部署错误：Tomcat 启动失败，服务器端口 8080 已在使用中

java netbeans deployment tomcat

2022-09-01 04:43:38

当我使用 Netbeans 运行 Java 项目时，我收到以下错误：

Deployment error:
Starting of Tomcat failed, the server port 8080 is already in use.
See the server log for details.
        at org.netbeans.modules.j2ee.deployment.devmodules.api.Deployment.deploy(Deployment.java:166)
        at org.netbeans.modules.j2ee.ant.Deploy.execute(Deploy.java:104)
        at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
        at sun.reflect.GeneratedMethodAccessor619.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
        at org.apache.tools.ant.Task.perform(Task.java:348)
        at org.apache.tools.ant.Target.execute(Target.java:357)
        at org.apache.tools.ant.Target.performTasks(Target.java:385)
        at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
        at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
        at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
        at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
        at org.apache.tools.ant.module.bridge.impl.BridgeImpl.run(BridgeImpl.java:277)
        at org.apache.tools.ant.module.run.TargetExecutor.run(TargetExecutor.java:460)
        at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:151)
Caused by: org.netbeans.modules.j2ee.deployment.impl.ServerException: Starting of Tomcat failed, the server port 8080 is already in use.
        at org.netbeans.modules.j2ee.deployment.impl.ServerInstance._start(ServerInstance.java:1297)
        at org.netbeans.modules.j2ee.deployment.impl.ServerInstance.startTarget(ServerInstance.java:1251)
        at org.netbeans.modules.j2ee.deployment.impl.ServerInstance.startTarget(ServerInstance.java:1062)
        at org.netbeans.modules.j2ee.deployment.impl.ServerInstance.start(ServerInstance.java:939)
        at org.netbeans.modules.j2ee.deployment.impl.TargetServer.startTargets(TargetServer.java:428)
        at org.netbeans.modules.j2ee.deployment.devmodules.api.Deployment.deploy(Deployment.java:143)
        ... 16 more
BUILD FAILED (total time: 4 seconds)

我尝试将服务器端口更改为8081并关闭工具>服务器中的端口。它运行良好，但如果我执行任何操作并运行项目，它会再次显示“部署错误：Tomcat启动失败，服务器端口8081已在使用中"

问题出在哪里？

答案 1

转到命令提示符

netstat -aon

for linux

netstat -tulpn | grep 'your_port_number'

它会告诉你类似的东西

 TCP    192.1.200.48:2053      24.43.246.60:443       ESTABLISHED     248
 TCP    192.1.200.48:2055      24.43.246.60:443       ESTABLISHED     248
 TCP    192.1.200.48:2126      213.146.189.201:12350  ESTABLISHED     1308
 TCP    192.1.200.48:3918      192.1.200.2:8073       ESTABLISHED     1504
 TCP    192.1.200.48:3975      192.1.200.11:49892     TIME_WAIT       0
 TCP    192.1.200.48:3976      192.1.200.11:49892     TIME_WAIT       0
 TCP    192.1.200.48:4039      209.85.153.100:80      ESTABLISHED     248
 TCP    192.1.200.48:8080      209.85.153.100:80      ESTABLISHED     248

检查哪个进程绑定了您的端口。在上面的例子中，如果你确定你需要杀死那个进程火灾，它现在248

Linux：

kill -9 248

窗户：

taskkill /f /pid 248

它将杀死该过程

答案 2

如果您在代理服务器后面，则可能会发生此问题，我有同样的问题，并通过以下方式解决：首选项 - >常规 - >代理设置 ->无代理。

“也许tomcat就绪消息被发送到代理 - 但从未到达IDE。

已找到 @： https://netbeans.org/bugzilla/show_bug.cgi?id=231220