大家好,这是最近几天写的关于JSF项目是遇到的问题与解答
一:JSF中, <h:dataTable>中 <h:commandLink/>点击失效的问题!
源码如下:
上面的代码中,用了h:commandButton 和 h:commandLink ,点击h:commandButton可以正确提交,而h:commandLink却没有任何作用,只是刷新本页面!
答案:
将user这个bean的作用域改为session
二:
<managed-bean-scope>session</managed-bean-scope>和<value>#{requestScope.userName}</value>要一致,或者小于的关系,想下面这样
否则会出现这个异常:javax.servlet.ServletException: The scope of the referenced object: #{requestScope.sex} is shorter than the referring object
一:JSF中, <h:dataTable>中 <h:commandLink/>点击失效的问题!
源码如下:
<h:dataTable border="1" value="#{views.viewList}" var="res">
<h:column id="column1">
<f:facet name="header">
<h:outputText value="用户姓名"> </h:outputText>
</f:facet>
<h:commandButton value="提交" action="#{user.regist}"> </h:commandButton>
<h:commandLink action="#{user.regist}">
<f:param name="userID" value="#{user.userID}"></f:param>
</h:commandLink>
</h:column>
</h:dataTable>
上面的代码中,用了h:commandButton 和 h:commandLink ,点击h:commandButton可以正确提交,而h:commandLink却没有任何作用,只是刷新本页面!
答案:
将user这个bean的作用域改为session
二:
<managed-bean-scope>session</managed-bean-scope>和<value>#{requestScope.userName}</value>要一致,或者小于的关系,想下面这样
<managed-bean>
<managed-bean-name>userInfo</managed-bean-name>
<managed-bean-class>com.jsf.bean.UserInfo</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
<!-- 将userName设置到request范围中
<managed-property>
<property-name>userName</property-name>
<value>#{requestScope.userName}</value>
</managed-property>
-->
</managed-bean>
否则会出现这个异常:javax.servlet.ServletException: The scope of the referenced object: #{requestScope.sex} is shorter than the referring object