I'm running a static web application in Eclipse + Tomcat and every time I run the application (Eclipse) and launched the project, I always encountered this problem 'Launching HTTP Preview at localhost' has encountered a problem:
I have changed the port number numerous time. I am afraid that this action might harm the server itself. Can anyone tell me what's going on and how do I prevent this from keep happening?
It looks like 8080 port is already being used by some other process/application
You can change the port using below steps (In Eclipse)
In Servers Tab, Double click the Tomcat server to open the
overview info
Under Ports section, HTTP/1.1 you can change the port you want and save it
Start the tomcat server, it should work
Thank you
I am using worklight 6.1.0.1 on Eclipse Kepler. As per the screen shot below, it hangs when I open the eclipse, with message saying "Worklight application builder". It takes forever to complete.
How do I resolve this issue ?
try to start eclipse with the -clean option on command line
The issue could be network related. If using a proxy server in eclipse make sure that is not enabled. This will try to route traffic through your proxy server. The other issue could be a firewall issue either locally or elsewhere. The application deployer routes out through the network to your workstation and does not use localhost. I have yet to find a way to change this setting.
I'm running on Win 7 using Eclipse 4.2 starting a web app on a Tomcat 7 server and using Derby database. I have tried many approaches but run consistently into a common problem:
Everything works just fine the first time I start up and run.
When I redeploy my application after a change, all database connections hang (any kind of restart).
If I stop Eclipse and restart Eclipse, that clears up the problem and the next run works fine again.
Having done some investigation, it appears that the problem is that the Derby port (1527) is not released from one execution of the server to the next. That seems very strange to me since Derby is started by the Tomcat instance which is a separate javaw process.
I've tried:
Configuring the Derby connection as a Tomcat resource
Establishing the connection within my code (rather than via Tomcat resource)
Both the embedded and the network driver
Starting / stopping the network driver from a servlet on startup and shutdown of the Tomcat server
Shutting down the embedded driver via servlet on shutdown of Tomcat
Again, every approach works fine to connect the first time.
One other symptom that doesn't appear to be related (except for as a possible indicator of whether or not shutdown completes correctly) is that the db.lck file for my database never gets deleted. However, whether or not it exists has no bearing on whether or not I can reconnect (only stopping/starting eclipse has an impact).
Any insight would be appreciated.
Thanks!
After some further investigation I'm going to call this a duplicate of: Cannot create JDBC driver of class ' ' for connect URL 'null' : I do not understand this exception. It's not quite the same thing, but that solution (creating META-INF/context.xml) allows it to proceed to failing calls rather than hangs, which is a significant improvement and suggests it's largely related.
I did finally figure this out. It turns out I had the derby jars in the Tomcat lib folder (for Tomcat) and in the deployment assembly for my application in Eclipse (rather than just in the build path). So Tomcat was using the built-in libs, while my app was using the embedded libs, and this resulted in conflicts. Leaving the libs as part of Tomcat and removing them from my war file solved the problem completely.
I am having trouble configuring my Tomcat on Eclipse. I followed the steps to set up a local Apache Tomcat Server on my Mac, and I also set up an SSL on the Tomcat Server successfully. However, after following instructions in setting up my Apache Tomcat server in eclipse, I keep getting errors saying the following:
HTTP Status 404 - /
type Status report
message /
description The requested resource is not available.
If it makes any difference, I removed the web project I was trying to make when creating my server. It also doesn't work when I try to boot it up on Terminal--I end up with the same message. Any help would be appreciated trying to decipher this error message! Thanks!
The "ROOT" folder of your tomcat seems to be empty. Either you did not add an application to your Tomact config ("Server" view) or you have to check your "Server location" settings, double click on your servers name in the same view.
Staring JBoss server from within Eclipse Ganymede gives me the following problem:
"Server JBoss v4.0 at localhost was unable to start within 120 seconds. If the server requires more time, try increasing the timeout in the server editor."
The console shows JBoss has started in so and so minutes but soon after, there is a pop up if the above message.
I can also start the JBoss externally.
I had a similar problem, but it was with a Tomcat 5.5 server.
The startup time was quite important, so I got this error.
To solve this problem, I did that steps:
In Preferences, Server, I changed the property "Server timeout delay" to "Unlimited".
Edit:
For Eclipse Ganymede, you must do that:
In the server view, double-click on your server JBoss.
In the overview, you have a "Timeouts" panel (by default, it is collapsed).
You can define the timeouts for server start and stop operations.
I had a similar problem. It turned out that Eclipse’s server default port was set to 8080 while my JBoss was working from 8180.
By changing the server’s configuration in Eclipse (double-click on the server and edit server property), it worked.
