zuul网关

zuul网关

application.yml配置

server:
  port: 80
spring:
  application:
    name: zuul #服务名
zuul:
  routes:
    tg-eureka: /** #配置路由 此配置可以实现负载均衡ribbon
eureka:
  client:
    service-url:
      defaultZone: http://localhost:10086/eureka #加入eureka

启动类

@SpringBootApplication
@EnableDiscoveryClient
@EnableZuulProxy //开启zuul
public class ZuulEurekaApplication {

    public static void main(String[] args) {
        SpringApplication.run(ZuulEurekaApplication.class, args);
    }

}

z自定义拦截器

package com.zuul.filter;

import com.netflix.zuul.ZuulFilter;
import com.netflix.zuul.context.RequestContext;
import com.netflix.zuul.exception.ZuulException;
import org.apache.commons.lang.StringUtils;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;

@Component
public class MyFilter extends ZuulFilter {

    /**
     * 返回四种类型：
     * pre pre-routing过滤，路由前过滤
     * routing 在路由请求时被调用
     * post routing和error过滤器之后被调用
     * error 处理请求发生错误的时候调用
     * @return
     */
    @Override
    public String filterType() {
        return "pre";
    }

    @Override
    public int filterOrder() {
        return 10;
    }

    @Override
    public boolean shouldFilter() {
        return true;
    }

    /**
     *     CONTINUE(100, "Continue", "请继续发送请求的剩余部分"),
     *     SWITCHING_PROTOCOLS(101, "Switching Protocols", "协议切换"),
     *     PROCESSING(102, "Processing", "请求将继续执行"),
     *     CHECKPOINT(103, "Checkpoint", "可以预加载"),
     *     OK(200, "OK", "请求已经成功处理"),
     *     CREATED(201, "Created", "请求已经成功处理，并创建了资源"),
     *     ACCEPTED(202, "Accepted", "请求已经接受，等待执行"),
     *     NON_AUTHORITATIVE_INFORMATION(203, "Non-Authoritative Information", "请求已经成功处理，但是信息不是原始的"),
     *     NO_CONTENT(204, "No Content", "请求已经成功处理，没有内容需要返回"),
     *     RESET_CONTENT(205, "Reset Content", "请求已经成功处理，请重置视图"),
     *     PARTIAL_CONTENT(206, "Partial Content", "部分Get请求已经成功处理"),
     *     MULTI_STATUS(207, "Multi-Status", "请求已经成功处理，将返回XML消息体"),
     *     ALREADY_REPORTED(208, "Already Reported", "请求已经成功处理，一个DAV的绑定成员被前一个请求枚举，并且没有被再一次包括"),
     *     IM_USED(226, "IM Used", "请求已经成功处理，将响应一个或者多个实例"),
     *     MULTIPLE_CHOICES(300, "Multiple Choices", "提供可供选择的回馈"),
     *     MOVED_PERMANENTLY(301, "Moved Permanently", "请求的资源已经永久转移"),
     *     FOUND(302, "Found", "请重新发送请求"),
     *     SEE_OTHER(303, "See Other", "请以Get方式请求另一个URI"),
     *     NOT_MODIFIED(304, "Not Modified", "资源未改变"),
     *     USE_PROXY(305, "Use Proxy", "请通过Location域中的代理进行访问"),
     *     TEMPORARY_REDIRECT(307, "Temporary Redirect", "请求的资源临时从不同的URI响应请求"),
     *     RESUME_INCOMPLETE(308, "Resume Incomplete", "请求的资源已经永久转移"),
     *     BAD_REQUEST(400, "Bad Request", "请求错误，请修正请求"),
     *     UNAUTHORIZED(401, "Unauthorized", "没有被授权或者授权已经失效"),
     *     PAYMENT_REQUIRED(402, "Payment Required", "预留状态"),
     *     FORBIDDEN(403, "Forbidden", "请求被理解，但是拒绝执行"),
     *     NOT_FOUND(404, "Not Found", "资源未找到"),
     *     METHOD_NOT_ALLOWED(405, "Method Not Allowed", "请求方法不允许被执行"),
