Spring cloud 基础框架集成

1. 注册中心 -eurekar

1. pom依赖

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  6.     <groupId>com.forezp</groupId>
  7.     <artifactId>sc-f-chapter1</artifactId>
  8.     <version>0.0.1-SNAPSHOT</version>
  9.     <packaging>pom</packaging>
  11.     <name>sc-f-chapter1</name>
  12.     <description>Demo project for Spring Boot</description>
  14.     <parent>
  15.         <groupId>org.springframework.boot</groupId>
  16.         <artifactId>spring-boot-starter-parent</artifactId>
  17.         <version>2.0.3.RELEASE</version>
  18.         <relativePath/>
  19.     </parent>
  21.     <modules>
  22.         <module>eureka-server</module>
  23.         <module>service-hi</module>
  24.     </modules>
  26.     <properties>
  27.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  28.         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  29.         <java.version>1.8</java.version>
  30.         <spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
  31.     </properties>
  33.     <dependencies>
  34.         <dependency>
  35.             <groupId>org.springframework.boot</groupId>
  36.             <artifactId>spring-boot-starter-test</artifactId>
  37.             <scope>test</scope>
  38.         </dependency>
  39.         <dependency>
  40.             <groupId>org.springframework.cloud</groupId>
  41.             <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
  42.         </dependency>
  44.     </dependencies>
  46.     <dependencyManagement>
  47.         <dependencies>
  48.             <dependency>
  49.                 <groupId>org.springframework.cloud</groupId>
  50.                 <artifactId>spring-cloud-dependencies</artifactId>
  51.                 <version>${spring-cloud.version}</version>
  52.                 <type>pom</type>
  53.                 <scope>import</scope>
  54.             </dependency>
  55.         </dependencies>
  56.     </dependencyManagement>
  58.     <build>
  59.         <plugins>
  60.             <plugin>
  61.                 <groupId>org.springframework.boot</groupId>
  62.                 <artifactId>spring-boot-maven-plugin</artifactId>
  63.             </plugin>
  64.         </plugins>
  65.     </build>
  67. </project>

2. Application.java

  1. @SpringBootApplication
  2. @EnableEurekaServer
  3. public class EurekaServerApplication {
  5.     public static void main(String[] args) {
  6.         SpringApplication.run( EurekaServerApplication.class, args );
  7.     }
  8. }

3. yml配置

  1. server:
  2.   port: 8761
  4. eureka:
  5.   instance:
  6.     hostname: localhost
  7.   client:
  8.     registerWithEureka: false
  9.     fetchRegistry: false
  10.     serviceUrl:
  11.       defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
  13. spring:
  14.   application:
  15.     name: eurka-server

2. 服务提供者 -server

1. pom依赖

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  6.     <groupId>com.forezp</groupId>
  7.     <artifactId>sc-f-chapter1</artifactId>
  8.     <version>0.0.1-SNAPSHOT</version>
  9.     <packaging>pom</packaging>
  11.     <name>sc-f-chapter1</name>
  12.     <description>Demo project for Spring Boot</description>
  14.     <parent>
  15.         <groupId>org.springframework.boot</groupId>
  16.         <artifactId>spring-boot-starter-parent</artifactId>
  17.         <version>2.0.3.RELEASE</version>
  18.         <relativePath/>
  19.     </parent>
  21.     <properties>
  22.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  23.         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  24.         <java.version>1.8</java.version>
  25.         <spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
  26.     </properties>
  27.     <dependencies>
  28.         <dependency>
  29.             <groupId>org.springframework.cloud</groupId>
  30.             <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
  31.         </dependency>
  32.         <dependency>
  33.             <groupId>org.springframework.boot</groupId>
  34.             <artifactId>spring-boot-starter-web</artifactId>
  35.         </dependency>
  36.     </dependencies>
  37.     <build>
  38.         <plugins>
  39.             <plugin>
  40.                 <groupId>org.springframework.boot</groupId>
  41.                 <artifactId>spring-boot-maven-plugin</artifactId>
  42.             </plugin>
  43.         </plugins>
  44.     </build>
  45. </project>

