常用的struts2的Interceptor拦截器

我们可以自定义Interceptor继承com.opensymphony.xwork2.interceptor.AbstractInterceptor，即可定义拦截器：
    拦截器可以与Filter过滤器集合起来使用，Interceptor的配置在struts.xml中配置，可以拦截指定的struts2请求，一般是指.action后缀的请求。
[java]
package edu.press.utils;

import javax.servlet.http.*;
import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;
import org.apache.struts2.ServletActionContext;

/**
* Interceptors for security
* @author
* @version 1.0
*
*/
public class AdminInterceptor extends AbstractInterceptor {

    private static final long serialVersionUID = 1L;
    private HttpSession session;

    public String intercept(ActionInvocation invocation) throws Exception {
        session = ServletActionContext.getRequest().getSession(true);
        // 简单的验证会话session是否有指定属性
        if (session.getAttribute("XXXXXXXX") != null) {
            return invocation.invoke(); //权限符合，请求顺利执行
        }
        return Action.LOGIN; //请求未通过，转向LOGIN的result
    }
}
在struts.xml文件中配置:
[html]
<package name="press" extends="struts-default">
        <interceptors>
            <interceptor name="adminInterceptor"
                />
            <interceptor-stack name="adminStack">
                <interceptor-ref name="basicStack" />
                <interceptor-ref name="adminInterceptor" />
            </interceptor-stack>
        </interceptors>
        <global-results>
              <result name="login" type="redirect">/login.jsp?err=1</result>
        </global-results>
下边这是我们项目中的定义，拦截了多有继承struts-defult的package里的Action
[html]
<package name="struts-estone" extends="struts-default">
     <interceptors>
            <interceptor name="authority" class="com.estone.www.kepuoa.admin.action.interceptor.AuthorityInterceptor"/>
            <interceptor-stack name="auctionStack">
                <interceptor-ref name="defaultStack"/>
                <interceptor-ref name="authority"/>
            </interceptor-stack>
</interceptors>
        <default-interceptor-ref name="auctionStack"/>
<global-results>
   
   <result name="login" type="redirect">/forword.jsp</result>
   <result name="input">/error.jsp</result>
</global-results>
<global-exception-mappings>
   <exception-mapping result="input" exception="java.lang.Exception"></exception-mapping>
</global-exception-mappings>
</package>

对于需要拦截的action，可按照如下例子：
[html]
<action name="uploadResource" method="upload">
            <interceptor-ref name="adminStack"/>
            <result name="success" type="redirect">XXXXXXXXXXX</result>
            <result name="input">XXXXXXXXXXXXXXXX</result>
</action>

摘自那年那月那天

补充：软件开发 , Java ,