struts_interceptor

1.类

public class MyInterceptor implements Interceptor {

	public void destroy() {
	}

	public void init() {
	}

	public String intercept(ActionInvocation invocation) throws Exception {
		System.out.println("+++++2+++++");
		invocation.invoke();
		System.out.println("=====2=====");
		return "sss";
	}

}

2.配置struts.xml

引用

  <package name="default" namespace="/" extends="struts-default">
    <interceptors>
            <interceptor name="test" class="com.struts.MyInterceptor"/>
          </interceptors>
        <action name="*_*" class="com.struts.{1}Action" method="{2}">
            <result name="{2}">/{2}.jsp</result>
             <interceptor-ref name="test"/>
             <interceptor-ref name="defaultStack"/>
       </action>
    </package>

3.验证重复提交
  配置struts.xml
 
   

引用

<interceptor-ref name="defaultStack"/>
             <interceptor-ref name="token"></interceptor-ref>
             <interceptor-ref name="invalid.token"></interceptor-ref>

  配置jsp
 

引用

    <s:token></s:token>