2. Application.java

  1. @SpringBootApplication
  2. @EnableEurekaClient
  3. @RestController
  4. public class ServiceHiApplication {
  6.     public static void main(String[] args) {
  7.         SpringApplication.run( ServiceHiApplication.class, args );
  8.     }
  10.     @Value("${server.port}")
  11.     String port;
  13.     @RequestMapping("/hi")
  14.     public String home(@RequestParam(value = "name", defaultValue = "forezp") String name) {
  15.         return "hi " + name + " ,i am from port:" + port;
  16.     }
  18. }

3. yml配置

  1. server:
  2.   port: 8762
  4. spring:
  5.   application:
  6.     name: service-hi
  8. eureka:
  9.   client:
  10.     serviceUrl:
  11.       defaultZone: http://localhost:8761/eureka/

3. Ribbon消费者服务中心

1. pom依赖

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <properties>
  5.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  6.         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  7.         <java.version>1.8</java.version>
  8.         <spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
  9.     </properties>
  11.    <dependencies>
  12.        <!-- 1: 发现中心 -->
  13.         <dependency>
  14.             <groupId>org.springframework.cloud</groupId>
  15.             <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
  16.         </dependency>
  17.         <dependency>
  18.             <groupId>org.springframework.boot</groupId>
  19.             <artifactId>spring-boot-starter-web</artifactId>
  20.         </dependency>
  22.        <!-- 2: ribbon代理 -->
  23.         <dependency>
  24.             <groupId>org.springframework.cloud</groupId>
  25.             <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
  26.         </dependency>
  28.         <!-- 3: hystrix熔断 -->
  29.         <dependency>
  30.             <groupId>org.springframework.cloud</groupId>
  31.             <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
  32.          </dependency>
  34.         <!-- 4:配置中心客户端 -->
  35.        	<dependency>
  36. 			<groupId>org.springframework.cloud</groupId>
  37. 			<artifactId>spring-cloud-starter-config</artifactId>
  38. 		</dependency>
  39.        <!-- 5：链路追踪客户端 -->
  40. 		<dependency>
  41. 			<groupId>org.springframework.cloud</groupId>
  42. 			<artifactId>spring-cloud-starter-zipkin</artifactId>
  43. 		</dependency>
  44.        <!-- 6:-hystrix-dashboard客户端 -->
  45.        <dependency>
  46.             <groupId>org.springframework.cloud</groupId>
  47.             <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
  48.        </dependency>
  50.        <!-- 7:监控中心客户端 -->
  51.         <dependency>
  52.             <groupId>de.codecentric</groupId>
  53.             <artifactId>spring-boot-admin-starter-client</artifactId>
  54.             <version>2.1.0</version>
  55.         </dependency>
  57.     </dependencies>
  58.     <build>
  59.         <plugins>
  60.             <plugin>
  61.                 <groupId>org.springframework.boot</groupId>
  62.                 <artifactId>spring-boot-maven-plugin</artifactId>
  63.             </plugin>
  64.         </plugins>
  65.     </build>
  66. </project>

2. Application.java

  1. @SpringBootApplication
  2. @EnableEurekaClient
  3. @EnableDiscoveryClient
  4. @RestController
  5. @EnableHystrix
  6. @EnableHystrixDashboard
  7. public class ServiceRibbonApplication {
  9.     public static void main(String[] args) {
  10.         SpringApplication.run( ServiceRibbonApplication.class, args );
  11.     }
  13.     @Bean
  14.     @LoadBalanced
  15.     RestTemplate restTemplate() {
  16.         return new RestTemplate();
  17.     }
  19.     @Autowired
  20.     HelloService helloService;
  22.     @GetMapping(value = "/hi")
  23.     public String hi(@RequestParam String name) {
  24.         return helloService.hiService( name );
  25.     }
  26. }
  28. @Service
  29. public class HelloService {
  31.     @Autowired
  32.     RestTemplate restTemplate;
  34.     public String hiService(String name) {
  35.         return restTemplate.getForObject("http://SERVICE-HI/hi?name="+name,String.class);
  36.     }
  38.     @HystrixCommand(fallbackMethod = "hiError")
  39.     public String hiService(String name) {
  40.         return restTemplate.getForObject("http://SERVICE-HI/hi?name="+name,String.class);
  41.     }
  42. //http://localhost:8762/actuator/hystrix.stream
  43. }

