【系统配置简述】
weblogic版本：weblogic12.2.1.3.0
Myfaces：2.3.2
SpringBoot: 1.5.13.RELEASE
Spring: 4.3.17.RELEASE
jdk: Java HotSpot(TM) 64-Bit Server VM 1.8.0_60
该war包在STS开发平台（内置Tomcat 8.5.31）下是能正常运行。
【异常】
weblogic部署应用war包时，部署失败，后台日志报异常，Caused by内容如下：
Caused By: java.lang.NoSuchMethodException: org.apache.myfaces.webapp.filter.TomahawkFacesContextFactory.<init>()
at java.lang.Class.getConstructor0(Class.java:3082)
at java.lang.Class.newInstance(Class.java:412)
at javax.faces.FactoryFinderInstance.getImplGivenPreviousImpl(FactoryFinderInstance.java:407)
at javax.faces.FactoryFinderInstance.getImplementationInstance(FactoryFinderInstance.java:272)
at javax.faces.FactoryFinderInstance.getFactory(FactoryFinderInstance.java:549)
at javax.faces.FactoryFinder.getFactory(FactoryFinder.java:283)
at com.sun.faces.config.processor.FactoryConfigProcessor.verifyFactoriesExist(FactoryConfigProcessor.java:328)
at com.sun.faces.config.processor.FactoryConfigProcessor.process(FactoryConfigProcessor.java:236)
at com.sun.faces.config.ConfigManager.initialize(ConfigManager.java:439)
at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:227)
at weblogic.servlet.internal.EventsManager$FireContextListenerAction.run(EventsManager.java:705)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:326)
at weblogic.security.service.SecurityManager.runAsForUserCode(SecurityManager.java:197)
at weblogic.servlet.provider.WlsSecurityProvider.runAsForUserCode(WlsSecurityProvider.java:203)
at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:71)
at weblogic.servlet.internal.EventsManager.executeContextListener(EventsManager.java:251)
at weblogic.servlet.internal.EventsManager.notifyContextCreatedEvent(EventsManager.java:204)
at weblogic.servlet.internal.EventsManager.notifyContextCreatedEvent(EventsManager.java:192)
at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:1921)
at weblogic.servlet.internal.WebAppServletContext.start(WebAppServletContext.java:3101)
at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:1843)
at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:884)
at weblogic.application.internal.ExtensibleModuleWrapper$StartStateChange.next(ExtensibleModuleWrapper.java:360)
at weblogic.application.internal.ExtensibleModuleWrapper$StartStateChange.next(ExtensibleModuleWrapper.java:356)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45)
at weblogic.application.internal.ExtensibleModuleWrapper.start(ExtensibleModuleWrapper.java:138)
at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:124)
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:233)
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:228)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45)
at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:78)
at weblogic.application.internal.flow.StartModulesFlow.activate(StartModulesFlow.java:52)
at weblogic.application.internal.BaseDeployment$2.next(BaseDeployment.java:752)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45)
at weblogic.application.internal.BaseDeployment.activate(BaseDeployment.java:262)
at weblogic.application.internal.SingleModuleDeployment.activate(SingleModuleDeployment.java:52)
at weblogic.application.internal.DeploymentStateChecker.activate(DeploymentStateChecker.java:165)
at weblogic.deploy.internal.targetserver.AppContainerInvoker.activate(AppContainerInvoker.java:90)
at weblogic.deploy.internal.targetserver.operations.AbstractOperation.activate(AbstractOperation.java:631)
at weblogic.deploy.internal.targetserver.operations.ActivateOperation.activateDeployment(ActivateOperation.java:171)
at weblogic.deploy.internal.targetserver.operations.ActivateOperation.doCommit(ActivateOperation.java:121)
at weblogic.deploy.internal.targetserver.operations.AbstractOperation.commit(AbstractOperation.java:348)
at weblogic.deploy.internal.targetserver.DeploymentManager.handleDeploymentCommit(DeploymentManager.java:907)
at weblogic.deploy.internal.targetserver.DeploymentManager.activateDeploymentList(DeploymentManager.java:1468)
at weblogic.deploy.internal.targetserver.DeploymentManager.handleCommit(DeploymentManager.java:459)
at weblogic.deploy.internal.targetserver.DeploymentServiceDispatcher.commit(DeploymentServiceDispatcher.java:181)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.doCommitCallback(DeploymentReceiverCallbackDeliverer.java:217)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.access$100(DeploymentReceiverCallbackDeliverer.java:14)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer$2.run(DeploymentReceiverCallbackDeliverer.java:69)
at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:670)
at weblogic.invocation.ComponentInvocationContextManager._runAs(ComponentInvocationContextManager.java:352)
at weblogic.invocation.ComponentInvocationContextManager.runAs(ComponentInvocationContextManager.java:337)
at weblogic.work.LivePartitionUtility.doRunWorkUnderContext(LivePartitionUtility.java:57)
at weblogic.work.PartitionUtility.runWorkUnderContext(PartitionUtility.java:41)
at weblogic.work.SelfTuningWorkManagerImpl.runWorkUnderContext(SelfTuningWorkManagerImpl.java:644)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:415)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:355)【分析】
TomahawkFacesContextFactory这个类从1.1.7版本开始，但一直都没有init方法，为什么会报找不到init方法呢？
根据异常栈，看了一下Class源码：
private Constructor<T> getConstructor0(Class<?>[] parameterTypes,
int which) throws NoSuchMethodException
{
Constructor<T>[] constructors = privateGetDeclaredConstructors((which == Member.PUBLIC));
for (Constructor<T> constructor : constructors) {
if (arrayContentsEq(parameterTypes,
constructor.getParameterTypes())) {
return getReflectionFactory().copyConstructor(constructor);
}
}
throw new NoSuchMethodException(getName() + ".<init>" + argumentTypesToString(parameterTypes));
}说明没有找到构造方法，为什么呢？stackoverflow类似的问题是这么解决的：
The message java.lang.NoSuchMethodException: userAuth.User.<init>() means that someone tried to call a constructor without any parameters. Adding a default constructor should solve this problem:
public class User {
public User() {
}
..
}但是，TomahawkFacesContextFactory是有定义构造方法的：
public TomahawkFacesContextFactory(FacesContextFactory delegate) {
this.delegate = delegate;
}感觉应该是版本问题，于是，换了一个思路，去核对相应的版本。
我发现，myfaces 2.3.2 是2018年8月29日发布，而我使用的weblogic 12c (12.2.1.3.0) 是2017年8月发布。
于是，查了MyFaces 官方文档，MyFaces 2.3需要JSF2.3，servlet 4.0支持。不过挺奇怪的是，本地Tomcat8.5.31对应的servlet是3.1，为什么没有问题呢？估计跟tomcat-embed-jasper的支持有关。
再查weblogic官方文档，发现weblogic12.2.1.3.0仅支持JSF2.2和servlet3.1。问题终于找到，看来是系统选用Myfaces版本太高导致。
那得找Myfaces哪一个版本呢？于是往下查找，找到2.2版本，再到Myface对应的Github上，找到2.2.X中最大的一个版本2.2.12。
【解决】
于是，把Myfaces版本调低至2.2.12，最终问题得到解决。
改起来相对比较简单，直接修改pom.xml文件即可。
<properties>
……
<myfaces.version>2.2.12</myfaces.version>
</properties>文章结束。