Spring Cloud Gateway示例

1，首先，修改 pom.xml 文件，引入依赖。

<dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>
        <!--注册与发现-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
        <!--配置中心-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>2.1.0.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <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>

2，在应用的 /src/main/resources/bootstrap.properties 配置文件中配置 Nacos Config 元数据

spring.application.name=mall-gateway
server.port=88
spring.cloud.nacos.config.server-addr=127.0.0.1:8848
spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
spring.cloud.nacos.config.namespace=79fd1277-a69d-4c56-a837-b4cc9b9557e2
spring.cloud.nacos.config.group=dev

3，在应用的 /src/main/resources/application.yml 配置

spring:
  cloud:
      routes:
        - id: baidu_route
          uri: https://www.baidu.com # http://localhost:88/?url=baidu
          predicates:
            - Query=url,baidu

        - id: qq_route
          uri: https://www.qq.com # http://localhost:88/?url=qq
          predicates:
            - Query=url,qq

4，启动类开启 @EnableDiscoveryClient 注解

@SpringBootApplication
 @EnableDiscoveryClient
 public class ProviderApplication {
  public static void main(String[] args) {
    SpringApplication.run(ProviderApplication.class, args);
  }
 }

5，把配置搬到NACOS，新建如下

PS，如果出现如下数据库错误，是因为引入mybatis又没配置yml。

解决方案，在启动类排除数据库相关类，或者不引入总依赖

@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})
@EnableDiscoveryClient
public class MallGatewayApplication {
    public static void main(String[] args) {
        SpringApplication.run(MallGatewayApplication.class, args);
    }
}

Spring Cloud Gateway 与zuul Linkerd , RPS对比