  • @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

  1. server:
  2.   port: 8761
  4. eureka:
  5.   instance:
  6.     hostname: localhost
  7.   client:
  8.     registerWithEureka: false
  9.     fetchRegistry: false
  10.     serviceUrl:
  11.       defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
  13. spring:
  14.   application:
  15.     name: eurka-server

4. bootstrap.properties

  1. ##配置中心客户端
  2. spring.application.name=config-client
  3. spring.cloud.config.label=master
  4. spring.cloud.config.profile=dev
  5. spring.cloud.config.uri= http://localhost:8888/
  6. server.port=8881
  7. ##链路追踪客户端
  8. server.port=8988
  9. spring.zipkin.base-url=http://localhost:9411
  10. spring.application.name=service-hi

4. Feign消费者服务中心

1. pom依赖

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <properties>
  5.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  6.         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  7.         <java.version>1.8</java.version>
  8.         <spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
  9.     </properties>
  11.     <dependencies>
  12.         <!-- 1: 发现中心依赖 -->
  13.         <dependency>
  14.             <groupId>org.springframework.cloud</groupId>
  15.             <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
  16.         </dependency>
  17.         <dependency>
  18.             <groupId>org.springframework.boot</groupId>
  19.             <artifactId>spring-boot-starter-web</artifactId>
  20.         </dependency>
  22.         <!-- 2: feign代理 -->
  23.         <dependency>
  24.             <groupId>org.springframework.cloud</groupId>
  25.             <artifactId>spring-cloud-starter-openfeign</artifactId>
  26.         </dependency>
  28.        <!-- 3: hystrix熔断 -->
  29.         <dependency>
  30.             <groupId>org.springframework.cloud</groupId>
  31.             <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
  32.          </dependency>
  34.         <!-- 4:配置中心客户端 -->
  35.        	<dependency>
  36. 			<groupId>org.springframework.cloud</groupId>
  37. 			<artifactId>spring-cloud-starter-config</artifactId>
  38. 		</dependency>
  39.        <!-- 5：链路追踪客户端 -->
  40. 		<dependency>
  41. 			<groupId>org.springframework.cloud</groupId>
  42. 			<artifactId>spring-cloud-starter-zipkin</artifactId>
  43. 		</dependency>
  44.        <!-- 6:-hystrix-dashboard客户端 -->
  45.        <dependency>
  46.             <groupId>org.springframework.cloud</groupId>
  47.             <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
  48.        </dependency>
  50.        <!-- 7:监控中心客户端 -->
  51.         <dependency>
  52.             <groupId>de.codecentric</groupId>
  53.             <artifactId>spring-boot-admin-starter-client</artifactId>
  54.             <version>2.1.0</version>
  55.         </dependency>
  57.     </dependencies>
  59.     <build>
  60.         <plugins>
  61.             <plugin>
  62.                 <groupId>org.springframework.boot</groupId>
  63.                 <artifactId>spring-boot-maven-plugin</artifactId>
  64.             </plugin>
  65.         </plugins>
  66.     </build>
  67. </project>

2. Application.java

  1. @SpringBootApplication
  2. @EnableEurekaClient
  3. @EnableDiscoveryClient
  4. @EnableFeignClients
  5. @RestController
  6. @EnableHystrix
  7. @EnableEurekaServer
  8. public class ServiceFeignApplication {
  10.     public static void main(String[] args) {
  11.         SpringApplication.run( ServiceFeignApplication.class, args );
  12.     }
  13.         //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。
  14.     @Autowired
  15.     SchedualServiceHi schedualServiceHi;
  17.     @GetMapping(value = "/hi")
  18.     public String sayHi(@RequestParam String name) {
  19.         return schedualServiceHi.sayHiFromClientOne( name );
  20.     }
  22. }
  24. @FeignClient(value = "service-hi")
  25. public interface SchedualServiceHi {
  26.     @RequestMapping(value = "/hi",method = RequestMethod.GET)
  27.     String sayHiFromClientOne(@RequestParam(value = "name") String name);
  28. }
  30. @Component
  31. public class SchedualServiceHiHystric implements SchedualServiceHi {
  32.     @Override
  33.     public String sayHiFromClientOne(String name) {
  34.         return "sorry "+name;
  35.     }
  36. }

