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有没有办法知道这个动作是否有价值?我的组件(自定义标签)上有两个按钮。如果我填写“actionRemove”参数,就会出现“删除”按钮。( rendered="#{not empty actionRemove}")
rendered="#{not empty actionRemove}"
Primefaces:5.0,Jsf:2.2,Omnifaces:2.0