Creo que no me reconoce el DTD, de ser asi en que parte del proyecto deberia ir el dtd.

<form-beans>
<form-bean name="sistemaForm" type="com.jony.example.form.SistemaForm"/>
</form-beans>

<global-forwards>
<forward name="success" path="/success.jsp"/>
<forward name="sistema" path="/sistema.jsp"/>
<forward name="sistemas" path="/sistemas.jsp"/>
<forward name="update" path="/update.jsp"/>
</global-forwards>

<action-mappings>
<action path="/doUpdate"
type="com.jony.example.action.SistemaAction"
name="sistemaForm"
scope="session"
validate="true"
parameter="method"
input="/update.jsp">
</action>

<action path="/doCreate"
type="com.jony.example.action.SistemaAction"
name="sistemaForm"
scope="session"
validate="true"
parameter="method"
input="/create.jsp">
</action>

<action path="/doDelete"
type="com.jony.example.action.SistemaAction"
name="sistemaForm"
scope="session"
validate="false"
parameter="method"/>

<action path="/doSearch"
type="com.jony.example.action.SistemaAction"
name="sistemaForm"
scope="session"
validate="false"
parameter="method"/>

<action path="/doSearchByOptions"
type="com.jony.example.action.SistemaAction"
name="sistemaForm"
scope="session"
validate="true"
parameter="method"
input="/searchByOptions.jsp"/>

</action-mappings>


Gracias

Responder