  • @ FeignClient（“服务名”），来指定调用哪个服务

  • @EnableHystrix注解开启Hystrix

  • @EnableEurekaServer

3. yml配置

  1. eureka:
  2.   client:
  3.     serviceUrl:
  4.       defaultZone: http://localhost:8761/eureka/
  5. server:
  6.   port: 8765
  7. spring:
  8.   application:
  9.     name: service-feign
  10.   boot:
  11.     admin:
  12.       client:
  13.         url: http://localhost:8769
  14. management:
  15.   endpoints:
  16.     web:
  17.       exposure:
  18.         include: '*'
  19.   endpoint:
  20.     health:
  21.       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

  1. spring.application.name=config-client
  2. spring.cloud.config.label=master
  3. spring.cloud.config.profile=dev
  4. #spring.cloud.config.uri= http://localhost:8888/
  6. eureka.client.serviceUrl.defaultZone=http://localhost:8889/eureka/
  7. spring.cloud.config.discovery.enabled=true
  8. spring.cloud.config.discovery.serviceId=config-server
  9. server.port=8881

5. 配置中心 - configserver

1. pom依赖

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  6.     <groupId>com.forezp</groupId>
  7.     <artifactId>sc-f-chapter1</artifactId>
  8.     <version>0.0.1-SNAPSHOT</version>
  9.     <packaging>pom</packaging>
  11.     <name>sc-f-chapter1</name>
  12.     <description>Demo project for Spring Boot</description>
  14.     <parent>
  15.         <groupId>org.springframework.boot</groupId>
  16.         <artifactId>spring-boot-starter-parent</artifactId>
  17.         <version>2.0.3.RELEASE</version>
  18.         <relativePath/>
  19.     </parent>
  21.     <properties>
  22.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  23.         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  24.         <java.version>1.8</java.version>
  25.         <spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
  26.     </properties>
  27. 	<dependencies>
  28. 		<dependency>
  29. 			<groupId>org.springframework.boot</groupId>
  30. 			<artifactId>spring-boot-starter-web</artifactId>
  31. 		</dependency>
  32. 		<dependency>
  33. 			<groupId>org.springframework.cloud</groupId>
  34. 			<artifactId>spring-cloud-config-server</artifactId>
  35. 		</dependency>
  36. 	</dependencies>
  38.     <build>
  39.         <plugins>
  40.             <plugin>
  41.                 <groupId>org.springframework.boot</groupId>
  42.                 <artifactId>spring-boot-maven-plugin</artifactId>
  43.             </plugin>
  44.         </plugins>
  45.     </build>
  46. </project>

2. Application.java

  1. @SpringBootApplication
  2. @EnableConfigServer
  3. public class ConfigServerApplication {
  5. 	public static void main(String[] args) {
  6. 		SpringApplication.run(ConfigServerApplication.class, args);
  7. 	}
  8. }
  • @EnableConfigServer注解开启配置服务器的功能

3. 配置

  1. spring.application.name=config-server
  2. server.port=8888
  4. spring.cloud.config.server.git.uri=https://github.com/forezp/SpringcloudConfig/
  5. spring.cloud.config.server.git.searchPaths=respo
  6. spring.cloud.config.label=master
  7. spring.cloud.config.server.git.username=
  8. spring.cloud.config.server.git.password=
  10. spring.application.name=config-server
  11. server.port=8888
  13. spring.cloud.config.server.git.uri=https://github.com/forezp/SpringcloudConfig/
  14. spring.cloud.config.server.git.searchPaths=respo
  15. spring.cloud.config.label=master
  16. spring.cloud.config.server.git.username= your username
  17. 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

