struts1的拦截器，一个简单的示范

1·首先写一个类 MyInterceptor 继承ActionServlet,代码如下

public class MyInterceptor extends ActionServlet {

    @Override
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws IOException, ServletException {
        // TODO Auto-generated method stub
        System.out.println("dopost");//这里可以写成自己的拦截代码。。大家就随意发挥吧
        super.doPost(request, response);
    }
    @Override
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws IOException, ServletException {
        // TODO Auto-generated method stub
        System.out.println("doget");//这里可以写成自己的拦截代码。。大家就随意发挥吧
        super.doGet(request, response);
    }
}

2·然后把WEB.xml改下下面这样

<servlet>
  <servlet-name>action</servlet-name>
  <servlet-class>org.apache.struts.action.MyInterceptor.MyInterceptor</servlet-class>
  <init-param>
    <param-name>config</param-name>
    <param-value>/WEB-INF/struts-config.xml</param-value>
  </init-param>
  <init-param>
    <param-name>debug</param-name>
    <param-value>3</param-value>
  </init-param>
  <init-param>
    <param-name>detail</param-name>
    <param-value>3</param-value>
  </init-param>
  <load-on-startup>0</load-on-startup>
</servlet>
<servlet-mapping>
  <servlet-name>action</servlet-name>
  <url-pattern>*.do</url-pattern>
</servlet-mapping>

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