网关微服务简单配置

导入一下网关的基本依赖


    
        org.springframework.cloud
        spring-cloud-starter-gateway
    
    
        com.alibaba.cloud
        spring-cloud-starter-alibaba-nacos-discovery
    
     
            com.alibaba.cloud
            spring-cloud-starter-alibaba-nacos-config
        
    
        io.jsonwebtoken
        jjwt
    

服务引导类代码配置

package com.heima.app.gateway;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

@SpringBootApplication
@EnableDiscoveryClient  //开启注册中心
public class AppGatewayApplication {

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

配置

bootstrap.yml,在nacos中,它比application.yml优先级要高,当然你可以使用

server:
  port: 51601
spring:
  application:
    name: leadnews-app-gateway
  cloud:
    nacos:
      discovery:
        server-addr: 192.168.200.130:8848
      config:
        server-addr: 192.168.200.130:8848
        file-extension: yml

这里的ip+端口号都要根据你的情况修改

nacos的配置中心创建dataid为leadnews-app-gateway的yml配置

网关微服务简单配置_第1张图片

其中data id就是你的application name,微服务其实就是根据服务名称进行识别的

spring:
  cloud:
    gateway:
      globalcors:
        add-to-simple-url-handler-mapping: true
        corsConfigurations:
          '[/**]':
            allowedHeaders: "*"
            allowedOrigins: "*"
            allowedMethods:
              - GET
              - POST
              - DELETE
              - PUT
              - OPTION
      routes:
        # 平台管理
        - id: user
          uri: lb://leadnews-user
          predicates:
            - Path=/user/**
          filters:
            - StripPrefix= 1

 routes中的配置你需要修改,你的服务毕竟和我的不一样嘛,这样以来,我们直接给网关发送请求就可以访问这里的服务了,例如我的网关,你必须要在路径前面加上user才可以

全局过滤器

对于网关而言,他并不是只能在yml中设置,这是我的一个过滤器,起到了之前我们的那种springmvc身份拦截器的功能

@Component
@Slf4j
public class AuthorizeFilter implements Ordered, GlobalFilter {
    @Override
    public Mono filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        //1.获取request和response对象
        ServerHttpRequest request = exchange.getRequest();
        ServerHttpResponse response = exchange.getResponse();

        //2.判断是否是登录
        if(request.getURI().getPath().contains("/login")){
            //放行
            return chain.filter(exchange);
        }


        //3.获取token
        String token = request.getHeaders().getFirst("token");

        //4.判断token是否存在
        if(StringUtils.isBlank(token)){
            response.setStatusCode(HttpStatus.UNAUTHORIZED);
            return response.setComplete();
        }

        //5.判断token是否有效
        try {
            Claims claimsBody = AppJwtUtil.getClaimsBody(token);
            //是否是过期
            int result = AppJwtUtil.verifyToken(claimsBody);
            if(result == 1 || result  == 2){
                response.setStatusCode(HttpStatus.UNAUTHORIZED);
                return response.setComplete();
            }
        }catch (Exception e){
            e.printStackTrace();
            response.setStatusCode(HttpStatus.UNAUTHORIZED);
            return response.setComplete();
        }

        //6.放行
        return chain.filter(exchange);
    }

    /**
     * 优先级设置  值越小  优先级越高
     * @return
     */
    @Override
    public int getOrder() {
        return 0;
    }
}

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