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  6.     <groupId>com.forezp</groupId>
  7.     <artifactId>sc-f-chapter1</artifactId>
  8.     <version>0.0.1-SNAPSHOT</version>
  9.     <packaging>pom</packaging>
  11.     <name>sc-f-chapter1</name>
  12.     <description>Demo project for Spring Boot</description>
  14.     <parent>
  15.         <groupId>org.springframework.boot</groupId>
  16.         <artifactId>spring-boot-starter-parent</artifactId>
  17.         <version>2.0.3.RELEASE</version>
  18.         <relativePath/>
  19.     </parent>
  21.     <properties>
  22.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  23.         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  24.         <java.version>1.8</java.version>
  25.         <spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
  26.     </properties>
  27.     <dependencies>
  28.         <dependency>
  29.             <groupId>org.springframework.cloud</groupId>
  30.             <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
  31.         </dependency>
  32.         <dependency>
  33.             <groupId>org.springframework.boot</groupId>
  34.             <artifactId>spring-boot-starter-web</artifactId>
  35.         </dependency>
  36.         <dependency>
  37.             <groupId>org.springframework.cloud</groupId>
  38.             <artifactId>spring-cloud-starter-netflix-zuul</artifactId>
  39.         </dependency>
  40.     </dependencies>
  42.     <build>
  43.         <plugins>
  44.             <plugin>
  45.                 <groupId>org.springframework.boot</groupId>
  46.                 <artifactId>spring-boot-maven-plugin</artifactId>
  47.             </plugin>
  48.         </plugins>
  49.     </build>
  50. </project>

2. Application.java

  1. @SpringBootApplication
  2. @EnableZuulProxy
  3. @EnableEurekaClient
  4. @EnableDiscoveryClient
  5. public class ServiceZuulApplication {
  7.     public static void main(String[] args) {
  8.         SpringApplication.run( ServiceZuulApplication.class, args );
  9.     }
  10. }
  • @EnableZuulProxy，开启zuul的功能

网关过滤

  1. @Component
  2. public class MyFilter extends ZuulFilter {
  4.     private static Logger log = LoggerFactory.getLogger(MyFilter.class);
  5.     @Override
  6.     public String filterType() {
  7.         return "pre";
  8.     }
  10.     @Override
  11.     public int filterOrder() {
  12.         return 0;
  13.     }
  15.     @Override
  16.     public boolean shouldFilter() {
  17.         return true;
  18.     }
  20.     @Override
  21.     public Object run() {
  22.         RequestContext ctx = RequestContext.getCurrentContext();
  23.         HttpServletRequest request = ctx.getRequest();
  24.         log.info(String.format("%s >>> %s", request.getMethod(), request.getRequestURL().toString()));
  25.         Object accessToken = request.getParameter("token");
  26.         if(accessToken == null) {
  27.             log.warn("token is empty");
  28.             ctx.setSendZuulResponse(false);
  29.             ctx.setResponseStatusCode(401);
  30.             try {
  31.                 ctx.getResponse().getWriter().write("token is empty");
  32.             }catch (Exception e){}
  34.             return null;
  35.         }
  36.         log.info("ok");
  37.         return null;
  38.     }
  39. }
  • 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

  1. eureka:
  2.   client:
  3.     serviceUrl:
  4.       defaultZone: http://localhost:8761/eureka/
  5. server:
  6.   port: 8769
  7. spring:
  8.   application:
  9.     name: service-zuul
  10. zuul:
  11.   routes:
  12.     api-a:
  13.       path: /api-a/**
  14.       serviceId: service-ribbon
  15.     api-b:
  16.       path: /api-b/**
  17.       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

