Spring cloud 基础框架集成

1. 注册中心 -eurekar

1. pom依赖

<?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.forezp</groupId>

    <artifactId>sc-f-chapter1</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <packaging>pom</packaging>

    <name>sc-f-chapter1</name>

    <description>Demo project for Spring Boot</description>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>2.0.3.RELEASE</version>

        <relativePath/>

    </parent>

    <modules>

        <module>eureka-server</module>

        <module>service-hi</module>

    </modules>

    <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.RELEASE</spring-cloud.version>

    </properties>

    <dependencies>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-test</artifactId>

            <scope>test</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>

        </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>

2. Application.java

@SpringBootApplication

@EnableEurekaServer

public class EurekaServerApplication {

    public static void main(String[] args) {

        SpringApplication.run( EurekaServerApplication.class, args );

    }

}

3. yml配置

server:

  port: 8761

eureka:

  instance:

    hostname: localhost

  client:

    registerWithEureka: false

    fetchRegistry: false

    serviceUrl:

      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

spring:

  application:

    name: eurka-server

2. 服务提供者 -server

1. pom依赖

<?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.forezp</groupId>

    <artifactId>sc-f-chapter1</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <packaging>pom</packaging>

    <name>sc-f-chapter1</name>

    <description>Demo project for Spring Boot</description>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>2.0.3.RELEASE</version>

        <relativePath/>

    </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.RELEASE</spring-cloud.version>

    </properties>

    <dependencies>

        <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-web</artifactId>

        </dependency>

    </dependencies>

    <build>

        <plugins>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

        </plugins>

    </build>

</project>

2. Application.java

@SpringBootApplication

@EnableEurekaClient

@RestController

public class ServiceHiApplication {

    public static void main(String[] args) {

        SpringApplication.run( ServiceHiApplication.class, args );

    }

    @Value("${server.port}")

    String port;

    @RequestMapping("/hi")

    public String home(@RequestParam(value = "name", defaultValue = "forezp") String name) {

        return "hi " + name + " ,i am from port:" + port;

    }

}

3. yml配置

server:

  port: 8762

spring:

  application:

    name: service-hi

eureka:

  client:

    serviceUrl:

      defaultZone: http://localhost:8761/eureka/

3. Ribbon消费者服务中心

1. pom依赖

<?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">

    <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.RELEASE</spring-cloud.version>

    </properties>

   <dependencies>

       <!-- 1: 发现中心 -->

        <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-web</artifactId>

        </dependency>

       <!-- 2: ribbon代理 -->

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>

        </dependency>

        <!-- 3: hystrix熔断 -->

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>

         </dependency>

        <!-- 4:配置中心客户端 -->

       	<dependency>

			<groupId>org.springframework.cloud</groupId>

			<artifactId>spring-cloud-starter-config</artifactId>

		</dependency>

       <!-- 5：链路追踪客户端 -->

		<dependency>

			<groupId>org.springframework.cloud</groupId>

			<artifactId>spring-cloud-starter-zipkin</artifactId>

		</dependency>

       <!-- 6:-hystrix-dashboard客户端 -->

       <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>

       </dependency>

       <!-- 7:监控中心客户端 -->

        <dependency>

            <groupId>de.codecentric</groupId>

            <artifactId>spring-boot-admin-starter-client</artifactId>

            <version>2.1.0</version>

        </dependency>

    </dependencies>

    <build>

        <plugins>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

        </plugins>

    </build>

</project>

2. Application.java

@SpringBootApplication

@EnableEurekaClient

@EnableDiscoveryClient

@RestController

@EnableHystrix

@EnableHystrixDashboard

public class ServiceRibbonApplication {

    public static void main(String[] args) {

        SpringApplication.run( ServiceRibbonApplication.class, args );

    }

    @Bean

    @LoadBalanced

    RestTemplate restTemplate() {

        return new RestTemplate();

    }

    @Autowired

    HelloService helloService;

    @GetMapping(value = "/hi")

    public String hi(@RequestParam String name) {

        return helloService.hiService( name );

    }

}

@Service

public class HelloService {

    @Autowired

    RestTemplate restTemplate;

    public String hiService(String name) {

        return restTemplate.getForObject("http://SERVICE-HI/hi?name="+name,String.class);

    }

    @HystrixCommand(fallbackMethod = "hiError")

    public String hiService(String name) {

        return restTemplate.getForObject("http://SERVICE-HI/hi?name="+name,String.class);

