Custom xml plugin

I am getting the below error.

java.lang.NoClassDefFoundError: org/sonarsource/analyzer/commons/xml/checks/SimpleXPathBasedCheck
	at java.base/java.lang.ClassLoader.defineClass1(Native Method)
	at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1016)
	at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:174)
	at java.base/java.net.URLClassLoader.defineClass(URLClassLoader.java:555)
	at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:458)
	at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:452)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:451)
	at org.sonar.classloader.ClassRealm.loadClassFromSelf(ClassRealm.java:125)
	at org.sonar.classloader.ParentFirstStrategy.loadClass(ParentFirstStrategy.java:37)
	at org.sonar.classloader.ClassRealm.loadClass(ClassRealm.java:87)
	at org.sonar.classloader.ClassRealm.loadClass(ClassRealm.java:76)
	at org.sonar.plugins.xml.checks.CheckList.getCheckClasses(CheckList.java:58)
	at org.sonar.plugins.xml.XmlCustomRulesDefinition.checkClasses(XmlCustomRulesDefinition.java:93)
	at org.sonar.plugins.xml.XmlCustomRulesDefinition.define(XmlCustomRulesDefinition.java:62)
	at org.sonar.server.rule.RuleDefinitionsLoader.load(RuleDefinitionsLoader.java:53)
	at org.sonar.server.rule.RegisterRules.start(RegisterRules.java:117)
	at org.sonar.core.platform.StartableCloseableSafeLifecyleStrategy.start(StartableCloseableSafeLifecyleStrategy.java:40)
	at org.picocontainer.injectors.AbstractInjectionFactory$LifecycleAdapter.start(AbstractInjectionFactory.java:84)
	at org.picocontainer.behaviors.AbstractBehavior.start(AbstractBehavior.java:169)
	at org.picocontainer.behaviors.Stored$RealComponentLifecycle.start(Stored.java:132)
	at org.picocontainer.behaviors.Stored.start(Stored.java:110)
	at org.picocontainer.DefaultPicoContainer.potentiallyStartAdapter(DefaultPicoContainer.java:1016)
	at org.picocontainer.DefaultPicoContainer.startAdapters(DefaultPicoContainer.java:1009)
	at org.picocontainer.DefaultPicoContainer.start(DefaultPicoContainer.java:767)
	at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:136)
	at org.sonar.server.platform.platformlevel.PlatformLevel.start(PlatformLevel.java:90)
	at org.sonar.server.platform.platformlevel.PlatformLevelStartup.access$001(PlatformLevelStartup.java:49)
	at org.sonar.server.platform.platformlevel.PlatformLevelStartup$1.doPrivileged(PlatformLevelStartup.java:87)
	at org.sonar.server.user.DoPrivileged.execute(DoPrivileged.java:45)
	at org.sonar.server.platform.platformlevel.PlatformLevelStartup.start(PlatformLevelStartup.java:84)
	at org.sonar.server.platform.PlatformImpl.executeStartupTasks(PlatformImpl.java:198)
	at org.sonar.server.platform.PlatformImpl.access$400(PlatformImpl.java:46)
	at org.sonar.server.platform.PlatformImpl$1.lambda$doRun$1(PlatformImpl.java:122)
	at org.sonar.server.platform.PlatformImpl$AutoStarterRunnable.runIfNotAborted(PlatformImpl.java:370)
	at org.sonar.server.platform.PlatformImpl$1.doRun(PlatformImpl.java:122)
	at org.sonar.server.platform.PlatformImpl$AutoStarterRunnable.run(PlatformImpl.java:354)
	at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.ClassNotFoundException: org.sonarsource.analyzer.commons.xml.checks.SimpleXPathBasedCheck
	at org.sonar.classloader.ParentFirstStrategy.loadClass(ParentFirstStrategy.java:39)
	at org.sonar.classloader.ClassRealm.loadClass(ClassRealm.java:87)
	at org.sonar.classloader.ClassRealm.loadClass(ClassRealm.java:76)
	... 38 common frames omitted

Hi,

Welcome to the community!

I guess you’re writing your own plugin? For what language? Based on the stacktrace, I’m guessing XML? If so, you need to know that there’s no support for custom rules for XML written in Java.

 
Ann