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  6.     <groupId>com.forezp</groupId>
  7.     <artifactId>sc-f-chapter1</artifactId>
  8.     <version>0.0.1-SNAPSHOT</version>
  9.     <packaging>pom</packaging>
  11.     <name>sc-f-chapter1</name>
  12.     <description>Demo project for Spring Boot</description>
  14.     <parent>
  15.         <groupId>org.springframework.boot</groupId>
  16.         <artifactId>spring-boot-starter-parent</artifactId>
  17.         <version>2.0.3.RELEASE</version>
  18.         <relativePath/>
  19.     </parent>
  21.     <properties>
  22.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  23.         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  24.         <java.version>1.8</java.version>
  25.         <spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
  26.     </properties>
  27. 	<dependencies>
  28.         <dependency>
  29.             <groupId>org.springframework.cloud</groupId>
  30.             <artifactId>spring-cloud-starter-sleuth</artifactId>
  31.         </dependency>
  33.         <dependency>
  34.             <groupId>org.springframework.cloud</groupId>
  35.             <artifactId>spring-cloud-sleuth-zipkin</artifactId>
  36.         </dependency>
  38.     </dependencies>
  40.     <build>
  41.         <plugins>
  42.             <plugin>
  43.                 <groupId>org.springframework.boot</groupId>
  44.                 <artifactId>spring-boot-maven-plugin</artifactId>
  45.             </plugin>
  46.         </plugins>
  47.     </build>
  48. </project>

2. Application.java

  1. @SpringBootApplication
  2. @EnableEurekaClient
  3. @EnableDiscoveryClient
  4. @RestController
  5. @RefreshScope
  6. public class ConfigClientApplication {
  8. 	/**
  9. 	 * http://localhost:8881/actuator/bus-refresh
  10. 	 */
  12. 	public static void main(String[] args) {
  13. 		SpringApplication.run(ConfigClientApplication.class, args);
  14. 	}
  16. 	@Value("${foo}")
  17. 	String foo;
  19. 	@RequestMapping(value = "/hi")
  20. 	public String hi(){
  21. 		return foo;
  22. 	}
  23. }
  • @EnableZuulProxy，开启zuul的功能

3. 配置

  1. server.port=8988
  2. spring.zipkin.base-url=http://localhost:9411
  3. spring.application.name=service-hi
  4. spring.zipkin.sender.type: web
  5. #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
  6. 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

  1. <dependencies>
  2.         <dependency>
  3.             <groupId>org.springframework.cloud</groupId>
  4.             <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
  5.         </dependency>
  6.         <dependency>
  7.             <groupId>org.springframework.boot</groupId>
  8.             <artifactId>spring-boot-starter-web</artifactId>
  9.         </dependency>
  10.         <dependency>
  11.             <groupId>org.springframework.boot</groupId>
  12.             <artifactId>spring-boot-starter-actuator</artifactId>
  13.         </dependency>
  14.         <dependency>
  15.             <groupId>org.springframework.cloud</groupId>
  16.             <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
  17.         </dependency>
  18.         <dependency>
  19.             <groupId>org.springframework.cloud</groupId>
  20.             <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
  21.         </dependency>
  22.         <dependency>
  23.             <groupId>org.springframework.cloud</groupId>
  24.             <artifactId>spring-cloud-starter-netflix-turbine</artifactId>
  25.         </dependency>
  27.     </dependencies>

2. Application.java

  1. @SpringBootApplication
  2. @EnableEurekaClient
  3. @EnableDiscoveryClient
  4. @RestController
  5. @EnableHystrix
  6. @EnableHystrixDashboard
  7. @EnableCircuitBreaker
  8. @EnableTurbine
  9. public class ServiceTurbineApplication {
  11.     /**
  12.      * http://localhost:8764/turbine.stream
  13.      */
  15.     public static void main(String[] args) {
  16.         SpringApplication.run( ServiceTurbineApplication.class, args );
  17.     }
  18. }
  • @EnableTurbine注解包含了@EnableDiscoveryClient注解，即开启了注册服务

