Deployment error:Starting of Tomcat failed, the server port 8080 is already in use

问题:

When i run my java project using netbeans i get the following error:

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) 

I tried changing the server port to 8081 and shutdown port in tool->server, It runs fine but again if i do any operations and run the project it says "Deployment error:Starting of Tomcat failed, the server port 8081 is already in use" What would be the problem can any one help me.

回答1:

goto command prompt

netstat -aon 

for linux

netstat -tulpn | grep 'your_port_number' 

it will show you something like

 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 

check which process has binded your port. here in above example its 248 now if you are sure that you need to kill that process fire

Linux:

kill -9 248 

Windows:

taskkill /f /pid 248 

it will kill that process

回答2:

If you are behind a proxy server this issue could happen i had the same issue and was solved by: Preferences -> General -> Proxy Settings -> No Proxy.

"Maybe the tomcat ready-message was sent to the proxy - and never reached the IDE."

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

回答3:

I had the same problem when trying to deploy, tomcat failed to restart as Tomcat instance was running. Close the IDE and check TASk Manager - kill any javaw process running, that solved the problem for me.

回答4:

Take a look on your running processes, it seems like your current Tomcat instance did not stop. It's still running and NetBeans tries to start a second Tomcat-instance. Thats the reason for your exception, you just have to stop the first instance, or deploy you code on the current running one

回答5:

By changing proxy settings to "no proxy" in netbeans the tomcat prbolem got solved.Try this it's seriously working.

回答6:

If on Linux you can kill existing Tomcats with this script

#/bin/bash if [ `whoami` != root ]; then     echo "Please run this script as root or using sudo"     exit fi echo echo "finding proceses that have name java and established connections status" echo echo "Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name" netstat --tcp  --programs  | grep "ESTABLISHED" | grep "java" echo echo "finding proceses that use port 8080 or http-alt" echo netstat --tcp --programs | grep ':8080\|:http-alt' echo -n "Do you wish to kill a process listed above?[Y/n]" read choose if [ "$choose" = "Y" ] || [ "$choose" = "y" ] || [ -z "$choose" ] then echo "enter pid to kill" read procesId kill -9 $procesId fi echo "done exiting" exit 0 

回答7:

Kill the previous instance of tomcat or the process that's running on 8080.

Go to terminal and do this:

lsof -i :8080

The output will be something like:

COMMAND   PID   USER      FD   TYPE  DEVICE SIZE/OFF NODE NAME java    76746   YourName  57u  IPv6 0xd2a83c9c1e75      0t0    TCP *:http-alt (LISTEN) 

Kill this process using it's PID:

kill 76746

回答8:

Select the project -> Right-Click -> clean and build and then run the project again simply solve the problem for me.

As, multiple process could bind the same port for example port 8086, In that case I have to kill all the processes involved with the port with PID. That might be cumbersome.

回答9:

I had a similar issue, except it was port 80 that was already in use. It turned out to be Microsofts IIS services. I dont use them at all so just uninstalled them through appwiz.cpl.

回答10:

In my case I accidentally added two instances of server and got this error.. Just take a look in Services tab under Servers and remove one of the instance... and restart the server... :)

回答11:

Change your default port in [tomcat_home_dir]/conf/server.xml find

change it to

回答12:

Change your Tomcat port address to 8084 and Shut Down Port to 8025. This will resolve your problem.

In other cases antivirus programs may cause problems. I had this problem with K7 total security. In my case K7 Firewall was blocking the 8084 port. The simple solution is to add an exception to Netbeans in K7 Firewall list.

In order to do that, open K7 and goto Settings -> Firewall Settings -> select Applications tab and find Netbeans.

Select Netbeans and click on edit link. On next screen select Grant Full Network access radio button.

Now goto Netbeans and start the server.

回答13:

I have fixed this, in Windows 8.1 x64.

1. goto - %userprofile%\AppData\Roaming\NetBeans\8.1\apache-tomcat-8.0.27.0_base\work\Catalina\localhost
2. Delete all folder without (manager and ROOT) folders
3. goto - %userprofile%\AppData\Roaming\NetBeans\8.1\apache-tomcat-8.0.27.0_base\conf\Catalina\localhost
4. delete all files without (manager.xml and ROOT.xml)
5. goto NetBeans and Start Tomcat server

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