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

/**
 * 验证用户是否登录
 * @author Administrator
 *
 */
public class CheckIsLoginInterceptor extends AbstractInterceptor{

    private static final long serialVersionUID = 5572804837134361839L;

    @Override
    public String intercept(ActionInvocation actionInvocation) throws Exception {
        User user = (User)actionInvocation.getInvocationContext().getSession().get("user");
        
        if(user==null){
            ActionContext.getContext().getSession().put("loginMessage", "请先登录！");
            return Action.LOGIN;
        }
        return actionInvocation.invoke();
    }

}