微服务
实践“微服务”自然要学习如何做服务注册与发现
基于SpringBoot来进行微服务的学习，自然选择了与之息息相关的SpringCloud;当然可以选择其他的技术进行，比如dubbo
也可以用zookeeper来实现服务注册与发现，至于zookeeper来实现此功能好还是不好，各家之言都有
SpringCloud
Spring Cloud provides tools for developers to quickly build some of the common patterns in distributed systems .SpringCloud
SpringCloud 包含了 Distributed/versioned configuration、Distributed/versioned configuration等很多子项目。
- Distributed/versioned configuration
- Service registration and discovery
- Routing
- Service-to-service calls
- Load balancing
- Circuit Breakers
- Global locks
- Leadership election and cluster state
- Distributed messaging
服务注册与发现
SpringCloud模块
spring-cloud-starter-eureka-server
工程module
- 服务注册中心
- 服务module
服务注册中心
创建discovery module,并在 build.gradle中引入 spring-cloud-starter-eureka-server依赖
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apply plugin: 'org.springframework.boot'dependencyManagement { imports { mavenBom "org.springframework.cloud:spring-cloud-dependencies:"+ springCloudVersion }}repositories { mavenCentral()}dependencies { compile ('org.springframework.cloud:spring-cloud-starter-eureka-server')}jar { baseName = 'discovery-bootcwenao'} |
通过注解 @EnableEurekaServer 提供注册中心服务
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/** * @author cwenao * @version $Id DiscoveryBootcwenaoApplication.java, v 0.1 2017-01-12 9:56 cwenao Exp $$ */@EnableEurekaServer@SpringBootApplicationpublic class DiscoveryBootcwenaoApplication { public static void main(String[] args) { new SpringApplicationBuilder(DiscoveryBootcwenaoApplication.class).web(true).run(args); }} |
application.yml 配置eureka属性
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server: port: 8761eureka: instance: hostname: discovery client: registerWithEureka: false fetchRegistry: false service-url: defaultZone: http://discovery:${server.port}/eureka/ |
访问 http://localhost:8761
服务注册
创建服务module, 在build.gradle中引入 spring-cloud-starter-eureka
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apply plugin: 'org.springframework.boot'dependencyManagement { imports { mavenBom "org.springframework.cloud:spring-cloud-dependencies:"+ springCloudVersion }}dependencies { compile('org.springframework.cloud:spring-cloud-starter-eureka') compile('org.springframework.cloud:spring-cloud-stream')}sourceSets { main { resources.srcDirs = ['src/main/resources', 'src/main/java'] resources.includes = ['**/*.xml', '**/*.yml'] }}jar { baseName = 'apigateway-bootcwenao'} |
通过注解 @EnableDiscoveryClient 进行服务注册
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@SpringBootApplication@EnableDiscoveryClientpublic class ApiGatewayBootcwenaoApplication { public static void main(String[] args) { SpringApplication.run(ApiGatewayBootcwenaoApplication.class, args); }} |
application.yml 配置eureka属性
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server: port: 10002spring: application: name: apigatewayeureka: client: registerWithEureka: true fetchRegistry: true serviceUrl: defaultZone: http://localhost:8761/eureka/ |
注册完成后，可以通过 spring.application.name 的配置来访问该服务
访问 http://localhost:8761 发现服务已经在注册中心上注册
服务注册中心启用用户名密码
通过配置applicaiton.yml用户名密码
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security: basic: enabled: true user: name: aa password: abcd |
配置服务提供方application.yml
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eureka: instance: hostname: configserver prefer-ip-address: true client: registerWithEureka: true fetchRegistry: true service-url: defaultZone: http://aa:abcd@localhost:8761/eureka/ |
代码请移步 Github参考地址
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：http://www.jianshu.com/p/db45c87e72b6
