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這篇文章主要講解了“java啟動時報線程占用報錯Exception in thread “Thread-14“怎么解決”，文中的講解內(nèi)容簡單清晰，易于學(xué)習(xí)與理解，下面請大家跟著小編的思路慢慢深入，一起來研究和學(xué)習(xí)“java啟動時報線程占用報錯Exception in thread “Thread-14“怎么解決”吧！
啟動項目后拋出異常，但是奇怪的是執(zhí)行器在任務(wù)調(diào)度中心中注冊成功，也能成功執(zhí)行
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( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
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:: Spring Boot :: (v2.2.2.RELEASE)
2023-02-14 11:22:15.516 INFO 4436 --- [ main] com.jxj.SafetyWebserverApplication : Starting SafetyWebserverApplication on abc with PID 4436 (C:\project\safetyproduction_collectdata\target\classes started by whx in C:\project\safetyproduction_collectdata)
2023-02-14 11:22:15.521 INFO 4436 --- [ main] com.jxj.SafetyWebserverApplication : No active profile set, falling back to default profiles: default
2023-02-14 11:22:16.722 INFO 4436 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
....
2023-02-14 11:22:19.191 INFO 4436 --- [ main] o.s.s.c.ThreadPoolTaskScheduler : Initializing ExecutorService 'taskScheduler'
2023-02-14 11:22:19.394 INFO 4436 --- [ main] com.jxj.config.XxlJobConfig : >>>>>>>>>>> xxl-job config init.
2023-02-14 11:22:19.666 INFO 4436 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2023-02-14 11:22:20.271 INFO 4436 --- [ main] c.xxl.job.core.executor.XxlJobExecutor : >>>>>>>>>>> xxl-job register jobhandler success, name:demoJobHandler, jobHandler:com.xxl.job.core.handler.impl.MethodJobHandler@c6bf8d9[class com.jxj.task.WarningTask#demoJobHandler]
2023-02-14 11:22:20.585 INFO 4436 --- [ main] o.s.i.endpoint.EventDrivenConsumer : Adding {logging-channel-adapter:_org.springframework.integration.errorLogger} as a subscriber to the 'errorChannel' channel
2023-02-14 11:22:20.586 INFO 4436 --- [ main] o.s.i.channel.PublishSubscribeChannel : Channel 'application.errorChannel' has 1 subscriber(s).
2023-02-14 11:22:20.586 INFO 4436 --- [ main] o.s.i.endpoint.EventDrivenConsumer : started bean '_org.springframework.integration.errorLogger'
2023-02-14 11:22:20.586 INFO 4436 --- [ main] o.s.i.endpoint.EventDrivenConsumer : Adding {message-handler:mqttPublisherConfig.mqttOutbound.serviceActivator} as a subscriber to the 'mqttOutboundChannel' channel
2023-02-14 11:22:20.586 INFO 4436 --- [ main] o.s.integration.channel.DirectChannel : Channel 'application.mqttOutboundChannel' has 1 subscriber(s).
2023-02-14 11:22:20.600 INFO 4436 --- [ main] o.s.i.endpoint.EventDrivenConsumer : started bean 'mqttPublisherConfig.mqttOutbound.serviceActivator'
2023-02-14 11:22:20.600 INFO 4436 --- [ main] o.s.i.endpoint.EventDrivenConsumer : Adding {message-handler:mqttSenderConfig.mqttOutbound.serviceActivator} as a subscriber to the 'mqttOutboundChannel1' channel
2023-02-14 11:22:20.601 INFO 4436 --- [ main] o.s.integration.channel.DirectChannel : Channel 'application.mqttOutboundChannel1' has 1 subscriber(s).
2023-02-14 11:22:20.601 INFO 4436 --- [ main] o.s.i.endpoint.EventDrivenConsumer : started bean 'mqttSenderConfig.mqttOutbound.serviceActivator'
2023-02-14 11:22:20.601 INFO 4436 --- [ main] o.s.i.endpoint.EventDrivenConsumer : Adding {message-handler:mqttSubscriberConfig.handler.serviceActivator} as a subscriber to the 'mqttInboundChannel' channel
2023-02-14 11:22:20.601 INFO 4436 --- [ main] o.s.integration.channel.DirectChannel : Channel 'application.mqttInboundChannel' has 1 subscriber(s).
