package com.basic.analy.filter;

import com.basic.analy.utils.HttpUtil;
import com.basic.analy.utils.RequestUtil;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
@Component           //必须加，让springboot扫描的到
@WebFilter(urlPatterns = "/*", filterName = "tokenFilter")
public class TokenFilter implements Filter {

    @Autowired
    private HttpUtil httpUtil;

    private Logger log = Logger.getLogger(TokenFilter.class);

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        log.info("过滤器初始化");

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {

        HttpServletRequest request = (HttpServletRequest)servletRequest;
        HttpServletResponse response = (HttpServletResponse)servletResponse;
        String token= RequestUtil.getTokenByParam();
        String userName = httpUtil.doGet(token);
        HttpSession session = request.getSession();
        session.setAttribute("userName",userName);
        filterChain.doFilter(servletRequest, servletResponse);                  //表示放行，进行下一个操作，往下没有拦截链的话就进入该进的资源或者controller
        /*if(userName!=null&&!"".equals(userName)){
            log.info("当前用户为"+userName+"    是合法用户，可以放行！！");

        }else{
            log.info("不是合法用户，不能放行！！");
        }*/

    }

    @Override
    public void destroy() {
        log.info("过滤器销毁");

    }
}