Increasing the timeout doesn't solve the problem. Eclipse never recognizes that the server has started (not sure if that's a big deal), just irritated me. I had this problem for weeks and finally figured out that (at least for me) the host name and address had to be identical. I had hostname:localhost; address"127.0.0.1" and it would not work. I changed both to 127.0.0.1 and voila!
Like this:
In my Eclipse with Jboss Tools, that ocurred too, I change the "Host name", on General information of JbossServer, from my machine name to 127.0.0.1.
Thanks, this works fine!
I've seen this behavior when I've changed JBoss to run via SSL on port 8443 instead of unencrypted on port 8080. It is my theory that the Eclipse plugin is checking on port 8080 to confirm that JBoss has started, and that this check is hardcoded and does not respect changes you make to the configuration to specify that the server runs on a different port.
Our workaround is to start JBoss from the debug pulldown menu, which apparently disables the timeout.
Try the following:-
Check if the port jboss configured correctly in the general information. It is usually 8080 unless you've changed it.
I use the hostname as 0.0.0.0 so that it can be accessed from other computers on the network.
I had a problem where I was connected to a vpn and it was causing this issue. Shut off any vpn connections.
You have to change ports defined in JBoss configuration panel. I have used -Djboss.service.binding.set=ports-01 to upgrade port numbers - and forgot to change Eclipse/JBoss configuration - and Eclipse failed to notice JBoss is already running.
Yes I had similar problem Jboss could not start from Eclipse Galileo within default 50 secs
so just changed server startup time by double clicking Jboss server icon in Server window near console & error log (NOT at windows->preferences->server). It opens server editor and then increased the start up time to 300
It worked then. !!!
I had the same issue and corrected it by modifying a "server.xml" file in the jboss folders.
I modified '<Connector port="8080"' by '<Connector port="server port defined in Eclipse"'
You may check whether you are running Jboss version 4.0.4 or version 4.2.2. You might get this error when you have installed Jboss 4.2.2 but configured Jboss 4.0.4 in Eclipse.
Are yoy runing on Linux?
If so, check if jBoss has write privileges over /tmp ...
I had the same problem, and I fixed creating a temp directory with RW privileges to User, Group and others, and adding this line to eclipse.ini
-Djava.io.tmpdir=yourTempDirectory
where your temp directory is the absolute addres of the Temp directory that you created.
I've come upon the same problem and found the explanation. For Eclipse, JBoss is expected to support the jboss-web service (tomcat.sar) which implies an HTTP port to be opened at the end of the process. In my case, as this service is disabled, no HTTP port is opened when the server is running...
Solution: simply double click on the jboss server in the Servers panel and copy the JNDI port to the Port field, in Server Properties section. This makes it.
This way, it is no more necessary to change host name to 127.0.0.1, you may let it be what you want (e.g. localhost is the default).
Double click on the jBoss server icon in the server view. A window pops up with “Timeout” collapsed. Click on the arrow and increase the start time.
I am new to EJB - Jboss. I too was getting the same problem
Jboss Is not started in given time, increase Start-up time out]]
It is not solved by your given valuable suggestions.
According to console: My Jboss-5.1.0.GA Server started in 50:21, 49:91 ...so on.
But not responded well with given host name: 10.168.2.11
Server Configuration Server: 10.168.2.11 which I like to execute when using ant.
Solution: All though It is worked well with
host Name: localhost
Server Name:localhost
Even increased port i.e. ports-02: result in http: port 8280
Attempted every practice given here. This is mine. Hope that eclipse community with jboss collaboration give right solution.
I don't know but bit Ground point in this Suggestion: https://stackoverflow.com/a/945444/1164686
Right click on "JBoss 4.2 at localhost" at "servers" window and select open, after that,
just change the port number from 8080 to 8081 and you are good to go.
I could fix it by using Aboucabar Toure's advice: under Eclipse Indigo, I opened JBoss server properties and edited the Server Ports group to match my JBoss ports configuration (unchecking Detect from Local Runtime boxes).
Then everything worked just fine!
If you are using a non default port for, instance 8180. You should configure eclipse to poll server at desired port number. See this picture:
This also happened when you create the jboss with different server version. I was using JBoss AS 7.2.0 final but had no idea to use which server version in eclipse. I tried with WildFly but that leads to this error. With all the good tips in here didn't solve my problem. Thanks to this post i corrected that with correct version. I should have used Jboss Enterprise Application platform 6.1.
Remove all eclipse breakpoint in the debug view, and the jboss will quickly start.
I am also facing same issue, after change the port number it has worked for me.
Port number in server.xml and jboss port number should be same.
goto -> jboss-4.0.3\server\default\deploy\jbossweb-tomcat55.sar\server.xml
Connector port="9090"
goto -> Double click on server and change your port number as what you gave in server.xml