Presence of <servlet-name> and <url-pattern> is not validated for <servlet-mapping> inside the web.xml ------------------------------------------------------------------------------------------------------- Key: WFLY-3714 URL: https://issues.jboss.org/browse/WFLY-3714 Project: WildFly Issue Type: Bug Security Level: Public(Everyone can see) Components: Web (Undertow) Affects Versions: 9.0.0.Beta1 Reporter: Jay Kumar SenSharma Assignee: Stuart Douglas - WildFly do not validate if the <servlet-mapping> tag has valid mappings or not. This should have been handled properly. *Example:* If following kind of web.xml based application is deployed on WildFly9 then {code} <?xml version="1.0"?> <web-app xmlns="http://java.sun.com/xml/ns/javaee" 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" version="3.0"> <servlet> <servlet-name>MyServlet</servlet-name> <servlet-class>servlets.MyServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>MyServlet</servlet-name> <!--url-pattern></url-pattern--> <!-- NOTICE url-pattern-tag is missing here --> </servlet-mapping> </web-app> {code} - With the above kind of web.xml a NullPointerException is encountered during deployment. {code} 15:50:20,207 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-7) MSC000001: Failed to start service jboss.undertow.deployment.default-server.default-host./ContextParamNullDemo.UndertowDeploymentInfoService: org.jboss.msc.service.StartException in service jboss.undertow.deployment.default-server.default-host./ContextParamNullDemo.UndertowDeploymentInfoService: Failed to start service at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1904) [jboss-msc-1.2.2.Final.jar:1.2.2.Final] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_51] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_51] at java.lang.Thread.run(Thread.java:744) [rt.jar:1.7.0_51] Caused by: java.lang.NullPointerException at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService.handleServletMappings(UndertowDeploymentInfoService.java:910) at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService.createServletConfig(UndertowDeploymentInfoService.java:656) at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService.start(UndertowDeploymentInfoService.java:252) at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1948) [jboss-msc-1.2.2.Final.jar:1.2.2.Final] at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1881) [jboss-msc-1.2.2.Final.jar:1.2.2.Final] ... 3 more 15:50:20,348 ERROR [org.jboss.as.controller.management-operation] (DeploymentScanner-threads - 1) WFLYCTL0013: Operation ("deploy") failed - address: ([("deployment" => "ContextParamNullDemo.war")]) - failure description: {"WFLYCTL0080: Failed services" => {"jboss.undertow.deployment.default-server.default-host./ContextParamNullDemo.UndertowDeploymentInfoService" => "org.jboss.msc.service.StartException in service jboss.undertow.deployment.default-server.default-host./ContextParamNullDemo.UndertowDeploymentInfoService: Failed to start service Caused by: java.lang.NullPointerException"}} {code}