<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-eureka</artifactId>
    <version>1.3.5.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-zuul</artifactId>
    <version>1.3.5.RELEASE</version>
</dependency>

server:
  port: 7004  # 端口
spring:
  application:
    name: zuul-getway  # 服務(wù)名
eureka:
  client:
    service-url:
      defaultZone: http://jack:666@localhost:8764/eureka/  # 需要注冊(cè)到eureka
  instance:
    instance-id: ${spring.application.name}:${server.port}
zuul:
  routes:
    order-service: /od/**  # 對(duì)某個(gè)服務(wù)自定義路由規(guī)則
    serviceId: order-service # 這個(gè)配置可以實(shí)現(xiàn)負(fù)載均衡，默認(rèn)是輪詢(xún)
  # 設(shè)置某些服務(wù)不要進(jìn)行反向代理 進(jìn)行路由，多個(gè)服務(wù)用逗號(hào)隔開(kāi)
  ignored-services: order-service, user-service
  prefix: /api # 請(qǐng)求路徑的前綴

/**
 * pre過(guò)濾器
 * @Author Big.Hu
 */
@Component
public class TokenFilter extends ZuulFilter {
    @Override
    public Object run() {
        System.err.println("執(zhí)行pre前置過(guò)濾器。。。。。。。。。");
        RequestContext currentContext = RequestContext.getCurrentContext();
        HttpServletRequest request = currentContext.getRequest();
        StringBuffer requestURL = request.getRequestURL();
        System.out.println("requestURL：" + requestURL);
        // 獲取請(qǐng)求的參數(shù)
        String token = request.getParameter("token");
        if (StringUtils.isEmpty(token)) {
            // 如果參數(shù)為空則過(guò)濾該請(qǐng)求，不對(duì)其進(jìn)行路由
            currentContext.setSendZuulResponse(false);
            // 設(shè)置錯(cuò)誤碼：401
            currentContext.setResponseStatusCode(HttpStatus.SC_UNAUTHORIZED);
            currentContext.set("SUCCESS", false);
        } else {
            // 不過(guò)濾該請(qǐng)求，對(duì)其進(jìn)行路由
            currentContext.setSendZuulResponse(true);
            // 設(shè)置成功碼：200
            currentContext.setResponseStatusCode(HttpStatus.SC_OK);
            currentContext.set("SUCCESS", true);
        }
        System.out.println("token：" + token);
        return null;
    }
    /**
     * 當(dāng)前filter類(lèi)型：pre、post、route、error
     */
    @Override
    public String filterType() {
        return FilterConstants.PRE_TYPE;
    }
    /**
     * 表示當(dāng)前filter優(yōu)先級(jí)
     */
    @Override
    public int filterOrder() {
        return FilterConstants.PRE_DECORATION_FILTER_ORDER - 1;
    }
    /**
     * 是否執(zhí)行該過(guò)濾器？
     **/
    @Override
    public boolean shouldFilter() {
        return true;
    }
}

/**
 * Post過(guò)濾器
 * @Author Big.Hu
 */
@Component
public class PostFilter extends ZuulFilter {
    /**
     * POST過(guò)濾器：在route和error過(guò)濾器之后執(zhí)行
     */
    @Override
    public String filterType() {
        return FilterConstants.POST_TYPE;
    }
    @Override
    public int filterOrder() {
        return FilterConstants.SEND_RESPONSE_FILTER_ORDER - 1;
    }
    @Override
    public boolean shouldFilter() {
        return true;
    }
    @Override
    public Object run() {
        System.err.println("執(zhí)行Post過(guò)濾器。。。。。。。。。");
        RequestContext currentContext = RequestContext.getCurrentContext();
        HttpServletResponse response = currentContext.getResponse();
        Cookie cookie = new Cookie("name", "Jack.Hu");
        cookie.setMaxAge(60 * 60 * 24);
        response.addCookie(cookie);
        return null;
    }
}