詳解利用SpringCloud搭建一個最簡單的微服務框架

更新時間：2017年11月13日 11:15:57 作者：程序猿DD

這篇文章主要介紹了詳解利用SpringCloud搭建一個最簡單的微服務框架，小編覺得挺不錯的，現(xiàn)在分享給大家，也給大家做個參考。一起跟隨小編過來看看吧

Spring Cloud是一個基于Spring Boot實現(xiàn)的云應用開發(fā)工具，它為基于JVM的云應用開發(fā)中的配置管理、服務發(fā)現(xiàn)、斷路器、智能路由、微代理、控制總線、全局鎖、決策競選、分布式會話和集群狀態(tài)管理等操作提供了一種簡單的開發(fā)方式。

Spring Cloud包含了多個子項目（針對分布式系統(tǒng)中涉及的多個不同開源產(chǎn)品），比如：Spring Cloud Config、Spring Cloud Netflix、Spring Cloud CloudFoundry、Spring Cloud AWS、Spring Cloud Security、Spring Cloud Commons、Spring Cloud Zookeeper、Spring Cloud CLI等項目。

1.微服務

微服務主要包含服務注冊，服務發(fā)現(xiàn)，服務路由，服務配置，服務熔斷，服務降級等一系列的服務，而Spring Cloud為我們提供了個一整套的服務；

本例子為你提供了最簡單的一個服務發(fā)現(xiàn)例子，包含服務注冊發(fā)現(xiàn)spingCloudEurekaServer、服務配置中心spingCloudConfServer、以及一個app應用springCloudApp

2.服務注冊與發(fā)現(xiàn)

spingCloudEurekaServer

pom.xml

<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.caicongyang</groupId> 
 <artifactId>spingCloudEurekaServer</artifactId> 
 <version>0.0.1-SNAPSHOT</version> 
 <parent> 
  <groupId>org.springframework.cloud</groupId> 
  <artifactId>spring-cloud-starter-parent</artifactId> 
  <version>Angel.SR6</version> 
 </parent> 
 <dependencies>   
  <dependency> 
   <groupId>org.springframework.cloud</groupId> 
   <artifactId>spring-cloud-starter-eureka-server</artifactId> 
  </dependency> 
 </dependencies> 
 <build> 
  <plugins> 
   <plugin> 
    <groupId>org.springframework.boot</groupId> 
    <artifactId>spring-boot-maven-plugin</artifactId> 
   </plugin> 
  </plugins> 
 </build> 
</project>

Application.java

package com.caicongyang.eureka; 
 
import org.springframework.boot.SpringApplication; 
import org.springframework.boot.autoconfigure.SpringBootApplication; 
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer; 
 
/** 
 * Spring could EurekaServer程序主入口 
 * 
 * @author Administrator 
 * 
 */ 
@SpringBootApplication 
@EnableEurekaServer 
public class Application { 
 public static void main(String[] args) { 
  SpringApplication.run(Application.class, args); 
 } 
}

application.yml （可用properties替代）

server: 
  port: 9999 
eureka: 
  instance: 
   hostname: 127.0.0.1 
  client: 
   registerWithEureka: false 
   fetchRegistry: false 
   serviceUrl: 
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

3.服務配置（全局配置中心）

pom.xml

<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.caicongyang</groupId> 
 <artifactId>spingCloudConfServer</artifactId> 
 <version>0.0.1-SNAPSHOT</version> 
 
 <parent> 
  <groupId>org.springframework.cloud</groupId> 
  <artifactId>spring-cloud-starter-parent</artifactId> 
  <version>Angel.SR6</version> 
 </parent> 
 <dependencies> 
  <dependency> 
   <groupId>org.springframework.cloud</groupId> 
   <artifactId>spring-cloud-config-server</artifactId> 
  </dependency> 
  <!-- sping cloud 注冊服務 --> 
  <dependency> 
   <groupId>org.springframework.cloud</groupId> 
   <artifactId>spring-cloud-starter-eureka</artifactId> 
  </dependency> 
  <dependency> 
   <groupId>org.springframework.boot</groupId> 
   <artifactId>spring-boot-starter-test</artifactId> 
   <scope>test</scope> 
  </dependency> 
 </dependencies> 
 
 <build> 
  <plugins> 
   <plugin> 
    <groupId>org.springframework.boot</groupId> 
    <artifactId>spring-boot-maven-plugin</artifactId> 
   </plugin> 
  </plugins> 
  <defaultGoal>compile</defaultGoal> 
 </build> 
</project>

application.java

package com.caiconyang.conf; 
 
import org.springframework.boot.SpringApplication; 
import org.springframework.boot.autoconfigure.SpringBootApplication; 
import org.springframework.cloud.config.server.EnableConfigServer; 
 
/** 
 * Spring could conf程序主入口 
 * @author Administrator 
 * 
 */ 
@SpringBootApplication 
@EnableConfigServer 
public class Application { 
 public static void main(String[] args) {  
  SpringApplication.run(Application.class,args);  
 }  
}

application.properties

server.port=8888 
## App配置文件所在git地址 
spring.cloud.config.server.git.uri=https://git.oschina.net/caicongyang/springCloudConfigRepo.git 
spring.cloud.config.server.git.searchPaths=repo 
spring.application.name=spingCloudConfServer

4.App

pom.xml

<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.caicongyang</groupId> 
 <artifactId>springCloudApp</artifactId> 
 <version>0.0.1-SNAPSHOT</version> 
 
