。 第一步,我应该考虑端口冲突。Tomcat默认使用8080端口,如果其他程序占用了该端口Tomcat就无法启动。用户需要检查是否有其他进程在运行。可以通过命令行工具如lsof(Linux/Mac)或netstat(Windows)来查看端口占用情况。例如,在Linux下运行`sudo lsof -i :8080`,找到占用进程并终止它。 第二步,检查Tomcat的配置文件server.xml。连接器的端口设置在这里定义,比如引用[4]提到的worker配置中的端口号。用户需要确认Connector标签中的port属性是否正确,没有语法错误。例如: ```xml <Connector port="8080" protocol="HTTP/1.1" ... /> ``` 如果有其他配置错误,如重复的Connector或无效的协议,也可能导致启动失败。 第三步,检查防火墙或安全组设置。有时候防火墙会阻止8080端口的访问,特别是在云服务器或虚拟主机环境中。用户需要确保防火墙允许入站和出站的8080端口通信。例如,在Linux中使用ufw或iptables配置规则。 第四步,查看Tomcat的日志文件,通常是logs目录下的catalina.out或localhost.log。日志中会有更详细的错误信息,帮助定位问题,比如地址已在使用中或权限不足。例如,如果看到“Address already in use”,说明端口占用;如果是权限问题,可能需要以sudo运行或更改端口号。 另外,引用[3]提到以非root用户运行Tomcat,如果用户之前以root启动过,可能导致某些文件权限问题,切换用户时可能出现端口绑定失败。需要确保Tomcat安装目录和日志文件的权限正确。 最后,如果以上步骤都解决不了,可以尝试更改Tomcat端口号,比如改为8081,测试是否是端口本身的问题。修改server.xml中的port属性后重启Tomcat,如果成功,则原端口确实被占用或封锁。 总结可能的解决方案:检查端口占用、检查配置、查看日志、调整防火墙、修改端口。需要用户根据具体情况逐步排查。</think>### Tomcat连接器端口8080启动失败解决方案 #### 1. 检查端口占用 Tomcat默认使用$8080$端口,若该端口被其他程序占用,会导致启动失败。 - **Linux/Mac**:使用命令 `sudo lsof -i :8080` 或 `netstat -tuln | grep 8080` - **Windows**:使用命令 `netstat -ano | findstr :8080` 若发现占用进程,通过任务管理器或 `kill -9 [PID]` 终止该进程[^1]。 #### 2. 检查Connector配置 在 `conf/server.xml` 中确认Connector配置正确: ```xml <Connector port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> ``` - 检查是否存在重复的Connector标签。 - 若使用AJP协议,需确保对应端口未被占用(默认8009)。 #### 3. 防火墙或安全组限制 - **本地环境**:关闭防火墙或添加8080端口例外规则。 - Linux示例:`sudo ufw allow 8080/tcp` - Windows:通过控制面板调整防火墙设置。 - **云服务器**:在安全组中开放8080端口(TCP协议)。 #### 4. 查看日志定位错误 Tomcat日志文件位于 `logs/catalina.out` 或 `logs/localhost.log`,常见错误包括: - `Address already in use`:端口占用(需执行步骤1)。 - `Permission denied`:非root用户尝试绑定1024以下端口(需切换为root或使用更高端口)。 #### 5. 以管理员权限运行 在Linux中,若需绑定1024以下端口,需以root启动Tomcat: ```bash sudo ./catalina.sh start ``` 但长期运行建议使用非root用户,并配置端口转发[^3]。 #### 6. 修改默认端口 若8080端口不可用,可修改为其他端口(如8081): ```xml <Connector port="8081" protocol="HTTP/1.1" ... /> ``` 重启Tomcat后测试 `http://localhost:8081`。 #### 7. 检查JVM或内存配置 若日志显示内存不足错误,调整 `bin/catalina.sh`(Linux)或 `catalina.bat`(Windows)中的JVM参数: ```bash export JAVA_OPTS="-Xms512m -Xmx1024m" ``` #### 8. 集群配置冲突 若配置了Tomcat集群(引用[2][^2]),检查 `server.xml` 中Engine的 `jvmRoute` 是否唯一,避免端口冲突: ```xml <Engine name="Catalina" defaultHost="localhost" jvmRoute="worker1"> ``` ---
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