    }

//http://localhost:8762/actuator/hystrix.stream

}

  • @EnableHystrix注解开启Hystrix

  • 在方法上加上@HystrixCommand注解 绑定熔断处理

  • 加上@EnableHystrix注解开启断路器，这个是必须的，并且需要在程序中声明断路点HystrixCommand；加上@EnableHystrixDashboard注解，开启HystrixDashboard

3. yml配置

server:

  port: 8761

eureka:

  instance:

    hostname: localhost

  client:

    registerWithEureka: false

    fetchRegistry: false

    serviceUrl:

      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

spring:

  application:

    name: eurka-server

4. bootstrap.properties

##配置中心客户端

spring.application.name=config-client

spring.cloud.config.label=master

spring.cloud.config.profile=dev

spring.cloud.config.uri= http://localhost:8888/

server.port=8881

##链路追踪客户端

server.port=8988

spring.zipkin.base-url=http://localhost:9411

spring.application.name=service-hi

4. Feign消费者服务中心

1. pom依赖

<?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">

    <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.RELEASE</spring-cloud.version>

    </properties>

    <dependencies>

        <!-- 1: 发现中心依赖 -->

        <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-web</artifactId>

        </dependency>

        <!-- 2: feign代理 -->

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-openfeign</artifactId>

        </dependency>

       <!-- 3: hystrix熔断 -->

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>

         </dependency>

        <!-- 4:配置中心客户端 -->

       	<dependency>

			<groupId>org.springframework.cloud</groupId>

			<artifactId>spring-cloud-starter-config</artifactId>

		</dependency>

       <!-- 5：链路追踪客户端 -->

		<dependency>

			<groupId>org.springframework.cloud</groupId>

			<artifactId>spring-cloud-starter-zipkin</artifactId>

		</dependency>

       <!-- 6:-hystrix-dashboard客户端 -->

       <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>

       </dependency>

       <!-- 7:监控中心客户端 -->

        <dependency>

            <groupId>de.codecentric</groupId>

            <artifactId>spring-boot-admin-starter-client</artifactId>

            <version>2.1.0</version>

        </dependency>

    </dependencies>

    <build>

        <plugins>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

        </plugins>

    </build>

</project>

2. Application.java

@SpringBootApplication

@EnableEurekaClient

@EnableDiscoveryClient

@EnableFeignClients

@RestController

@EnableHystrix

@EnableEurekaServer

public class ServiceFeignApplication {

    public static void main(String[] args) {

        SpringApplication.run( ServiceFeignApplication.class, args );

    }

        //编译器报错，无视。 因为这个Bean是在程序启动的时候注入的，编译器感知不到，所以报错。

    @Autowired

    SchedualServiceHi schedualServiceHi;

    @GetMapping(value = "/hi")

    public String sayHi(@RequestParam String name) {

        return schedualServiceHi.sayHiFromClientOne( name );

    }

}

@FeignClient(value = "service-hi")

public interface SchedualServiceHi {

    @RequestMapping(value = "/hi",method = RequestMethod.GET)

    String sayHiFromClientOne(@RequestParam(value = "name") String name);

}

@Component

public class SchedualServiceHiHystric implements SchedualServiceHi {

    @Override

    public String sayHiFromClientOne(String name) {

        return "sorry "+name;

    }

}

  • @ FeignClient（“服务名”），来指定调用哪个服务

  • @EnableHystrix注解开启Hystrix

  • @EnableEurekaServer

3. yml配置

eureka:

  client:

    serviceUrl:

      defaultZone: http://localhost:8761/eureka/

server:

  port: 8765

spring:

  application:

    name: service-feign

  boot:

    admin:

      client:

        url: http://localhost:8769

management:

  endpoints:

    web:

      exposure:

        include: '*'

  endpoint:

    health:

      show-details: ALWAYS
  • feign是自带断路器的，在D版本的Spring Cloud之后，它没有默认打开。需要在配置文件中配置打开它

feign.hystrix.enabled=true

4.配置中心客户端

bootstrap.properties

spring.application.name=config-client

spring.cloud.config.label=master

spring.cloud.config.profile=dev

#spring.cloud.config.uri= http://localhost:8888/

eureka.client.serviceUrl.defaultZone=http://localhost:8889/eureka/

spring.cloud.config.discovery.enabled=true

spring.cloud.config.discovery.serviceId=config-server

server.port=8881

5. 配置中心 - configserver

1. pom依赖

<?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.forezp</groupId>

    <artifactId>sc-f-chapter1</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <packaging>pom</packaging>

