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ff4j / ff4j-spring-boot-starter-parent

A spring boot starter for FF4J (Feature Flipping For Java)
Apache License 2.0
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Missing Default Constructor required for FF4JWebConsoleConfiguration #446

Closed hunnarlukkad2041 closed 4 months ago

hunnarlukkad2041 commented 5 months ago

Describe the bug I have a Java spring-boot application with a maven compiler for ff4j-web (version 1.8). On upgrading to ff4j version 2.0.0, I modified my project referring to doc: https://github.com/ff4j/ff4j-samples/tree/master/ff4j-spring-boot-samples/ff4j-spring-boot-starter-webmvc-sample, with spring boot version 3.2.4 and JDK 21.

Getting runtime exception while server startup: 

org.apache.catalina.core.StandardContext.startInternal Error during ServletContainerInitializer processing
    jakarta.servlet.ServletException: Failed to instantiate WebApplicationInitializer class
        at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:157)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4880)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:171)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:683)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:658)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:712)
        at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1796)
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
        at java.base/java.lang.reflect.Method.invoke(Method.java:580)
        at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:293)
        at java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:803)
        at java.management/com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:802)
        at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:422)
        at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:376)
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
        at java.base/java.lang.reflect.Method.invoke(Method.java:580)
        at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:293)
        at java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:803)
        at java.management/com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:802)
        at java.management/com.sun.jmx.remote.security.MBeanServerAccessController.invoke(MBeanServerAccessController.java:472)
        at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1472)
        at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1310)
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:714)
        at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1412)
        at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829)
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
        at java.base/java.lang.reflect.Method.invoke(Method.java:580)
        at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:360)
        at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200)
        at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197)
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:714)
        at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:598)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:844)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:721)
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:720)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
        at java.base/java.lang.Thread.run(Thread.java:1583)
    Caused by: java.lang.NoSuchMethodException: org.ff4j.spring.boot.autoconfigure.webmvc.FF4JWebConsoleConfiguration.<init>()
        at java.base/java.lang.Class.getConstructor0(Class.java:3761)
        at java.base/java.lang.Class.getDeclaredConstructor(Class.java:2930)
        at org.springframework.util.ReflectionUtils.accessibleConstructor(ReflectionUtils.java:185)
        at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:154)
        ... 39 more

Upon checking further, FF4JWebConsoleConfiguration does not seem to have a no-argument constructor which is causing this issue. Is there any additional configurations/dependencies to be added here other than what is mentioned in this doc: https://github.com/ff4j/ff4j-spring-boot-starter-parent/releases/tag/2.0.0 ??

paul58914080 commented 4 months ago

Hello @hunnarlukkad2041 ,

For JDK 21 you will require version 2.1.

Checkout ff4j-spring-boot-starter-webmvc-sample

I am closing this issue as this functions as designed.