https://bz.apache.org/bugzilla/show_bug.cgi?id=62090
Bug ID: 62090
Summary: NPE in o.a.t.util.modeler.Util when servlet-name does
not exist in web.xml
Product: Tomcat 9
Version: 9.0.4
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: -----
When using a web.xml that specifies a servlet element, but excludes
servlet-name a NPE is observed and the webapp fails to deploy. A check should
be added in the StandardWrapper and it should throw a ServletException when
servlet-name is missing.
To reproduce, add a serlvet tag to your web.xml with no servlet-name. For
example:
<servlet>
<servlet-class>com.example.servlets.HelloServlet</servlet-class>
</servlet>
Then start Tomcat and observe the exception in catalina.out:
SEVERE [main] org.apache.catalina.core.ContainerBase.addChildInternal
ContainerBase.addChild: start:
org.apache.catalina.LifecycleException: Failed to initialize component
[StandardEngine[Catalina].StandardHost[localhost].StandardContext[/test].StandardWrapper[null]]
at
org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:441)
....
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:353)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:493)
Caused by: java.lang.NullPointerException
at
org.apache.tomcat.util.modeler.Util.objectNameValueNeedsQuote(Util.java:26)
at
org.apache.catalina.core.StandardWrapper.getObjectNameKeyProperties(StandardWrapper.java:1619)
at
org.apache.catalina.util.LifecycleMBeanBase.initInternal(LifecycleMBeanBase.java:61)
at
org.apache.catalina.core.ContainerBase.initInternal(ContainerBase.java:885)
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136)
... 49 more
Setting xmlValidation="true" on the Context may handle this differently, but
it's off by default so we should check for null and handle that case.
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