2023-02-14 11:22:20.601 INFO 4436 --- [ main] o.s.i.endpoint.EventDrivenConsumer : started bean 'mqttSubscriberConfig.handler.serviceActivator'
2023-02-14 11:22:20.601 INFO 4436 --- [ main] ProxyFactoryBean$MethodInvocationGateway : started bean 'mqttGateway'
2023-02-14 11:22:20.601 INFO 4436 --- [ main] ProxyFactoryBean$MethodInvocationGateway : started bean 'mqttGateway'
2023-02-14 11:22:20.601 INFO 4436 --- [ main] ProxyFactoryBean$MethodInvocationGateway : started bean 'mqttGateway'
2023-02-14 11:22:20.601 INFO 4436 --- [ main] o.s.i.gateway.GatewayProxyFactoryBean : started bean 'mqttGateway'
Exception in thread "Thread-17" java.net.BindException: Address already in use: bind
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:433)
at sun.nio.ch.Net.bind(Net.java:425)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:134)
at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:551)
at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1346)
at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:503)
at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:488)
at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:985)
at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:247)
at io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:344)
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute$$$capture(AbstractEventExecutor.java:163)
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:510)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:518)
at io.netty.util.concurrent.SingleThreadEventExecutor$6.run(SingleThreadEventExecutor.java:1050)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.lang.Thread.run(Thread.java:748)
2023-02-14 11:22:21.444 INFO 4436 --- [ main] .m.i.MqttPahoMessageDrivenChannelAdapter : started bean 'inbound'; defined in: 'class path resource [com/jxj/config/MqttSubscriberConfig.class]'; from source: 'org.springframework.core.type.classreading.SimpleMethodMetadata@1d4664d7'
2023-02-14 11:22:21.446 INFO 4436 --- [ main] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [localhost:5672]
2023-02-14 11:22:25.537 INFO 4436 --- [ main] o.s.a.r.l.SimpleMessageListenerContainer : Broker not available; cannot force queue declarations during start: java.net.ConnectException: Connection refused: connect
2023-02-14 11:22:25.545 INFO 4436 --- [ntContainer#0-1] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [localhost:5672]網(wǎng)上有的說通過
在低版本的 xxl-job 中， 初始化XxlJobSpringExecutor執(zhí)行器需要在@Bean中加上 initMethod = "start", destroyMethod = "destroy"，但是在高版本的 xxl-job（如 2.1.2）則需要刪除 initMethod = "start", destroyMethod = "destroy"
而我的問題不是在bean上加(initMethod = “start”, destroyMethod = “destroy”)，我加上之后會報兩遍線程被使用的異常。
Exception in thread "Thread-14" 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 io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:134) at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:551) at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1346) at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:503) at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:488) at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:985) at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:247) at io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:344) at io.netty.util.concurrent.AbstractEventExecutor.safeExecute$$$capture(AbstractEventExecutor.java:163) at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java) at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:510) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:518) at io.netty.util.concurrent.SingleThreadEventExecutor$6.run(SingleThreadEventExecutor.java:1050) at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) at java.lang.Thread.run(Thread.java:748) 2023-02-14 11:25:20.568 INFO 18140 --- [ main] c.xxl.job.core.executor.XxlJobExecutor : >>>>>>>>>>> xxl-job register jobhandler success, name:demoJobHandler, jobHandler:com.xxl.job.core.handler.impl.MethodJobHandler@1618c98a[class com.jxj.task.WarningTask#demoJobHandler] Exception in thread "Thread-20" java.net.BindException: Address already in use: bind at sun.nio.ch.Net.bind0(Native Method) at sun.nio.ch.Net.bind(Net.java:433) at sun.nio.ch.Net.bind(Net.java:425) at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223) at io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:134) at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:551) at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1346) at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:503) at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:488) at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:985) at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:247) at io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:344) at io.netty.util.concurrent.AbstractEventExecutor.safeExecute$$$capture(AbstractEventExecutor.java:163) at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java) at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:510) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:518) at io.netty.util.concurrent.SingleThreadEventExecutor$6.run(SingleThreadEventExecutor.java:1050) at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) at java.lang.Thread.run(Thread.java:748)
//原注解：
@Bean
public XxlJobSpringExecutor xxlJobExecutor() {
...
}
//修改后注解
@Bean(initMethod = "start", destroyMethod = "destroy")
public XxlJobSpringExecutor xxlJobExecutor() {
...
