Tomcat: LifecycleException when deploying

Question

I just downloaded the Tomcat 7.0.23 package on my Ubuntu 11.10.

I followed the instructions on a Google API website to deploy their example webapp. It basically consists of jar files placed in the WEB-INF/lib directory and a web.xml file placed in the WEB-INF directory.

Yet the app is not automatically deployed and when trying to force the server to deploy it through the manager gui, I get the following message:

FAIL - Application at context path /myWebApp could not be started
FAIL - Encountered exception org.apache.catalina.LifecycleException: 
         Failed to start component 
         [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/myWebApp]]

However, the JSP examples provided with Tomcat do work!

I have the same problem on Tomcat6.

So what did I do wrong ? Is this a permission problem ? (I even try to change the mod of all files to 777).

Solution 1

This means something is wrong with your application configuration or startup.

There is always information about that in the logs - check logs/catalina.out and figure out what is wrong.

Solution 2

I had this problem, where it just would not deploy on Tomcat , then i removed all @webServlet Annotations from all my servlet code and it deployed successfully.

Solution 3

Remove the servlet-api.jar from build path and just add it on web-inf lib folder and then export the WAR file..it'll work...cheers..!!!

Solution 4

Check your WEB-INF/web.xml file for the servlet Mapping.

Solution 5

In eclipse ... go to Servers view ... right click on the tomcat server -> Add or remove programs -> Remove all other projects. Now try to run the project. It should work.

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Comments

[Jean Logeart]

Thanks for your answer! Reading the logs revealed that there was a servlet-mapping on a servlet that did not exist. I did not check the web.xml file given by Google and assumed it was correct, but for some reason it was not! Thanks again, it works once the mapping is commented.

[Bart van Heukelom]

I'm getting this exception, but nothing appears in catalina.out

[kon psych]

This is a special case but generally the problem is that a particular jar is missing from web-inf lib folder

[icedwater]

I have the same problem as @BartvanHeukelom. I don't know what to do.

[Krutik]

While opening logs/cataline.out, it is showing the following error: Error: Could not find or load main class org.apache.catalina.startup.Bootstrap

[personal_cloud]

Works for me too. Provided you also remove the init code described here: stackoverflow.com/questions/26089902 Except then there are no WebServlets. Plus1 anyway for being the most relevant answer.

[personal_cloud]

That is all fine and good for standalone Tomcat. What do we do when we encounter a similar-looking problem in embedded Tomcat?

[Jero Dungog]

Thanks for reminding that catalina.out exists hahaha solved my issue now. Thank you again!

[Paul Sender]

While this works, I rely on WebServlet annotations for routing. What's the work around?