最近我已经下载了JDK 11.0.2和Tomcat 9.0.16并设置了环境变量，但是每当我启动tomcat时，它将在控制台中显示以下异常，并且http://localhost:8080/无法访问。 请帮忙。
06-Mar-2019 03:34:43.186 SEVERE [main] org.apache.catalina.util.LifecycleBase.handleSubClassException Failed to initialize component [Connector[HTTP/1.1-8080]] 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:136)
at org.apache.catalina.core.StandardService.initInternal(StandardService.java:535)
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136)
at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:1055)
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136)
at org.apache.catalina.startup.Catalina.load(Catalina.java:589)
at org.apache.catalina.startup.Catalina.load(Catalina.java:612)
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:566)
at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:306)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:491)
Caused by: java.io.IOException: Unable to establish loopback connection
at java.base/sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:94)
at java.base/sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:61)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/sun.nio.ch.PipeImpl.<init>(PipeImpl.java:171)
at java.base/sun.nio.ch.SelectorProviderImpl.openPipe(SelectorProviderImpl.java:50)
at java.base/java.nio.channels.Pipe.open(Pipe.java:155)
at java.base/sun.nio.ch.WindowsSelectorImpl.<init>(WindowsSelectorImpl.java:127)
at java.base/sun.nio.ch.WindowsSelectorProvider.openSelector(WindowsSelectorProvider.java:44)
at java.base/java.nio.channels.Selector.open(Selector.java:295)
at org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector(NioSelectorPool.java:54)
at org.apache.tomcat.util.net.NioSelectorPool.close(NioSelectorPool.java:109)
at org.apache.tomcat.util.net.NioEndpoint.unbind(NioEndpoint.java:338)
at org.apache.tomcat.util.net.AbstractEndpoint.bindWithCleanup(AbstractEndpoint.java:1090)
at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:1098)
at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:557)
at org.apache.coyote.http11.AbstractHttp11Protocol.init(AbstractHttp11Protocol.java:74)
at org.apache.catalina.connector.Connector.initInternal(Connector.java:980)
... 13 more
Caused by: java.net.ConnectException: Connection timed out: connect
at java.base/sun.nio.ch.Net.connect0(Native Method)
at java.base/sun.nio.ch.Net.connect(Net.java:482)
at java.base/sun.nio.ch.Net.connect(Net.java:474)
at java.base/sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:694)
at java.base/java.nio.channels.SocketChannel.open(SocketChannel.java:194)
at java.base/sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(PipeImpl.java:127)
at java.base/sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:76)
... 29 more
我也尝试过使用不同的连接器端口，但是没有用，但是当我在另一台机器上以相同的配置尝试相同的东西时，它可以正常工作并且可以访问本地主机。我的机器有问题吗？