如何解决java.net。BindException:地址已在使用中

通过本教程,我试图在ubuntu 14上通过数字海洋设置tomcat 8服务器 https://www.digitalocean.com/community/tutorials/how-to-install-apache-tomcat-8-on-ubuntu-14-04 。但我无法访问tomcat初始页面。

一切都很顺利,直到我踏上了开始tomcat的台阶

sudo initctl启动tomcat

这将返回一条消息

tomcat启动/运行,进程9180

但当我输入url时

我的滴ip地址:8080

初始页面永远不会加载。

我读到你可以从tomcat开始

sh启动.sh

虽然当我做这个catalina。out给了我错误消息

31-Jul-2016 05:37:41.018 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8080"]
31-Jul-2016 05:37:41.086 SEVERE [main] org.apache.coyote.AbstractProtocol.init Failed to initialize end point associated with ProtocolHandler ["http-nio-8080"]
 java.net.BindException: Address already in use
    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:229)
    at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:866)
    at org.apache.tomcat.util.net.AbstractJsseEndpoint.init(AbstractJsseEndpoint.java:213)
    at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:558)
    at org.apache.coyote.http11.AbstractHttp11Protocol.init(AbstractHttp11Protocol.java:65)
    at org.apache.catalina.connector.Connector.initInternal(Connector.java:1010)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:107)
    at org.apache.catalina.core.StandardService.initInternal(StandardService.java:549)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:107)
    at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:873)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:107)
    at org.apache.catalina.startup.Catalina.load(Catalina.java:606)
    at org.apache.catalina.startup.Catalina.load(Catalina.java:629)
    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.apache.catalina.startup.Bootstrap.load(Bootstrap.java:311)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:494)

31-Jul-2016 05:37:41.089 SEVERE [main] org.apache.catalina.core.StandardService.initInternal Failed to initialize connector [Connector[HTTP/1.1-8080]]
 org.apache.catalina.LifecycleException: Failed to initialize component [Connector[HTTP/1.1-8080]]
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:111)
    at org.apache.catalina.core.StandardService.initInternal(StandardService.java:549)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:107)
    at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:873)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:107)
    at org.apache.catalina.startup.Catalina.load(Catalina.java:606)
    at org.apache.catalina.startup.Catalina.load(Catalina.java:629)
    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.apache.catalina.startup.Bootstrap.load(Bootstrap.java:311)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:494)
Caused by: org.apache.catalina.LifecycleException: Protocol handler initialization failed
    at org.apache.catalina.connector.Connector.initInternal(Connector.java:1012)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:107)
    ... 12 more
Caused by: java.net.BindException: Address already in use
    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:229)
    at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:866)
    at org.apache.tomcat.util.net.AbstractJsseEndpoint.init(AbstractJsseEndpoint.java:213)
    at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:558)
    at org.apache.coyote.http11.AbstractHttp11Protocol.init(AbstractHttp11Protocol.java:65)
    at org.apache.catalina.connector.Connector.initInternal(Connector.java:1010)
    ... 13 more

31-Jul-2016 05:37:41.091 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-nio-8181"]
31-Jul-2016 05:37:41.105 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
31-Jul-2016 05:37:41.117 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 1568 ms
31-Jul-2016 05:37:41.180 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service Catalina
31-Jul-2016 05:37:41.180 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.5.4
31-Jul-2016 05:37:41.211 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /opt/tomcat/webapps/host-manager

我检查了sudo lsof-I使用了哪些端口,并尝试终止使用tomcat所需端口的进程,以及更改服务器中的各种端口。xml以避免此错误。但无论我做什么,它都会不断发生。

https://www.digitalocean.com/community/questions/tomcat-not-starting-in-ubuntu-14-04-tomcat-7-and-java-7

这表明

这可能是由于熵源问题。设置选项

-Djava.security.egd=文件:/dev//卡塔利纳也有铀矿。sh或/etc/default/tomcat。

这方面的问题是,我找不到/etc/default/tomcat文件,也找不到catalina中的位置。sh添加作者建议的这一行。