SpringCloud Zuul 请求过滤配置

灰太狼 2022-03-15 08:42 238阅读 0赞

![20190227110019256.png][]

个人博客网：www.lfuping.cn    (你想要这里多有)

![20181126154005.png][]

Zuul 请求过滤配置  
比如登录某个系统需要身份验证，用户名密码啥的；

请求服务，也可以来设置身份验证，也就是过滤非法请求；Zuul通过ZuulFilter过滤器实现；  
一般具体实现的话 每次经过Zuul服务网关 都对带来的token进行有效性验证；

定义一个 AccessFilter类：

package com.li.springcloud.zuul.config;
    import javax.servlet.http.HttpServletRequest;
    import com.netflix.zuul.ZuulFilter;
    import com.netflix.zuul.context.RequestContext;
    import com.netflix.zuul.exception.ZuulException;
    /**
     * Zuul 请求过滤器
     * @author Administrator
     *
     */
    public class AccessFilter extends ZuulFilter {
        /**
         * 判断该过滤器是否要被执行
         */
        @Override
        public boolean shouldFilter() {
            // TODO Auto-generated method stub
            return true;
        }
        /**
         * 过滤器的具体执行逻辑
         */
        @Override
        public Object run() throws ZuulException {
            RequestContext ctx = RequestContext.getCurrentContext();
            HttpServletRequest request = ctx.getRequest();
            String parameter = request.getParameter("accessToken");
            System.out.println(request.getRequestURL().toString() + " 请求访问");
            if (parameter == null) {
                System.out.println("accessToken为空！");
                ctx.setSendZuulResponse(false);
                ctx.setResponseStatusCode(401);
                ctx.setResponseBody("{\"result\":\"accessToken is empty!\"}");
                return null;
            }
            // token判断逻辑
            System.out.println(request.getRequestURL().toString() + " 请求成功");
            return null;
        }
        /**
         * 过滤器的类型 这里用pre，代表会再请求被路由之前执行
         */
        @Override
        public String filterType() {
            // TODO Auto-generated method stub
            return "pre";
        }
        /**
         * 过滤器的执行顺序
         */
        @Override
        public int filterOrder() {
            // TODO Auto-generated method stub
            return 0;
        }
    }

开启下 Filter配置：

package com.li.springcloud.zuul.config;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    /**
     * Zuul配置
     * 
     * @author Administrator
     *
     */
    @Configuration
    public class ZuulConfig {
        @Bean
        public AccessFilter accessFilter() {
            return new AccessFilter();
        }
    }

二、测试：  
1.启动eureka单机或者集群，然后再启动下一个服务生产者springcloud-provider-1单机或者集群，以及 zuul网关服务；  
2.请求访问[http://localhost:3001/lifuping/providerServer/provider/list][http_localhost_3001_lifuping_providerServer_provider_list]  
发现歇逼了：  
![20190301160832.png][]

3.带个 accessToken [http://localhost:3001/lifuping/providerServer/provider/list?accessToken=3232][http_localhost_3001_lifuping_providerServer_provider_list_accessToken_3232]  
![20190301160903.png][]

token的生成和验证具体要根据需求设计来；

源码链接: https://pan.baidu.com/s/1C7QXi56YjdloPN52b371VQ 
    提取码: 5ft2

![gzh.png][]

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[20190227110019256.png]: /images/20220315/0ced7f3d5cf2479fbc046c82d8ff662d.png
[20181126154005.png]: /images/20220315/ba59a61fbb0043e0973a3e5b9c3c9e40.png
[http_localhost_3001_lifuping_providerServer_provider_list]: http://localhost:3001/lifuping/providerServer/provider/list
[20190301160832.png]: /images/20220315/d29b7a0375974138af32532dd9b3d906.png
[http_localhost_3001_lifuping_providerServer_provider_list_accessToken_3232]: http://localhost:3001/lifuping/providerServer/provider/list?accessToken=3232
[20190301160903.png]: /images/20220315/2dc9a207de1d46fc85bc12023888a97d.png
[gzh.png]: /images/20220315/22a53ec5568449e6827b992eff2f2b87.png