1，定義一個(gè)攔截器類繼承 AbstractInterceptor? 或者 MethodFilterInterceptor
2.在struts.xml里面定義如下
? <interceptors>
? ? <interceptor name="encodingInterceptor"class="sy.interceptor.EncodingInterceptor">
? ? <interceptor-stack name="encodingStack">
? ? <interceptor-ref name="defaultStack"></interceptor>
? <interceptor-ref name="encodingInterceptor"></interceptor>
? ? </interceptor-stack>
</interceptor>
</interceptors>
<default-interceptor-ref name="encodingStack"></default-interceptor-ref>
