Struts2拦截器

实现用户登录过滤

UserLoginInterceptor.java

package com.tcf.inter;

import java.util.List;

import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;
import com.tcf.entity.User;

public class UserLoginInterceptor extends AbstractInterceptor {
    private String excludeMethods;
    
    public String getExcludeMethods() {
        return excludeMethods;
    }

    public void setExcludeMethods(String excludeMethods) {
        this.excludeMethods = excludeMethods;
    }

    @Override
    public String intercept(ActionInvocation arg0) throws Exception {
        User user = (User) ActionContext.getContext().getSession().get("userInfo");
        String name = ActionContext.getContext().getName();
        String[] actions = excludeMethods.split(",");
        
        if(user == null && !contains(actions,name)){
            return Action.INPUT;
        }
        arg0.invoke();
        return Action.SUCCESS;
    }
    
    public boolean contains(String[] list,String str){
        for(String s:list){
            if(s.equals(str)){
                return true;
            }
        }
        return false;
    }
}

struts.xml

<interceptors>
    <interceptor name="userInter" class="com.tcf.inter.UserLoginInterceptor"></interceptor>
    <interceptor-stack name="allInter">
        <interceptor-ref name="userInter">
            <!--不进行拦截的action名称 -->
            <param name="excludeMethods">loginUser,registerUser,upload,uploades,download</param>
        </interceptor-ref>
        <interceptor-ref name="defaultStack" />
    </interceptor-stack>
</interceptors>
<default-interceptor-ref name="allInter"></default-interceptor-ref>