    <name>sc-f-chapter1</name>

    <description>Demo project for Spring Boot</description>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>2.0.3.RELEASE</version>

        <relativePath/>

    </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.RELEASE</spring-cloud.version>

    </properties>

	<dependencies>

		<dependency>

			<groupId>org.springframework.boot</groupId>

			<artifactId>spring-boot-starter-web</artifactId>

		</dependency>

		<dependency>

			<groupId>org.springframework.cloud</groupId>

			<artifactId>spring-cloud-config-server</artifactId>

		</dependency>

	</dependencies>

    <build>

        <plugins>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

        </plugins>

    </build>

</project>

2. Application.java

@SpringBootApplication

@EnableConfigServer

public class ConfigServerApplication {

	public static void main(String[] args) {

		SpringApplication.run(ConfigServerApplication.class, args);

	}

}
  • @EnableConfigServer注解开启配置服务器的功能

3. 配置

spring.application.name=config-server

server.port=8888

spring.cloud.config.server.git.uri=https://github.com/forezp/SpringcloudConfig/

spring.cloud.config.server.git.searchPaths=respo

spring.cloud.config.label=master

spring.cloud.config.server.git.username=

spring.cloud.config.server.git.password=

spring.application.name=config-server

server.port=8888

spring.cloud.config.server.git.uri=https://github.com/forezp/SpringcloudConfig/

spring.cloud.config.server.git.searchPaths=respo

spring.cloud.config.label=master

spring.cloud.config.server.git.username= your username

spring.cloud.config.server.git.password= your password
  • spring.cloud.config.server.git.uri：配置git仓库地
  • spring.cloud.config.server.git.searchPaths：配置仓库路径
  • spring.cloud.config.label：配置仓库的分支
  • spring.cloud.config.server.git.username：访问git仓库的用户名
  • spring.cloud.config.server.git.password：访问git仓库的用户密码

http请求地址和资源文件映射如下:

  • /{application}/{profile}[/{label}]
  • /{application}-{profile}.yml
  • /{label}/{application}-{profile}.yml
  • /{application}-{profile}.properties
  • /{label}/{application}-{profile}.properties

6. 网关中心 - zull

1. pom依赖

<?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.forezp</groupId>

    <artifactId>sc-f-chapter1</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <packaging>pom</packaging>

    <name>sc-f-chapter1</name>

    <description>Demo project for Spring Boot</description>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>2.0.3.RELEASE</version>

        <relativePath/>

    </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.RELEASE</spring-cloud.version>

    </properties>

    <dependencies>

        <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-web</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-netflix-zuul</artifactId>

        </dependency>

    </dependencies>

    <build>

        <plugins>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

        </plugins>

    </build>

</project>

2. Application.java

@SpringBootApplication

@EnableZuulProxy

@EnableEurekaClient

@EnableDiscoveryClient

public class ServiceZuulApplication {

    public static void main(String[] args) {

        SpringApplication.run( ServiceZuulApplication.class, args );

    }

}
  • @EnableZuulProxy，开启zuul的功能

网关过滤

@Component

public class MyFilter extends ZuulFilter {

    private static Logger log = LoggerFactory.getLogger(MyFilter.class);

    @Override

    public String filterType() {

        return "pre";

    }

    @Override

    public int filterOrder() {

        return 0;

    }

    @Override

    public boolean shouldFilter() {

        return true;

    }

    @Override

    public Object run() {

        RequestContext ctx = RequestContext.getCurrentContext();

        HttpServletRequest request = ctx.getRequest();

        log.info(String.format("%s >>> %s", request.getMethod(), request.getRequestURL().toString()));

        Object accessToken = request.getParameter("token");

        if(accessToken == null) {

            log.warn("token is empty");

            ctx.setSendZuulResponse(false);

            ctx.setResponseStatusCode(401);

            try {

                ctx.getResponse().getWriter().write("token is empty");

            }catch (Exception e){}

            return null;

        }

        log.info("ok");

        return null;

    }

}
  • filterType：返回一个字符串代表过滤器的类型，在zuul中定义了四种不同生命周期的过滤器类型，具体如下：

    • pre：路由之前
    • routing：路由之时
    • post： 路由之后
    • error：发送错误调
    • filterOrder：过滤的顺序
    • shouldFilter：这里可以写逻辑判断，是否要过滤，本文true,永远过滤。
    • run：过滤器的具体逻辑。可用很复杂，包括查sql，nosql去判断该请求到底有没有权限访问

