I'm trying to follow this tutorial on creating a simple REST web service, however I get to deploying it on tomcat and it throws an exception:
FAIL - Application at context path /restful could not be started
FAIL - Encountered exception org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/restful]]
I've looked around for a solution and found this question and this one and they make me think that it's a servlet-mapping problem however I'm not sure how to fix it!
Here is my log file:
18/12/2012 9:57:16 AM org.apache.catalina.startup.HostConfig deployWAR
SEVERE: Error deploying web application archive /opt/tomcat7/webapps/restful.war
java.lang.IllegalStateException: ContainerBase.addChild: start:
org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/restful]]
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:904)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:977)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1655)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
here is my web.xml file:
<?xml version="1.0" encoding="UTF-8"?>
<web-app
xmlns="http://java.sun.com/xml/ns/javaee" version="3.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<servlet>
<servlet-name>RestfulContainer</servlet-name>
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>com.sun.jersey.config.property.packages</param-name>
<param-value>com.mcnz.ws</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>RestfulContainer</servlet-name>
<url-pattern>/resources/*</url-pattern>
</servlet-mapping>
</web-app>
and at the risk of giving you all far too much information, here is a ls of my folder structure:
.:
WEB-INF
./WEB-INF:
classes
lib
web.xml
./WEB-INF/classes:
com
./WEB-INF/classes/com:
mcnz
./WEB-INF/classes/com/mcnz:
ws
./WEB-INF/classes/com/mcnz/ws:
HelloWorldResource.class
HelloWorldResource.java
./WEB-INF/lib:
asm-3.1.jar
jackson-core-asl-1.9.2.jar
jackson-jaxrs-1.9.2.jar
jackson-mapper-asl-1.9.2.jar
jackson-xc-1.9.2.jar
jersey-client-1.16.jar
jersey-core-1.16.jar
jersey-json-1.16.jar
jersey-server-1.16.jar
jettison-1.1.jar
jsr311-api-1.1.1.jar
As the above comment shows, the problem turned out to be that the application web.xml referenced a java class in a servlet definition. The problem was corrected by making sure the application actually contained that class. The missing jar file was located and put in the WEB-INF/lib directory.