Maven项目Tomcat无法正常启动

小编在学习maven项目开发的时候，启动Tomcat时，乍一看，Tomcat咋没起来，还给我报了一堆错误，仔细一看8080端口被占用了。首先就要考虑是不是自己原来开的Tomcat服务进程尚未结束，如果还没有结束，那就结束它的生命就好了。

严重: Error initializing endpoint
java.net.BindException: Address already in use: JVM_Bind :8080
	at org.apache.tomcat.util.net.JIoEndpoint.init(JIoEndpoint.java:549)
	at org.apache.coyote.http11.Http11Protocol.init(Http11Protocol.java:176)
	at org.apache.catalina.connector.Connector.initialize(Connector.java:1014)
	at org.apache.catalina.startup.Embedded.start(Embedded.java:830)
	at org.codehaus.mojo.tomcat.AbstractRunMojo.startContainer(AbstractRunMojo.java:558)
	at org.codehaus.mojo.tomcat.AbstractRunMojo.execute(AbstractRunMojo.java:255)
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:154)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:146)
	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:290)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:194)
	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:289)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
	at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
	at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
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:106)
	at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:387)
	at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:190)
	at java.net.ServerSocket.bind(ServerSocket.java:375)
	at java.net.ServerSocket.(ServerSocket.java:237)
	at java.net.ServerSocket.(ServerSocket.java:181)
	at org.apache.tomcat.util.net.DefaultServerSocketFactory.createSocket(DefaultServerSocketFactory.java:50)
	at org.apache.tomcat.util.net.JIoEndpoint.init(JIoEndpoint.java:538)
	... 27 more

如果不是自己的Tomcat进程没结束，那么就要考虑了，是不是自己Tomcat的端口号不是8080，如果不是8080端口，那么在Run as -> Maven build..中输入的Goal命令是需要稍加注意了：

-Dmaven.tomcat.port=8090 tomcat:run

诶，这样应该就差不多了。