}后來我發(fā)現(xiàn)我的問題是 本地和線上的程序連接了相同的xxl-job，并且連接xxl-job的端口是一樣的，導(dǎo)致了這個問題！
xxl: job: accessToken: xxx admin: # addresses: http://1xxxxx/xxl-job-admin addresses: http://39xxxxx/xxl-job-admin executor: address: 'xxx' appname: safexxxxxst #這個名字要和頁面配置的一致 ip: '' logpath: /datxxxxjob/joxxxler logretentiondays: 30 port: 9996
就是這個 port端口重復(fù)導(dǎo)致的問題修改一下即可
port: 9996
本來我是第二種情況已經(jīng)解決了，結(jié)果下午又報這個錯了，因此有了第三種情況的解決。
啟動報錯時的 錯誤關(guān)鍵日志：
2023-02-14 13:59:12.074 INFO 8364 --- [ main] o.s.a.r.c.CachingConnectionFactory : Created new connection: rabbitConnectionFactory#131ba005:0/SimpleConnection@5981f2c6 [delegate=amqp://root@127.0.0.1:5673/, localPort= 5415] Exception in thread "Thread-21" java.net.BindException: Address already in use: bind at sun.nio.ch.Net.bind0(Native Method) at sun.nio.ch.Net.bind(Net.java:433) at sun.nio.ch.Net.bind(Net.java:425) at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223) at io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:134) at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:551) at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1346) at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:503) at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:488) at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:985) at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:247) at io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:344) at
由于我已經(jīng)解決過一次，所以我對端口比較敏感（大家看完后面的分析就可以知道我為什么敏感），就在yaml文件種搜了一下所有的 port 一共有五處。
排除項目的port（項目的接口沖突會直接報錯，停止運行）
排除xxl-job （第二種情況沖突已經(jīng)解決）
剩下的是集成的 redis，elasticsearch，rabbitmq
redis和elasticsearch我都沒有開啟，問題就只在rabbitmq了。
rabbitmq我是本地起的docker，來連接測試的。
然后我有認(rèn)真看了一下日志，就是上面貼出來的第一行
[delegate=amqp://root@127.0.0.1:5673/, localPort= 5415]
也就是打印完這個日志后報的錯誤，localPort= 5415，于是我又在本地查看了一下這個5415端口使用情況
netstat -aon|findstr 5415
果然 兩個不同的線程在用!
C:\Uxxxs\1xx0>netstat -aon|findstr 5415 TCP 127.0.0.1:5415 127.0.0.1:5673 ESTABLISHED 8364 TCP 127.0.0.1:5673 127.0.0.1:5415 ESTABLISHED 4136
然后我打開任務(wù)管理器 詳細(xì)信息，找到4136是daocker
我重啟了一下電腦，，解決了
程序啟動之后重新啟動了一個線程去連接xxl-job的端口，但是這個端口已經(jīng)被占用了，所以程序就直接返回了一個這個線程被占用了。
服務(wù)創(chuàng)建監(jiān)聽的時候，如果端口有LISTENING、ESTABLISHED、TIME_WAIT等，好像都會報錯。 可以研究下原理
TCP狀態(tài)轉(zhuǎn)移要點
TCP協(xié)議規(guī)定，對于已經(jīng)建立的連接，網(wǎng)絡(luò)雙方要進(jìn)行四次握手才能成功斷開連接，如果缺少了其中某個步驟，將會使連接處于假死狀態(tài)，連接本身占用的資源不會被釋放。網(wǎng)絡(luò)服務(wù)器程序要同時管理大量連接，所以很有必要保證無用連接完全斷開，否則大量僵死的連接會浪費許多服務(wù)器資源。在眾多TCP狀態(tài)中，最值得注意的狀態(tài)有兩個：CLOSE_WAIT和TIME_WAIT。
1、LISTENING狀態(tài)
FTP服務(wù)啟動后首先處于偵聽（LISTENING）狀態(tài)。
2、ESTABLISHED狀態(tài)
ESTABLISHED的意思是建立連接。表示兩臺機(jī)器正在通信。
3、TIME_WAIT
我方主動調(diào)用close()斷開連接，收到對方確認(rèn)后狀態(tài)變?yōu)門IME_WAIT。TCP協(xié)議規(guī)定TIME_WAIT狀態(tài)會一直持續(xù)2MSL(即兩倍的分段最大生存期)，以此來確保舊的連接狀態(tài)不會對新連接產(chǎn)生影響。處于TIME_WAIT狀態(tài)的連接占用的資源不會被內(nèi)核釋放，所以作為服務(wù)器，在可能的情況下，盡量不要主動斷開連接，以減少TIME_WAIT狀態(tài)造成的資源浪費。
目前有一種避免TIME_WAIT資源浪費的方法，就是關(guān)閉socket的LINGER選項。但這種做法是TCP協(xié)議不推薦使用的，在某些情況下這個操作可能會帶來錯誤。
感謝各位的閱讀，以上就是“java啟動時報線程占用報錯Exception in thread “Thread-14“怎么解決”的內(nèi)容了，經(jīng)過本文的學(xué)習(xí)后，相信大家對java啟動時報線程占用報錯Exception in thread “Thread-14“怎么解決這一問題有了更深刻的體會，具體使用情況還需要大家實踐驗證。這里是億速云，小編將為大家推送更多相關(guān)知識點的文章，歡迎關(guān)注！
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