3. 配置

  1. server:
  2.   port: 8764
  4. spring:
  5.   application:
  6.     name: service-turbine
  8. eureka:
  9.   client:
  10.     serviceUrl:
  11.       defaultZone: http://localhost:8761/eureka/
  12. management:
  13.   endpoints:
  14.     web:
  15.       exposure:
  16.         include: "*"
  17.       cors:
  18.         allowed-origins: "*"
  19.         allowed-methods: "*"
  21. turbine:
  22.   app-config: service-hi,service-lucy
  23.   aggregator:
  24.     clusterConfig: default
  25.   clusterNameExpression: new String("default")
  26.   combine-host: true
  27.   instanceUrlSuffix:
  28.     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

  1.     <dependencies>
  2.         <dependency>
  3.             <groupId>org.springframework.cloud</groupId>
  4.             <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
  5.         </dependency>
  6.         <dependency>
  7.             <groupId>org.springframework.cloud</groupId>
  8.             <artifactId>spring-cloud-starter-gateway</artifactId>
  9.         </dependency>
  10.     </dependencies>

2. Application.java

  1. @SpringBootApplication
  2. @EnableEurekaClient
  3. @EnableDiscoveryClient
  4. @RestController
  5. @RefreshScope
  6. public class ConfigClientApplication {
  8. 	/**
  9. 	 * http://localhost:8881/actuator/bus-refresh
  10. 	 */
  12. 	public static void main(String[] args) {
  13. 		SpringApplication.run(ConfigClientApplication.class, args);
  14. 	}
  16. 	@Value("${foo}")
  17. 	String foo;
  19. 	@RequestMapping(value = "/hi")
  20. 	public String hi(){
  21. 		return foo;
  22. 	}
  23. }
  • @EnableZuulProxy，开启zuul的功能

3. 配置

  1. server:
  2.   port: 8081
  4. spring:
  5.   application:
  6.     name: sc-gateway-service
  7.   cloud:
  8.     gateway:
  9.       discovery:
  10.         locator:
  11.           enabled: true
  12.           lowerCaseServiceId: true
  14. eureka:
  15.   client:
  16.     service-url:
  17.       defaultZone: http://localhost:8761/eureka/

10. 线路中心 - Bus

1. pom依赖

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  6.     <groupId>com.forezp</groupId>
  7.     <artifactId>sc-f-chapter1</artifactId>
  8.     <version>0.0.1-SNAPSHOT</version>
  9.     <packaging>pom</packaging>
  11.     <name>sc-f-chapter1</name>
  12.     <description>Demo project for Spring Boot</description>
  14.     <parent>
  15.         <groupId>org.springframework.boot</groupId>
  16.         <artifactId>spring-boot-starter-parent</artifactId>
  17.         <version>2.0.3.RELEASE</version>
  18.         <relativePath/>
  19.     </parent>
  21.     <properties>
  22.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  23.         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  24.         <java.version>1.8</java.version>
  25.         <spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
  26.     </properties>
  27. <dependencies>
  28. 		<dependency>
  29. 			<groupId>org.springframework.cloud</groupId>
  30. 			<artifactId>spring-cloud-starter-config</artifactId>
  31. 		</dependency>
  33. 		<dependency>
  34. 			<groupId>org.springframework.boot</groupId>
  35. 			<artifactId>spring-boot-starter-web</artifactId>
  36. 		</dependency>
  38. 		<dependency>
  39. 			<groupId>org.springframework.cloud</groupId>
  40. 			<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
  41. 		</dependency>
  43. 		<dependency>
  44. 			<groupId>org.springframework.cloud</groupId>
  45. 			<artifactId>spring-cloud-starter-bus-amqp</artifactId>
  46. 		</dependency>
  48. 		<dependency>
  49. 			<groupId>org.springframework.boot</groupId>
  50. 			<artifactId>spring-boot-starter-actuator</artifactId>
  51. 		</dependency>
  52.     </dependencies>
  54.     <build>
  55.         <plugins>
  56.             <plugin>
  57.                 <groupId>org.springframework.boot</groupId>
  58.                 <artifactId>spring-boot-maven-plugin</artifactId>
  59.             </plugin>
  60.         </plugins>
  61.     </build>
  62. </project>

