package com.example.demomycenzuul.myFilter;

import com.netflix.zuul.ZuulFilter;

import com.netflix.zuul.context.RequestContext;

import org.apache.commons.lang.StringUtils;

import org.slf4j.LoggerFactory;

import org.springframework.cloud.netflix.zuul.filters.support.FilterConstants;

import org.springframework.context.annotation.Bean;

import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;

import java.util.logging.Logger;

@Component

public class AccessFilter extends ZuulFilter {

    @Override

    public String filterType() {

        return FilterConstants.PRE_TYPE;

    }

    @Override

    public int filterOrder() {

        return 0;

    }

    @Override

    public boolean shouldFilter() {

        return true;

    }

    @Override

    public Object run() {

        System.out.println("进入zuul拦截");

        //获取上下文

        RequestContext ctx = RequestContext.getCurrentContext();

        //获取Request

        HttpServletRequest request = ctx.getRequest();

        //获取请求参数accessToken

        String accessToken = request.getParameter("accessToken");

        //使用String工具类

        if (StringUtils.isBlank(accessToken)) {

            ctx.setSendZuulResponse(false);  //进行拦截

            ctx.setResponseStatusCode(401);

            try {

                ctx.getResponse().getWriter().write("accessToken is empty,-------401");

            } catch (Exception e) {

            }

            return null;

        }

        return null;

    }

}