NullPointerException at org.springframework.faces.webflow.FlowViewStateManager.saveView
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SEVERE: Error Rendering View[/login.xhtml]java.lang.NullPointerException at org.springframework.faces.webflow.FlowViewStateManager.saveView(FlowViewStateManager.java:181) at com.sun.faces.application.view.WriteBehindStateWriter.flushToWriter(WriteBehindStateWriter.java:225) at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:418) at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131) at org.springframework.faces.webflow.FlowViewHandler.renderView(FlowViewHandler.java:99) at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:288) at org.springframework.faces.webflow.FlowViewHandler.renderView(FlowViewHandler.java:99) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304) ....
出现这个异常的原因是用了spring-faces 2.3.0的包,
这个异常在2.3.1已经得到修复, 到目前为止最新的版本是2.3.2.RELEASE
已经测试过,最新版的jar没有问题
JSF 异常:could not find Factory: javax.faces.context.FacesContextFactory
解决办法:
在web.xml中添加监听:
<listener>
- NullPointerException at org.springframework.faces.webflow.FlowViewStateManager.saveView
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- at org.springframework.asm.ClassReader.<init>(Unknown Source)
- at org.springframework.asm.ClassReader.<init>(Unknown Source)
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