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39、微服务GateWay 新一代网关
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1、SpringCloud gateway三个重要的概念：路由，断言 、过滤
2、创建cloud-gateway-gateway9527 项目编写pom.xml添加依赖
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
<dependency>
<groupId>com.atguigu.springcloud</groupId>
<artifactId>cloud-api-commons</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
</dependencies>
编写application.yml配置文件
server:
port: 9527
spring:
application:
name: cloud-gateway
cloud:
gateway:
routes:
- id: payment-routh01
uri: http://localhost:8001 predicates:
- Path=/payment/get/**
- id: payment-routh02
uri: http://localhost:8001
predicates:
- Path=/payment/lb/**
eureka:
instance:
hostname: cloud-gateway-service
client:
register-with-eureka: true
fetch-registry: true
service-url:
# defaultZone: http://localhost:7001/eureka
defaultZone: http://eureka7001.com:7001/eureka,http://eureka7002.com:7002/eureka
编写主启动类
@SpringBootApplication
@EnableEurekaClient
public
class
GateWayApplication9527 {
public
static
void
main(String[] args) {
SpringApplication.run(GateWayApplication9527.
class
,args);
}
}
测试cloud-provider-payment8001 服务提供者自测：http://localhost:8001/payment/get/1409365580926001153
测试网关gateway服务地址转发到服务提供者：http://localhost:9527/payment/get/1409365580926001153
2、application.yml配置动态路由
server:
port: 9527
spring:
application:
name: cloud-gateway
cloud:
gateway:
discovery:
locator:
enabled: true #开启动态路由
routes:
- id: payment-routh01
uri: lb://cloud-payment-service predicates:
- Path=/payment/get/**
- id: payment-routh02
uri: lb://cloud-payment-service
predicates:
- Path=/payment/lb/**
eureka:
instance:
hostname: cloud-gateway-service
client:
register-with-eureka: true
fetch-registry: true
service-url:
# defaultZone: http://localhost:7001/eureka
defaultZone: http://eureka7001.com:7001/eureka,http://eureka7002.com:7002/eureka
3、GateWay 的 Filter 自定义过滤器
@Component
@Slf4j
public
class MyLogGatewayFilter implements GlobalFilter, Ordered {
@Override
public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
String username = exchange.getRequest().getQueryParams().getFirst("username");
if(username == null) {
log.info("*******************非法的请求********************");
exchange.getResponse().setStatusCode(HttpStatus.NOT_ACCEPTABLE);
return exchange.getResponse().setComplete();
}
return chain.filter(exchange);
}
@Override
publicint getOrder() {
return 0;
}
}
测试地址：http://localhost:9527/payment/lb?username=123
原文：https://www.cnblogs.com/shunWcs/p/14958293.html
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