tomcat啟動(dòng)報(bào)錯(cuò):一個(gè)或多個(gè)listeners啟動(dòng)失敗

這種錯(cuò)誤一般是在javaweb項(xiàng)目中使用監(jiān)聽器時(shí)出現(xiàn)的。

造成的原因時(shí)

沒有在web.xml文件中配置全局參數(shù)。

如圖：

具體原理

當(dāng)我們使用spring自帶的工具類WebApplicationContextUtils時(shí)，在它的方法ContextLoaderListener方法中，會(huì)在web應(yīng)用啟動(dòng)時(shí)就加載配置文件（為了防止每次執(zhí)行業(yè)務(wù)都加載一次配置文件和spring容器，節(jié)約內(nèi)存），所以把每次要加載的配置文件抽取出來，做成一個(gè)全局參數(shù)，得到后，繼而創(chuàng)建上下文對象Application，并將其存儲(chǔ)到最大的域ServletContext中，從而可以在任何地方獲得并使用Application對象。

**注：**如果是自己寫的監(jiān)聽器，上圖中不需要寫classpath：

啟動(dòng)tomcat服務(wù)器時(shí)出現(xiàn)錯(cuò)誤

啟動(dòng)Tomcat服務(wù)器時(shí)出現(xiàn)如下錯(cuò)誤：

解決方式

是因?yàn)門omcat服務(wù)器啟動(dòng)多次，導(dǎo)致服務(wù)器的端口被占用，關(guān)閉服務(wù)器，然后重新啟動(dòng)就可以了。

六月 23, 2023 7:01:29 上午 org.apache.coyote.AbstractProtocol init信息: Initializing ProtocolHandler ["http-bio-80"]六月 23, 2023 7:01:29 上午 org.apache.coyote.AbstractProtocol init嚴(yán)重: Failed to initialize end point associated with ProtocolHandler ["http-bio-80"]java.net.BindException: Address already in use: JVM_Bind <null>:80    at org.apache.tomcat.util.net.JIoEndpoint.bind(JIoEndpoint.java:406)    at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:610)    at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:429)    at org.apache.coyote.http11.AbstractHttp11JsseProtocol.init(AbstractHttp11JsseProtocol.java:119)    at org.apache.catalina.connector.Connector.initInternal(Connector.java:981)    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)    at org.apache.catalina.core.StandardService.initInternal(StandardService.java:559)    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)    at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:814)    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)    at org.apache.catalina.startup.Tomcat.start(Tomcat.java:335)    at org.apache.tomcat.maven.plugin.tomcat7.run.AbstractRunMojo.startContainer(AbstractRunMojo.java:1091)    at org.apache.tomcat.maven.plugin.tomcat7.run.AbstractRunMojo.execute(AbstractRunMojo.java:512)    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:56)    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:305)    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:192)    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:105)    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:956)    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)    at org.apache.maven.cli.MavenCli.main(MavenCli.java:192)    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)    at java.lang.reflect.Method.invoke(Method.java:498)    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:282)    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:225)    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:406)    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:347)    at org.codehaus.classworlds.Launcher.main(Launcher.java:47)Caused by: java.net.BindException: Address already in use: JVM_Bind    at java.net.DualStackPlainSocketImpl.bind0(Native Method)    at java.net.DualStackPlainSocketImpl.socketBind(DualStackPlainSocketImpl.java:102)    at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:513)    at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:180)    at java.net.ServerSocket.bind(ServerSocket.java:375)    at java.net.ServerSocket.<init>(ServerSocket.java:237)    at java.net.ServerSocket.<init>(ServerSocket.java:181)    at org.apache.tomcat.util.net.DefaultServerSocketFactory.createSocket(DefaultServerSocketFactory.java:49)    at org.apache.tomcat.util.net.JIoEndpoint.bind(JIoEndpoint.java:393)    ... 36 more

六月 23, 2023 7:01:29 上午 org.apache.catalina.core.StandardService initInternal嚴(yán)重: Failed to initialize connector [Connector[HTTP/1.1-80]]org.apache.catalina.LifecycleException: Failed to initialize component [Connector[HTTP/1.1-80]]    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:106)    at org.apache.catalina.core.StandardService.initInternal(StandardService.java:559)    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)    at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:814)    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)    at org.apache.catalina.startup.Tomcat.start(Tomcat.java:335)    at org.apache.tomcat.maven.plugin.tomcat7.run.AbstractRunMojo.startContainer(AbstractRunMojo.java:1091)    at org.apache.tomcat.maven.plugin.tomcat7.run.AbstractRunMojo.execute(AbstractRunMojo.java:512)    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:56)    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:305)    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:192)    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:105)    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:956)    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)    at org.apache.maven.cli.MavenCli.main(MavenCli.java:192)    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)    at java.lang.reflect.Method.invoke(Method.java:498)    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:282)    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:225)    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:406)    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:347)    at org.codehaus.classworlds.Launcher.main(Launcher.java:47)Caused by: org.apache.catalina.LifecycleException: Protocol handler initialization failed    at org.apache.catalina.connector.Connector.initInternal(Connector.java:983)    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)    ... 31 moreCaused by: java.net.BindException: Address already in use: JVM_Bind <null>:80    at org.apache.tomcat.util.net.JIoEndpoint.bind(JIoEndpoint.java:406)    at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:610)    at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:429)    at org.apache.coyote.http11.AbstractHttp11JsseProtocol.init(AbstractHttp11JsseProtocol.java:119)    at org.apache.catalina.connector.Connector.initInternal(Connector.java:981)    ... 32 moreCaused by: java.net.BindException: Address already in use: JVM_Bind    at java.net.DualStackPlainSocketImpl.bind0(Native Method)    at java.net.DualStackPlainSocketImpl.socketBind(DualStackPlainSocketImpl.java:102)    at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:513)    at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:180)    at java.net.ServerSocket.bind(ServerSocket.java:375)    at java.net.ServerSocket.<init>(ServerSocket.java:237)    at java.net.ServerSocket.<init>(ServerSocket.java:181)    at org.apache.tomcat.util.net.DefaultServerSocketFactory.createSocket(DefaultServerSocketFactory.java:49)    at org.apache.tomcat.util.net.JIoEndpoint.bind(JIoEndpoint.java:393)    ... 36 more

六月 23, 2023 7:01:29 上午 org.apache.catalina.core.StandardService startInternal信息: Starting service Tomcat六月 23, 2023 7:01:29 上午 org.apache.catalina.core.StandardEngine startInternal信息: Starting Servlet Engine: Apache Tomcat/7.0.37 

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