Tapestry入门

<set-property name="clientScriptingEnabled" expression="true"/>
 </bean>

 <property-specification name="username" type="java.lang.String"/>
 <property-specification name="password" type="java.lang.String"/>

 <component id="inputUsername" type="ValidField"> ③
 <message-binding name="displayName" key="username"/> ④
 <binding name="validator" expression="beans.requiredValidator"/> ⑤
 <binding name="value" expression="username"/> ⑥
 </component>

 <component id="inputPassword" type="ValidField"> ⑦
 <message-binding name="displayName" key="password"/>
 <binding name="validator" expression="beans.requiredValidator"/>
 <binding name="value" expression="password"/>
 </component>

 </page-specification>