3. yml配置

eureka:

  client:

    serviceUrl:

      defaultZone: http://localhost:8761/eureka/

server:

  port: 8769

spring:

  application:

    name: service-zuul

zuul:

  routes:

    api-a:

      path: /api-a/**

      serviceId: service-ribbon

    api-b:

      path: /api-b/**

      serviceId: service-feign

7. 链路中心 -Cloud Sleuth

服务追踪组件zipkin，Spring Cloud Sleuth集成了zipkin组件 ,在spring Cloud为F版本的时候，已经不需要自己构建Zipkin Server了，只需要下载jar即可，下载地址：

https://dl.bintray.com/openzipkin/maven/io/zipkin/java/zipkin-server/

java -jar zipkin-server-2.10.1-exec.jar //http://localhost:9494

客户端

1. pom依赖

<?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.forezp</groupId>

    <artifactId>sc-f-chapter1</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <packaging>pom</packaging>

    <name>sc-f-chapter1</name>

    <description>Demo project for Spring Boot</description>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>2.0.3.RELEASE</version>

        <relativePath/>

    </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.RELEASE</spring-cloud.version>

    </properties>

	<dependencies>

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-sleuth</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-sleuth-zipkin</artifactId>

        </dependency>

    </dependencies>

    <build>

        <plugins>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

        </plugins>

    </build>

</project>

2. Application.java

@SpringBootApplication

@EnableEurekaClient

@EnableDiscoveryClient

@RestController

@RefreshScope

public class ConfigClientApplication {

	/**

	 * http://localhost:8881/actuator/bus-refresh

	 */

	public static void main(String[] args) {

		SpringApplication.run(ConfigClientApplication.class, args);

	}

	@Value("${foo}")

	String foo;

	@RequestMapping(value = "/hi")

	public String hi(){

		return foo;

	}

}
  • @EnableZuulProxy，开启zuul的功能

3. 配置

server.port=8988

spring.zipkin.base-url=http://localhost:9411

spring.application.name=service-hi

spring.zipkin.sender.type: web

#设置采样率默认为 0.1 注意之前的版本是percentage 新版本中更换为 probability

spring.sleuth.sampler.probability: 1

8. 断路器聚合监控(Hystrix Turbine)

利用Hystrix Dashboard去监控断路器的Hystrix command。当我们有很多个服务的时候，这就需要聚合所以服务的Hystrix Dashboard的数据了。这就需要用到Spring Cloud的另一个组件了，即Hystrix Turbine

1. pom依赖

<dependencies>

        <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-web</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-actuator</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-netflix-turbine</artifactId>

        </dependency>

    </dependencies>

2. Application.java

@SpringBootApplication

@EnableEurekaClient

@EnableDiscoveryClient

@RestController

@EnableHystrix

@EnableHystrixDashboard

@EnableCircuitBreaker

@EnableTurbine

public class ServiceTurbineApplication {

    /**

     * http://localhost:8764/turbine.stream

     */

    public static void main(String[] args) {

        SpringApplication.run( ServiceTurbineApplication.class, args );

    }

}
  • @EnableTurbine注解包含了@EnableDiscoveryClient注解，即开启了注册服务

3. 配置

server:

  port: 8764

spring:

  application:

    name: service-turbine

eureka:

  client:

    serviceUrl:

      defaultZone: http://localhost:8761/eureka/

management:

  endpoints:

    web:

      exposure:

        include: "*"

      cors:

        allowed-origins: "*"

        allowed-methods: "*"

turbine:

  app-config: service-hi,service-lucy

  aggregator:

    clusterConfig: default

  clusterNameExpression: new String("default")

  combine-host: true

  instanceUrlSuffix:

    default: actuator/hystrix.stream

9. Spring Cloud Gateway网关

Spring Cloud Gateway是Spring Cloud官方推出的第二代网关框架，取代Zuul网关。网关作为流量的，在微服务系统中有着非常作用，网关常见的功能有路由转发、权限校验、限流控制等作用

1. pom依赖

    <dependencies>

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-gateway</artifactId>

        </dependency>

    </dependencies>

2. Application.java

@SpringBootApplication

@EnableEurekaClient

@EnableDiscoveryClient

@RestController

@RefreshScope

public class ConfigClientApplication {

	/**

	 * http://localhost:8881/actuator/bus-refresh

	 */

	public static void main(String[] args) {

		SpringApplication.run(ConfigClientApplication.class, args);