     *     NOT_ACCEPTABLE(406, "Not Acceptable", "请求的资源不满足请求者要求"),
     *     PROXY_AUTHENTICATION_REQUIRED(407, "Proxy Authentication Required", "请通过代理进行身份验证"),
     *     REQUEST_TIMEOUT(408, "Request Timeout", "请求超时"),
     *     CONFLICT(409, "Conflict", "请求冲突"),
     *     GONE(410, "Gone", "请求的资源不可用"),
     *     LENGTH_REQUIRED(411, "Length Required", "Content-Length未定义"),
     *     PRECONDITION_FAILED(412, "Precondition Failed", "不满足请求的先决条件"),
     *     REQUEST_ENTITY_TOO_LARGE(413, "Request Entity Too Large", "请求发送的实体太大"),
     *     REQUEST_URI_TOO_LONG(414, "Request-URI Too Long", "请求的URI超长"),
     *     UNSUPPORTED_MEDIA_TYPE(415, "Unsupported Media Type", "请求发送的实体类型不受支持"),
     *     REQUESTED_RANGE_NOT_SATISFIABLE(416, "Requested range not satisfiable", "Range指定的范围与当前资源可用范围不一致"),
     *     EXPECTATION_FAILED(417, "Expectation Failed", "请求头Expect中指定的预期内容无法被服务器满足"),
     *     UNPROCESSABLE_ENTITY(422, "Unprocessable Entity", "请求格式正确，但是由于含有语义错误，无法响应"),
     *     LOCKED(423, "Locked", "当前资源被锁定"),
     *     FAILED_DEPENDENCY(424, "Failed Dependency", "由于之前的请求发生错误，导致当前请求失败"),
     *     UPGRADE_REQUIRED(426, "Upgrade Required", "客户端需要切换到TLS1.0"),
     *     PRECONDITION_REQUIRED(428, "Precondition Required", "请求需要提供前置条件"),
     *     TOO_MANY_REQUESTS(429, "Too Many Requests", "请求过多"),
     *     REQUEST_HEADER_FIELDS_TOO_LARGE(431, "Request Header Fields Too Large", "请求头超大，拒绝请求"),
     *     INTERNAL_SERVER_ERROR(500, "Internal Server Error", "服务器内部错误"),
     *     NOT_IMPLEMENTED(501, "Not Implemented", "服务器不支持当前请求的部分功能"),
     *     BAD_GATEWAY(502, "Bad Gateway", "响应无效"),
     *     SERVICE_UNAVAILABLE(503, "Service Unavailable", "服务器维护或者过载，拒绝服务"),
     *     GATEWAY_TIMEOUT(504, "Gateway Timeout", "上游服务器超时"),
     *     HTTP_VERSION_NOT_SUPPORTED(505, "HTTP Version not supported", "不支持的HTTP版本"),
     *     VARIANT_ALSO_NEGOTIATES(506, "Variant Also Negotiates", "服务器内部配置错误"),
     *     INSUFFICIENT_STORAGE(507, "Insufficient Storage", "服务器无法完成存储请求所需的内容"),
     *     LOOP_DETECTED(508, "Loop Detected", "服务器处理请求时发现死循环"),
     *     BANDWIDTH_LIMIT_EXCEEDED(509, "Bandwidth Limit Exceeded", "服务器达到带宽限制"),
     *     NOT_EXTENDED(510, "Not Extended", "获取资源所需的策略没有被满足"),
     *     NETWORK_AUTHENTICATION_REQUIRED(511, "Network Authentication Required", "需要进行网络授权");;
     * @throws ZuulException
     */
    @Override
    public Object run() throws ZuulException {
        //RequestContext zuul上下文
        RequestContext context = RequestContext.getCurrentContext();
        HttpServletRequest request = context.getRequest();
        String token = request.getParameter("token");
        //如果为空
        if(StringUtils.isBlank(token)){
            //过滤该请求
            context.sendZuulResponse();
            context.setResponseStatusCode(HttpStatus.UNAUTHORIZED.value());
            context.setResponseBody("token is empty");
        }
        return null;
    }
}