用拦截器实现登录验证功能AuthorizationInterceptor

用拦截器实现登录验证功能AuthorizationInterceptor ：

 

package com.interceptor;   
  
import com.opensymphony.xwork2.ActionInvocation;   
import com.opensymphony.xwork2.interceptor.*;   
import com.opensymphony.xwork2.*;   
import java.util.*;   
/**  
 * @author http://xp9802.iteye.com/  
 */  
public class AuthorizationInterceptor extends AbstractInterceptor {   
    private String ignoreActions;   
  
    // ignoreActions属性的getter方法   
    public String getIgnoreActios() {   
        return ignoreActions;   
    }   
  
    // ignoreActions属性的setter方法   
    public void setIgnoreActions(String ignoreActions) {   
        this.ignoreActions = ignoreActions;   
    }   
  
    @Override  
    public String intercept(ActionInvocation invocation) throws Exception {   
        ActionContext ctx = invocation.getInvocationContext();   
  
        Map session = ctx.getSession();   
        String user = (String) session.get("username");   
  
        boolean ignore = false;   
        String currentAction = invocation.getProxy().getActionName();   
        String[] actions = ignoreActions.split(",");   
  
        for (String action : actions) {   
            if (currentAction.matches(action.trim())) {   
                ignore = true;   
                break;   
            }   
        }   
  
        if (user != null || ignore == true) {   
  
            return invocation.invoke();   
        } else {   
            return Action.LOGIN;   
        }   
  
    }   
}  

 

在struts.xml文件里面配置该拦截器:

 

<interceptors>    
    <interceptor name="authorization" class="com.interceptor.AuthorizationInterceptor" />    
    <interceptor-stack name="myStack">    
        <interceptor-ref name="authorization">    
            <param name="ignoreActions"> validate_code,register.*,.*login.*,upload,connector</param>    
     </interceptor-ref> <interceptor-ref name="defaultStack" />   
</interceptor-stack>    
lt;/interceptors>    
<default-interceptor-ref name="myStack"/>