	}

	@Value("${foo}")

	String foo;

	@RequestMapping(value = "/hi")

	public String hi(){

		return foo;

	}

}
  • @EnableZuulProxy，开启zuul的功能

3. 配置

server:

  port: 8081

spring:

  application:

    name: sc-gateway-service

  cloud:

    gateway:

      discovery:

        locator:

          enabled: true

          lowerCaseServiceId: true

eureka:

  client:

    service-url:

      defaultZone: http://localhost:8761/eureka/

10. 线路中心 - Bus

1. pom依赖

<?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.forezp</groupId>

    <artifactId>sc-f-chapter1</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <packaging>pom</packaging>

    <name>sc-f-chapter1</name>

    <description>Demo project for Spring Boot</description>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>2.0.3.RELEASE</version>

        <relativePath/>

    </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.RELEASE</spring-cloud.version>

    </properties>

<dependencies>

		<dependency>

			<groupId>org.springframework.cloud</groupId>

			<artifactId>spring-cloud-starter-config</artifactId>

		</dependency>

		<dependency>

			<groupId>org.springframework.boot</groupId>

			<artifactId>spring-boot-starter-web</artifactId>

		</dependency>

		<dependency>

			<groupId>org.springframework.cloud</groupId>

			<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>

		</dependency>

		<dependency>

			<groupId>org.springframework.cloud</groupId>

			<artifactId>spring-cloud-starter-bus-amqp</artifactId>

		</dependency>

		<dependency>

			<groupId>org.springframework.boot</groupId>

			<artifactId>spring-boot-starter-actuator</artifactId>

		</dependency>

    </dependencies>

    <build>

        <plugins>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

        </plugins>

    </build>

</project>

2. Application.java

@SpringBootApplication

@EnableEurekaClient

@EnableDiscoveryClient

@RestController

@RefreshScope

public class ConfigClientApplication {

	/**

	 * http://localhost:8881/actuator/bus-refresh

	 */

	public static void main(String[] args) {

		SpringApplication.run(ConfigClientApplication.class, args);

	}

	@Value("${foo}")

	String foo;

	@RequestMapping(value = "/hi")

	public String hi(){

		return foo;

	}

}
  • @EnableZuulProxy，开启zuul的功能

3. 配置

spring.rabbitmq.host=localhost

spring.rabbitmq.port=5672

spring.rabbitmq.username=guest

spring.rabbitmq.password=guest

spring.cloud.bus.enabled=true

spring.cloud.bus.trace.enabled=true

management.endpoints.web.exposure.include=bus-refresh

11.监控中心 -adminserver

1. pom依赖

<?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.forezp</groupId>

    <artifactId>sc-f-chapter1</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <packaging>pom</packaging>

    <name>sc-f-chapter1</name>

    <description>Demo project for Spring Boot</description>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>2.0.3.RELEASE</version>

        <relativePath/>

    </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.RELEASE</spring-cloud.version>

    </properties>

	<dependencies>

		<dependency>

			<groupId>org.springframework.boot</groupId>

			<artifactId>spring-boot-starter-web</artifactId>

		</dependency>

		<dependency>

			<groupId>org.springframework.cloud</groupId>

			<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>

		</dependency>

        <dependency>

            <groupId>de.codecentric</groupId>

            <artifactId>spring-boot-admin-starter-server</artifactId>

            <version>2.1.0</version>

        </dependency>

    </dependencies>

    <build>

        <plugins>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

        </plugins>

    </build>

</project>

2. Application.java

@SpringBootApplication

@EnableAdminServer

public class ConfigClientApplication {

	/**

	 * http://localhost:8881/actuator/bus-refresh

	 */

	public static void main(String[] args) {

		SpringApplication.run(ConfigClientApplication.class, args);

	}

}
  • @EnableAdminServer注解，开启AdminServer的功能

3. 配置

spring:

  application:

    name: admin-server

server:

  port: 8769

4.客户端

依赖

       <dependency>

            <groupId>de.codecentric</groupId>

            <artifactId>spring-boot-admin-starter-client</artifactId>

            <version>2.1.0</version>

        </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-web</artifactId>

        </dependency>

配置

spring:

  application:

    name: admin-client

  boot:

    admin:

      client:

        url: http://localhost:8769

server:

  port: 8768

management:

  endpoints:

    web:

      exposure:

        include: '*'

  endpoint:

    health:

      show-details: ALWAYS

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