<h1>HTTP Status 500 - java.lang.IllegalStateException: No such extension com.alibaba.dubbo.validation.Validation by

        name ture</h1>

    <div class="line"></div>

    <p><b>type</b> Exception report</p>

    <p><b>message</b> <u>java.lang.IllegalStateException: No such extension com.alibaba.dubbo.validation.Validation by

            name ture</u></p>

    <p><b>description</b> <u>The server encountered an internal error that prevented it from fulfilling this

            request.</u></p>

    <p><b>exception</b></p>

    <pre>org.jboss.resteasy.spi.UnhandledException: java.lang.IllegalStateException: No such extension com.alibaba.dubbo.validation.Validation by name ture

    org.jboss.resteasy.core.ExceptionHandler.handleApplicationException(ExceptionHandler.java:76)

    org.jboss.resteasy.core.ExceptionHandler.handleException(ExceptionHandler.java:212)

    org.jboss.resteasy.core.SynchronousDispatcher.writeException(SynchronousDispatcher.java:149)

    org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:372)

    org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:179)

    org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:220)

    org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)

    org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51)

    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

    com.alibaba.dubbo.rpc.protocol.rest.DubboHttpServer$RestHandler.handle(DubboHttpServer.java:89)

    com.alibaba.dubbo.remoting.http.servlet.DispatcherServlet.service(DispatcherServlet.java:61)

    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

</pre>

    <p><b>root cause</b></p>

    <pre>java.lang.IllegalStateException: No such extension com.alibaba.dubbo.validation.Validation by name ture

    com.alibaba.dubbo.common.extension.ExtensionLoader.findException(ExtensionLoader.java:482)

    com.alibaba.dubbo.common.extension.ExtensionLoader.createExtension(ExtensionLoader.java:489)

    com.alibaba.dubbo.common.extension.ExtensionLoader.getExtension(ExtensionLoader.java:309)

    com.alibaba.dubbo.validation.Validation$Adaptive.getValidator(Validation$Adaptive.java)

    com.alibaba.dubbo.validation.filter.ValidationFilter.invoke(ValidationFilter.java:48)

    com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)

    com.alibaba.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:62)

    com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)

    com.alibaba.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:75)

    com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)

    com.alibaba.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:42)

    com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)

    com.alibaba.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:78)

    com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)

    com.alibaba.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:73)

    com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)

    com.alibaba.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:138)

    com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)

    com.alibaba.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:38)

    com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)

    com.alibaba.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:38)

    com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)

    com.alibaba.dubbo.rpc.proxy.InvokerInvocationHandler.invoke(InvokerInvocationHandler.java:52)

    com.alibaba.dubbo.common.bytecode.proxy1.pushOrder(proxy1.java)

    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

    java.lang.reflect.Method.invoke(Method.java:498)

    org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:137)

    org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:288)

    org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:242)

    org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:229)

    org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:356)

    org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:179)

    org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:220)

    org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)

    org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51)

    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

    com.alibaba.dubbo.rpc.protocol.rest.DubboHttpServer$RestHandler.handle(DubboHttpServer.java:89)

    com.alibaba.dubbo.remoting.http.servlet.DispatcherServlet.service(DispatcherServlet.java:61)

    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

</pre>

    <p><b>note</b> <u>The full stack trace of the root cause is available in the Apache Tomcat/8.0.32 logs.</u></p>

    <hr class="line">

    <h3>Apache Tomcat/8.0.32</h3>

</body>