struts中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.*;  

public class AuthorizationInterceptor extends AbstractInterceptor {  
    private String 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;  
        }  
    }
 
    public String getIgnoreActios() {  
        return ignoreActions;  
    }  
  
    public void setIgnoreActions(String ignoreActions) {  
        this.ignoreActions = ignoreActions;  
    }  
}

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>   
</interceptors>   
<default-interceptor-ref name="myStack"/>

原帖地址:http://www.cnblogs.com/jobscn/archive/2011/11/22/2258343.html