使用jsf时的错误：Error testing property 'name' in bean of type null。请大家帮帮忙

Question

你的问题很严重，出现错误是因为你的bean设置有问题，解决如下：
建立三个新的managebean:
studentDAO,student,allStudents
修改manage的studentOp的属性，不能用空值,修改后大致如下：
<managed-bean>
<managed-bean-name>studentOp</managed-bean-name>
<managed-bean-class>com.jsf.bean.StudentOp</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
<managed-property>
<property-name>allStudents</property-name>
<property-class>javax.faces.model.DataModel</property-class>
<null-value>#{allStudents}</null-value>
</managed-property>
<managed-property>
<property-name>student</property-name>
<property-class>
com.jsf.hibernate.DAO.Student
</property-class>
<null-value>#{student}</null-value>
</managed-property>
<managed-property>
<property-name>studentDAO</property-name>
<property-class>
com.jsf.hibernate.DAO.StudentDAOBase
</property-class>
<null-value>#{studentDAO}</null-value>
</managed-property>
</managed-bean>ok了，祝你好运

Answer 1

谢谢！可是<null-value></null-value>之间不允许有内容啊

Answer 2

问题解决了！我把faces-config.xml中的属性全部去掉就可以了。

Answer 3

不好意思呀，刚才笔误写错了，应该是
<managed-property>
<property-name>allStudents</property-name>
<property-class>javax.faces.model.DataModel</property-class>
<value>#{allStudents}</value>
</managed-property>