2. Application.java

  1. @SpringBootApplication
  2. @EnableEurekaClient
  3. @EnableDiscoveryClient
  4. @RestController
  5. @RefreshScope
  6. public class ConfigClientApplication {
  8. 	/**
  9. 	 * http://localhost:8881/actuator/bus-refresh
  10. 	 */
  12. 	public static void main(String[] args) {
  13. 		SpringApplication.run(ConfigClientApplication.class, args);
  14. 	}
  16. 	@Value("${foo}")
  17. 	String foo;
  19. 	@RequestMapping(value = "/hi")
  20. 	public String hi(){
  21. 		return foo;
  22. 	}
  23. }
  • @EnableZuulProxy，开启zuul的功能

3. 配置

  1. spring.rabbitmq.host=localhost
  2. spring.rabbitmq.port=5672
  3. spring.rabbitmq.username=guest
  4. spring.rabbitmq.password=guest
  6. spring.cloud.bus.enabled=true
  7. spring.cloud.bus.trace.enabled=true
  8. management.endpoints.web.exposure.include=bus-refresh

11.监控中心 -adminserver

1. pom依赖

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  6.     <groupId>com.forezp</groupId>
  7.     <artifactId>sc-f-chapter1</artifactId>
  8.     <version>0.0.1-SNAPSHOT</version>
  9.     <packaging>pom</packaging>
  11.     <name>sc-f-chapter1</name>
  12.     <description>Demo project for Spring Boot</description>
  14.     <parent>
  15.         <groupId>org.springframework.boot</groupId>
  16.         <artifactId>spring-boot-starter-parent</artifactId>
  17.         <version>2.0.3.RELEASE</version>
  18.         <relativePath/>
  19.     </parent>
  21.     <properties>
  22.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  23.         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  24.         <java.version>1.8</java.version>
  25.         <spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
  26.     </properties>
  27. 	<dependencies>
  28. 		<dependency>
  29. 			<groupId>org.springframework.boot</groupId>
  30. 			<artifactId>spring-boot-starter-web</artifactId>
  31. 		</dependency>
  33. 		<dependency>
  34. 			<groupId>org.springframework.cloud</groupId>
  35. 			<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
  36. 		</dependency>
  37.         <dependency>
  38.             <groupId>de.codecentric</groupId>
  39.             <artifactId>spring-boot-admin-starter-server</artifactId>
  40.             <version>2.1.0</version>
  41.         </dependency>
  43.     </dependencies>
  45.     <build>
  46.         <plugins>
  47.             <plugin>
  48.                 <groupId>org.springframework.boot</groupId>
  49.                 <artifactId>spring-boot-maven-plugin</artifactId>
  50.             </plugin>
  51.         </plugins>
  52.     </build>
  53. </project>

2. Application.java

  1. @SpringBootApplication
  2. @EnableAdminServer
  3. public class ConfigClientApplication {
  5. 	/**
  6. 	 * http://localhost:8881/actuator/bus-refresh
  7. 	 */
  9. 	public static void main(String[] args) {
  10. 		SpringApplication.run(ConfigClientApplication.class, args);
  11. 	}
  13. }
  • @EnableAdminServer注解，开启AdminServer的功能

3. 配置

  1. spring:
  2.   application:
  3.     name: admin-server
  4. server:
  5.   port: 8769

4.客户端

依赖

  1.        <dependency>
  2.             <groupId>de.codecentric</groupId>
  3.             <artifactId>spring-boot-admin-starter-client</artifactId>
  4.             <version>2.1.0</version>
  5.         </dependency>
  7.         <dependency>
  8.             <groupId>org.springframework.boot</groupId>
  9.             <artifactId>spring-boot-starter-web</artifactId>
  10.         </dependency>

配置

  1. spring:
  2.   application:
  3.     name: admin-client
  4.   boot:
  5.     admin:
  6.       client:
  7.         url: http://localhost:8769
  8. server:
  9.   port: 8768
  11. management:
  12.   endpoints:
  13.     web:
  14.       exposure:
  15.         include: '*'
  16.   endpoint:
  17.     health:
  18.       show-details: ALWAYS

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