SpringCloud Finchley+Spring Boot 2.0 集成Consul的方法示例(1.2版本)

2019-11-26 09:42:00

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概述：

Spring Boot 2.0相对于之前的版本，变化还是很大的。首先对jdk的版本要求已经不能低于1.8，其次依赖的spring的版本也是最新版本5.0，并集成了功能强大的webflux等。

SpringCloud Finchley 版本的升级也带来了全新组件：Spring Cloud Function 和 Spring Cloud Gateway ,前者致力于函数式编程模块的整合，后者则是网关netflix zuul 的替换组件。

1）需要的依赖：

<?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.iyb</groupId> <artifactId>saturn</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>sc-saturn</name> <description>sc-saturn for Spring Boot</description> <parent>  <groupId>org.springframework.boot</groupId>  <artifactId>spring-boot-starter-parent</artifactId>  <version>2.0.1.RELEASE</version> </parent> <properties>  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>  <java.version>1.8</java.version>  <mapper.version>3.4.0</mapper.version>  <pagehelper.version>4.1.6</pagehelper.version>  <fastjson.version>1.2.13</fastjson.version>  <jackson.version>2.8.5</jackson.version>  <druid.version>1.0.27</druid.version>  <mysql.version>5.1.40</mysql.version>  <commons-fileupload.version>1.3.1</commons-fileupload.version> </properties> <dependencies>  <!--starter begin-->  <!--spring cloud starter-->  <dependency>   <groupId>org.springframework.cloud</groupId>   <artifactId>spring-cloud-starter-consul-discovery</artifactId>  </dependency>  <dependency>   <groupId>org.springframework.cloud</groupId>   <artifactId>spring-cloud-starter-config</artifactId>  </dependency>  <dependency>   <groupId>org.springframework.cloud</groupId>   <artifactId>spring-cloud-starter-openfeign</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-zuul</artifactId>  </dependency>  <dependency>   <groupId>org.springframework.cloud</groupId>   <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>  </dependency>   <dependency>   <groupId>org.springframework.cloud</groupId>   <artifactId>spring-cloud-starter-sleuth</artifactId>  </dependency>  <!--tomcat starter-->  <dependency>   <groupId>org.springframework.boot</groupId>   <artifactId>spring-boot-starter-tomcat</artifactId>   <scope>provided</scope>  </dependency>  <dependency>   <groupId>org.apache.tomcat.embed</groupId>   <artifactId>tomcat-embed-jasper</artifactId>   <scope>compile</scope>  </dependency>   <!--actuator starter-->  <dependency>   <groupId>org.springframework.boot</groupId>   <artifactId>spring-boot-starter-actuator</artifactId>  </dependency>  <!--spring boot starter-->  <dependency>   <groupId>org.springframework.boot</groupId>   <artifactId>spring-boot-starter</artifactId>  </dependency>  <!--spring starter-->  <dependency>   <groupId>org.springframework.boot</groupId>   <artifactId>spring-boot-starter-jdbc</artifactId>  </dependency>  <dependency>   <groupId>org.springframework.boot</groupId>   <artifactId>spring-boot-starter-aop</artifactId>  </dependency>  <dependency>   <groupId>org.springframework.boot</groupId>   <artifactId>spring-boot-starter-data-redis</artifactId>  </dependency>  <dependency>   <groupId>org.springframework.boot</groupId>   <artifactId>spring-boot-starter-web</artifactId>  </dependency>  <!--fastjon-->  <dependency>   <groupId>com.alibaba</groupId>   <artifactId>fastjson</artifactId>   <version>${fastjson.version}</version>  </dependency>  <dependency>   <groupId>io.github.openfeign</groupId>   <artifactId>feign-gson</artifactId>   <version>9.3.1</version>  </dependency>  <!--lombok-->  <dependency>   <groupId>org.projectlombok</groupId>   <artifactId>lombok</artifactId>  </dependency>  <dependency>   <groupId>log4j</groupId>   <artifactId>log4j</artifactId>   <version>1.2.17</version>  </dependency>  <dependency>   <groupId>commons-beanutils</groupId>   <artifactId>commons-beanutils</artifactId>  </dependency>  <dependency>   <groupId>commons-collections</groupId>   <artifactId>commons-collections</artifactId>  </dependency>  <dependency>   <groupId>org.apache.commons</groupId>   <artifactId>commons-lang3</artifactId>   <version>3.4</version>  </dependency>  <dependency>   <groupId>com.netflix.feign</groupId>   <artifactId>feign-gson</artifactId>   <version>8.15.1</version>  </dependency> </dependencies> // Spring Cloud Finchley.RELEASE <dependencyManagement>  <dependencies>   <dependency>    <groupId>org.springframework.cloud</groupId>    <artifactId>spring-cloud-dependencies</artifactId>    <version>Finchley.RELEASE</version>    <type>pom</type>    <scope>import</scope>   </dependency>  </dependencies> </dependencyManagement></project>

需要注意的地方：

部分依赖做了改变：

旧版本	Finchley 版本
spring-cloud-starter-eureka-client	spring-cloud-starter-netflix-eureka-client
spring-cloud-starter-eureka-server	spring-cloud-starter-netflix-eureka-server
spring-cloud-starter-hystrix	spring-cloud-starter-netflix-hystrix
spring-cloud-starter-hystrix-dashboard	spring-cloud-starter-netflix-hystrix-dashboard
spring-cloud-starter-ribbon	spring-cloud-starter-netflix-ribbon
spring-cloud-starter-turbine	spring-cloud-starter-netflix-turbine
spring-cloud-starter-zuul	spring-cloud-starter-netflix-zuul
spring-cloud-starter-feign	spring-cloud-starter-openfeign

新版本的 SpringCloud 上面的依赖都发生了变化，依赖中都引入了 netflix，或许是为了声明吧（组件的实现底层并非spring）。

log4j依赖：

在spring cloud之前的版本中，日志只需要引入lombok即可，但是Finchley版本需要单独的引用。

<!--lombok-->  <dependency>   <groupId>org.projectlombok</groupId>   <artifactId>lombok</artifactId>  </dependency>  <dependency>   <groupId>log4j</groupId>   <artifactId>log4j</artifactId>   <version>1.2.17</version>  </dependency>

2）集成consul配置文件：

spring: application: name: sc-saturn profiles: active: dev cloud: config:#  uri: http://localhost:9999  discovery:  enabled: false  serviceId: sc-earth-config-server  label: master  profile: pre consul:  host: http://localhost:8500  port: 80  discovery:   prefer-ip-address: true   #这里是重写健康检查的endPoint，默认为 /health，重写是为了节省不必要的网络传输，只需要http 200状态码即可   health-check-path: /ok/health   heartbeat:   enabled: false

3）启动类：

@SpringBootApplication@EnableFeignClients@EnableZuulServer@ComponentScan(basePackages={"com.iyb.ak"})@EnableDiscoveryClient@Slf4jpublic class SaturnApplication implements CommandLineRunner{ public static void main(String[] args) {  SpringApplication.run(SaturnApplication.class, args); } @Override public void run(String... args) throws Exception {  log.info(">>>>>>>>>>>>>>> sc-saturn 启动完成<<<<<<<<<<<<<"); }}

4）示例：