RichFaces的元素类型“A4J：参数”必须遵循的任一属性规格

Question

我有我的commandlink 2个PARAMS，它工作得很好，直到我建立和清理我的项目，现在它给了我这个错误：

javax.faces.view.facelets.FaceletException: Error Parsing /adminTimeLogging/Create.xhtml: Error Traced[line: 134] Element type "a4j:param" must be followed by either attribute specifications, ">" or "/>". 
    at com.sun.faces.facelets.compiler.SAXCompiler.doCompile(SAXCompiler.java:444) 
    at com.sun.faces.facelets.compiler.SAXCompiler.doCompile(SAXCompiler.java:418) 
    at com.sun.faces.facelets.compiler.Compiler.compile(Compiler.java:124) 
    at com.sun.faces.facelets.impl.DefaultFaceletFactory.createFacelet(DefaultFaceletFactory.java:477) 
    at com.sun.faces.facelets.impl.DefaultFaceletFactory.access$100(DefaultFaceletFactory.java:106) 
    at com.sun.faces.facelets.impl.DefaultFaceletFactory$1.newInstance(DefaultFaceletFactory.java:203) 
    at com.sun.faces.facelets.impl.DefaultFaceletFactory$1.newInstance(DefaultFaceletFactory.java:201) 
    at com.sun.faces.facelets.impl.DefaultFaceletCache$1.newInstance(DefaultFaceletCache.java:86) 
    at com.sun.faces.facelets.impl.DefaultFaceletCache$1.newInstance(DefaultFaceletCache.java:81) 
    at com.sun.faces.util.ExpiringConcurrentCache$1.call(ExpiringConcurrentCache.java:99) 
    at java.util.concurrent.FutureTask.run(FutureTask.java:262) 
    at com.sun.faces.util.ExpiringConcurrentCache.get(ExpiringConcurrentCache.java:114) 
    at com.sun.faces.facelets.impl.DefaultFaceletCache.getFacelet(DefaultFaceletCache.java:124) 
    at com.sun.faces.facelets.impl.DefaultFaceletCache.getFacelet(DefaultFaceletCache.java:63) 
    at com.sun.faces.facelets.impl.DefaultFaceletFactory.getFacelet(DefaultFaceletFactory.java:299) 
    at com.sun.faces.facelets.impl.DefaultFaceletFactory.getFacelet(DefaultFaceletFactory.java:243) 
    at com.sun.faces.application.view.FaceletViewHandlingStrategy.buildView(FaceletViewHandlingStrategy.java:966) 
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:99) 
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) 
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647) 
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160) 
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734) 
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673) 
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174) 
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260) 
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188) 
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191) 
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168) 
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189) 
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114) 
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77) 
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838) 
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544) 
    at java.lang.Thread.run(Thread.java:744) 

这里是我的commandlink代码：

<a4j:commandButton action="#{timeLoggingDetailController.create}" value="#{bundle.CreateTimeLoggingDetailSaveLink}" styleClass="sqbutton"> 
        <a4j:param name="w" value="#{timeLoggingController.selected.id}" assignTo="#{timeLoggingDetailController.selected.timeLoggingId}"/> 
        <a4j:param name="h" value="#{TableManager.approvalLevelId("PEND")}" assignTo="#{timeLoggingDetailController.selected.approvalLevelsId}"/> 
       </a4j:commandButton> 

的PARAMS与/>关闭。

我怎样才能解决这个问题？

Answer 1

使用“字符串”，而不是“串”，所以只需更换：

<a4j:param name="h" value="#{TableManager.approvalLevelId("PEND")}" assignTo="#{timeLoggingDetailController.selected.approvalLevelsId}"/> 

与

<a4j:param name="h" value="#{TableManager.approvalLevelId('PEND')}" assignTo="#{timeLoggingDetailController.selected.approvalLevelsId}"/>