SpringCloud入门(二十一) ------使用 Gateway配置路由

Gateway服务网关：

基于Netty的异步非阻塞模型，相比zuul性能更高，增加了spring5的特性。
作用：
浏览器无需关心各个服务的依赖关系，访问统一的IP地址，就可以访问多个微服务。开发者可以灵活的增加业务服务模块；可以在网关层做一些最上层的公用的操作，如过滤恶意请求、设置ip黑白名单、做身份认证、限流、负载均衡等。

Springcloud配置Gateway

Pom:

父pom管理的jar包版本:

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <junit.version>4.12</junit.version>
        <log4j.version>1.2.17</log4j.version>
        <lombok.version>1.16.18</lombok.version>
        <mysql.version>5.1.6</mysql.version>
        <durid.version>1.1.11</durid.version>
        <mybatis.spring.boot.version>1.1.1</mybatis.spring.boot.version>
    </properties>

    <!-- 子模块继承后，提供作用：锁定版本+子模块不用写groupId 和 version -->
    <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>Hoxton.SR1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>2.2.2.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>${mysql.version}</version>
            </dependency>
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>${durid.version}</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>${mybatis.spring.boot.version}</version>
            </dependency>
            <dependency>
                <groupId>ch.qos.logback</groupId>
                <artifactId>logback-core</artifactId>
                <version>1.2.3</version>
            </dependency>
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>${junit.version}</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>${log4j.version}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <finalName>jym-springCloud-parent</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <fork>true</fork>
                    <addResources>true</addResources>
                </configuration>
            </plugin>
        </plugins>
    </build>

gateway pom依赖：

		<dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>

全部pom:

   <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

        <dependency>
            <groupId>com.jym.springCloud</groupId>
            <artifactId>jym-common-api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

        <!-- openfeign -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>

    </dependencies>

yml:

server:
  port: 9527

spring:
  application:
    name: jym-cloud-gateway
  cloud:
    gateway:
      discovery:
        locator:
          enabled: true  #开启动态创建路由的功能，利用微服务名进行路由
      routes:
        - id: payment_jym01 #唯一标识
          uri: lb://jym-provider-payment   #转发的地址,写服务名称
          predicates: Path=/payment/findOne/** #判断匹配条件,即地址带有/payment/findOne/**的请求,会转发至lb:JYM-PROVIDER-PAYMENT

        - id: payment_jym02 #唯一标识
          uri: lb://jym-provider-payment  #转发的地址,写服务名称
          predicates: Path=/payment/lb/** #判断匹配条件,即地址带有/payment/lb/**的请求,会转发至lb:JYM-PROVIDER-PAYMENT

eureka:
  client:
    register-with-eureka: true
    fetch-registry: true
    service-url:
      defaultZone: http://eureka7001.com:7001/eureka,http://eureka7002.com:7002/eureka

启动类:

@SpringBootApplication
@EnableEurekaClient
public class GatewayApplication9527 {
    public static void main(String[] args) {
        SpringApplication.run(GatewayApplication9527.class,args);
    }
}

测试:

启动两个eureka 以及提供者后，启动该网关模块:

Getaway集成了ribbon，可以自动实现负载均衡

学习年限不足，知识过浅，说的不对请见谅。

世界上有10种人，一种是懂二进制的，一种是不懂二进制的。