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 "> <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: ${eureka.instance.hostname}:${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 "> <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: :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 "> <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