SpringBoot2.7 + Nacos + GateWay

pom包，主要是记录版本

4.0.0

org.springframework.boot
spring-boot-starter-parent
2.7.17

com.student.gateway
demo
0.0.1-SNAPSHOT
demo
Demo project for Spring Boot

<java.version>8</java.version>

复制代码

     <dependency>
         <groupId>com.alibaba.cloud</groupId>
         <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
         <version>2021.0.5.0</version>
     </dependency>

     <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-gateway -->
     <dependency>
         <groupId>org.springframework.cloud</groupId>
         <artifactId>spring-cloud-starter-gateway</artifactId>
         <version>3.1.9</version>
     </dependency>

     <dependency>
         <groupId>com.alibaba.cloud</groupId>
         <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
         <version>2021.0.5.0</version>
     </dependency>

     <!--sentinel gateway-->
     <dependency>
         <groupId>com.alibaba.cloud</groupId>
         <artifactId>spring-cloud-alibaba-sentinel-gateway</artifactId>
         <version>2021.0.5.0</version>
     </dependency>
     
     <dependency>
         <groupId>com.alibaba.cloud</groupId>
         <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
         <version>2021.0.5.0</version>
     </dependency>

     <!-- 202.0.5版本的cloud，需要这个注解才能负载均衡也就是 lb:student才生效 -->
     <dependency>
         <groupId>org.springframework.cloud</groupId>
         <artifactId>spring-cloud-starter-loadbalancer</artifactId>
         <version>3.1.4</version>
     </dependency>

     <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
     </dependency>
 </dependencies>

 <build>
     <plugins>
         <plugin>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-maven-plugin</artifactId>
         </plugin>
     </plugins>
 </build>

Nacos搭建，我这边是2.x版本的
yaml配置

server:
port: 8004

spring:
application:
name: gateway
config:
import: nacos:gateway.yaml // config的全名
cloud:
nacos:
discovery:
server-addr: 127.0.0.1:8848
config:
server-addr: 127.0.0.1:8848
file-extension: yaml
sentinel:
transport:
dashboard: 127.0.0.1:8005
eager: true
gateway:
routes:
- id: student
uri: lb://student
predicates:
- Path=/api/redis/**
filters:
- StripPrefix=1 // 过滤前缀
- Log=23 // 自定义过滤器
自定义过滤器写法

java 复制代码

package com.student.gateway.demo.filters.gateway;

import org.springframework.cloud.gateway.filter.GatewayFilter;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.factory.AbstractGatewayFilterFactory;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
import java.util.Arrays;
import java.util.List;

@Component
public class LogGatewayFilterFactory extends AbstractGatewayFilterFactory<LogModal> {

    public LogGatewayFilterFactory() {
        super(LogModal.class);
    }

    @Override
    public List<String> shortcutFieldOrder() {
        return Arrays.asList("name1");
    }

    @Override
    public GatewayFilter apply(LogModal config) {
        return new GatewayFilter() {
            @Override
            public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
                System.out.println(config.getName1());
                Mono<Void> mono = chain.filter(exchange);
                return mono;
            }
        };
    }
}

java 复制代码

package com.student.gateway.demo.filters.gateway;

public class LogModal {

    private String name1;

    public String getName1() {
        return name1;
    }

    public void setName1(String name1) {
        this.name1 = name1;
    }

}

全局过滤器

java 复制代码

package com.student.gateway.demo.filters.gateway;

import org.springframework.cloud.gateway.filter.GatewayFilter;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.factory.AbstractGatewayFilterFactory;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
import java.util.Arrays;
import java.util.List;

@Component
public class LogGatewayFilterFactory extends AbstractGatewayFilterFactory<LogModal> {

    public LogGatewayFilterFactory() {
        super(LogModal.class);
    }

    @Override
    public List<String> shortcutFieldOrder() {
        return Arrays.asList("name1");
    }

    @Override
    public GatewayFilter apply(LogModal config) {
        return new GatewayFilter() {
            @Override
            public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
                System.out.println(config.getName1());
                Mono<Void> mono = chain.filter(exchange);
                return mono;
            }
        };
    }
}

sentinel的下载，限流和熔断