spring cloud微服务分布式云架构-Gateway入门

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。

入门案例

接下来，介绍一下简单使用SpringCloud Gateway路由功能

创建项目

新建一个项目，项目种加入SpringCloud Gateway依赖，完整pom如下:

<?xml version="1.0" encoding="UTF-8"?> <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"> <modelVersion>4.0.0</modelVersion> <groupId>com.dalaoyang</groupId> <artifactId>springcloud_gateway</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>springcloud_gateway</name> <description>springcloud_gateway</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.0.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> <spring-cloud.version>Finchley.RC1</spring-cloud.version> </properties> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-gateway</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <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> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project> 

SpringBoot主程序

在类中配置路由

主程序中加入了一种配置路由的方法，利用@Bean的方式自定义RouteLocator。

package com.dalaoyang; 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 { public static void main(String[] args) { SpringApplication.run(SpringcloudGatewayApplication.class, args); } @Bean public RouteLocator customRouteLocator(RouteLocatorBuilder builder) { return builder.routes() .route(r -> r.path("/jianshu") .uri("http://www.jianshu.com/u/128b6effde53") ).build(); } } 

在配置文件中配置：

server: port: 8888 spring: application: name: gateway-service cloud: gateway: routes: - id: dalaoyang uri: http://www.dalaoyang.cn/ predicates: - Path=/dalaoyang/** - id: juejin uri: https://juejin.im/user/5aa50b96f265da23866f836e predicates: - Path=/juejin/** //Spring Cloud大型企业分布式微服务云架构源码 //请加一七九一七四三三八零 

到这里配置完成了。