spring cloud gateway 入门
spring cloud gateway 概述Spring Cloud Gateway是Spring官方基于Spring 5.0,Spring Boot 2.0和Project Reactor等技术开发的网关,Spring Cloud Gateway旨在为微服务架构提供一种简单而有效的统一的API路由管理方式。Spring Cloud Gateway作为Spring Cloud生态系中的网关,目标
spring cloud gateway 概述
Spring Cloud Gateway是Spring官方基于Spring 5.0,Spring Boot 2.0和Project Reactor等技术开发的网关,Spring Cloud Gateway旨在为微服务架构提供一种简单而有效的统一的API路由管理方式。Spring Cloud Gateway作为Spring Cloud生态系中的网关,目标是替代Netflix ZUUL,其不仅提供统一的路由方式,并且基于Filter链的方式提供了网关基本的功能,例如:安全,监控/埋点,和限流等。
spring cloud gateway 案例
新建一个spring boot项目,添加spring cloud相关依赖的jar包
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>ch18-1</artifactId>
<groupId>cn.springcloud.book</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>ch18-1-gateway</artifactId>
<packaging>jar</packaging>
<name>ch18-1-gateway</name>
<url>http://springcloud.cn</url>
<properties>
<spring-cloud.version>Finchley.M8</spring-cloud.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
<pluginRepository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
</project>
spring cloud gateway 网关路由方式
新的gateway网关路由配置有两种方式:
1.通过@Bean自定义RouteLocator,在启动主类Application中配置
2.在配置文件yml中配置
这两种方式都可以实现网关路由是等价的,但是通常项目开发中会使用配置文件yml方式。
启动类Application配置网关路由:
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.gateway.route.RouteLocator;
import org.springframework.cloud.gateway.route.builder.RouteLocatorBuilder;
import org.springframework.context.annotation.Bean;
@SpringBootApplication
public class SpringCloudGatewayApplication {
@Bean
public RouteLocator customRouteLocator(RouteLocatorBuilder builder) {
return builder.routes()
//basic proxy
.route(r -> r.path("/baidu")
.uri("http://baidu.com:80/")
).build();
}
public static void main(String[] args) {
SpringApplication.run(SpringCloudGatewayApplication.class, args);
}
}
配置文件application.yml配置网关路由:
server:
port: 8080
spring:
application:
name: spring-cloud-gateway
spring:
cloud:
gateway:
routes:
- id: 163_route
uri: http://www.163.com/
predicates:
- Path=/163
logging:
level:
org.springframework.cloud.gateway: TRACE
org.springframework.http.server.reactive: DEBUG
org.springframework.web.reactive: DEBUG
reactor.ipc.netty: DEBUG
运行测试
配置好了,启动服务
访问 http://localhost:8080/baidu,路由转发到 http://www.baidu.com
访问http://localhost:8080/163, 路由转发到 http://www.163.com
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