 <parent> 
  <groupId>org.springframework.cloud</groupId> 
  <artifactId>spring-cloud-starter-parent</artifactId> 
  <version>Angel.SR6</version> 
 </parent> 
 <properties> 
  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
  <java.version>1.7</java.version> 
  <java.encoding>UTF-8</java.encoding> 
  <springfox.swagger.version>2.2.2</springfox.swagger.version> 
 </properties> 
 <dependencies> 
  <dependency> 
   <groupId>org.springframework.boot</groupId> 
   <artifactId>spring-boot-starter-web</artifactId> 
  </dependency> 
  <!-- sping cloud 監(jiān)控 http://localhost:8080/health --> 
  <dependency> 
   <groupId>org.springframework.boot</groupId> 
   <artifactId>spring-boot-starter-actuator</artifactId> 
  </dependency> 
  <dependency> 
   <groupId>org.springframework.cloud</groupId> 
   <artifactId>spring-cloud-starter-config</artifactId> 
  </dependency> 
  <!-- sping cloud 注冊服務 --> 
  <dependency> 
   <groupId>org.springframework.cloud</groupId> 
   <artifactId>spring-cloud-starter-eureka</artifactId> 
  </dependency> 
   <!-- sping cloud 路由 --> 
  <dependency> 
   <groupId>org.springframework.cloud</groupId> 
   <artifactId>spring-cloud-starter-hystrix</artifactId> 
  </dependency> 
 
  <dependency> 
   <groupId>org.springframework.boot</groupId> 
   <artifactId>spring-boot-starter-test</artifactId> 
   <scope>test</scope> 
  </dependency> 
  <dependency> 
   <groupId>io.springfox</groupId> 
   <artifactId>springfox-swagger2</artifactId> 
   <version>${springfox.swagger.version}</version> 
  </dependency> 
  <dependency> 
   <groupId>io.springfox</groupId> 
   <artifactId>springfox-swagger-ui</artifactId> 
   <version>${springfox.swagger.version}</version> 
  </dependency> 
 </dependencies> 
  
 
 <build> 
  <finalName>spingcould</finalName> 
  <plugins> 
   <plugin> 
    <groupId>org.apache.maven.plugins</groupId> 
    <artifactId>maven-compiler-plugin</artifactId> 
    <configuration> 
     <source>${java.version}</source> 
     <target>${java.version}</target> 
     <encoding>${java.encoding}</encoding> 
     <showWarnings>true</showWarnings> 
    </configuration> 
   </plugin> 
  </plugins> 
 </build> 
 
 
</project>

Application.java

package com.caicongyang.springCloudApp.main; 
 
import org.springframework.boot.SpringApplication; 
import org.springframework.boot.autoconfigure.EnableAutoConfiguration; 
import org.springframework.cloud.client.discovery.EnableDiscoveryClient; 
import org.springframework.context.annotation.ComponentScan; 
import org.springframework.context.annotation.Configuration; 
 
/** 
 * Spring could web程序主入口 
 * @author Administrator 
 * 
 */ 
@Configuration//配置控制 
@EnableAutoConfiguration//啟用自動配置 
@ComponentScan(value={"com.caicongyang.springCloudApp"})//組件掃描 
@EnableDiscoveryClient 
public class Application { 
 public static void main(String[] args) {  
  //第一個簡單的應用，  
  SpringApplication.run(Application.class,args);  
 }  
}

SwaggerConfig.java

package com.caicongyang.springCloudApp.conf; 
 
import org.springframework.beans.factory.annotation.Value; 
import org.springframework.context.annotation.Bean; 
import org.springframework.context.annotation.Configuration; 
 
import springfox.documentation.service.ApiInfo; 
import springfox.documentation.spi.DocumentationType; 
import springfox.documentation.spring.web.plugins.Docket; 
import springfox.documentation.swagger2.annotations.EnableSwagger2; 
 
/** 
 * 
 * @author caicongyang1 
 * @version id: SwaggerConfig, v 0.1 16/4/22 下午4:12 caicongyang1 Exp $$ 
 */ 
@Configuration 
@EnableSwagger2 
public class SwaggerConfig { 
 
 @Value("${swagger.ui.enable}") //該配置項在配置中心管理 
 private boolean environmentSpecificBooleanFlag; 
  
 @Bean 
 public Docket docketFactory() { 
  return new Docket(DocumentationType.SWAGGER_2).apiInfo( 
   new ApiInfo("接口文檔", "SpingCloud web接口列表", "1.0", "", "", "", "")).enable(environmentSpecificBooleanFlag); 
 } 
}

application.properties

server.port=8080 
spring.cloud.config.uri=http://127.0.0.1:8888 
spring.cloud.config.name=springCloudApp 
spring.cloud.config.profile=${config.profile:dev} 
#service discovery url 
eureka.client.serviceUrl.defaultZone=http://localhost:9999/eureka/ 
#service name 
spring.application.name=springCloudApp

5.測試與驗證

順序啟動服務注冊發(fā)現(xiàn)spingCloudEurekaServer、服務配置中心spingCloudConfServer、以及一個app應用springCloudApp

測試與驗證

1.訪問http://localhost:9999/eureka/ app是否已經(jīng)注冊上來

2.訪問 http://localhost:8080/swagger-ui.html 是否正常訪問，如果正常訪問說明爭取讀取到config配置中心的swagger.ui.enable配置項

6.源碼：以上所有源碼：springcloud_jb51.rar

以上就是本文的全部內(nèi)容，希望對大家的學習有所幫助，也希望大家多多支持腳本之家。

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