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springcloud-demo's Introduction

springcloud-demo

springcloud demo。包括如下组件:

  • spring cloud config : 作为配置中心
  • eureka server: 作为服务注册中心
  • eureka client : 服务注册中心的客户端
  • admin: 监控控制台,是web ui界面
  • hystrix dashboard:
  • user-service: 运行一个服务demo
  • service-client: 调用user service的服务,使用RestTemplate通过服务注册中心获取服务提供者地址
  • feign-client: 通过@Feign远程调用服务
  • spring cloud zipkin server: 作为tracing系统

说明

启动方法

进入每个工程,有两种方式

mvn spring-boot:run

在pom.xml目前下,运行下面的命令即可。

mvn spring-boot:run

java -jar xxx.jar

在pom.xml目录下,生成jar包

mvn clean install -Dmaven.test.skip=true
cd target
java -jar xxx.jar
cd configuration-service
mvn clean install -Dmaven.test.skip=true

cd ../eureka-service
mvn clean install -Dmaven.test.skip=true

cd ../admin
mvn clean install -Dmaven.test.skip=true

cd ../hystrixdashboard
mvn clean install -Dmaven.test.skip=true

cd ../zipkinservice
mvn clean install -Dmaven.test.skip=true

cd ../userservice
mvn clean install -Dmaven.test.skip=true

cd ../feignclient
mvn clean install -Dmaven.test.skip=true

cd ../serviceclient
mvn clean install -Dmaven.test.skip=true

cd ../zuulapigateway
mvn clean install -Dmaven.test.skip=true

启动顺序

  1. configuration-service
  2. eureka-service
  3. admin
  4. hystrixdashboard
  5. zipkinservice
  6. userservice
  7. feignclient
  8. serviceclient
  9. zuulapigateway
cd configuration-service
mvn spring-boot:run &

cd ../eureka-service
mvn spring-boot:run &

cd ../admin
mvn spring-boot:run &

cd ../hystrixdashboard
mvn spring-boot:run &

cd ../zipkinservice
mvn spring-boot:run &

cd ../userservice
mvn spring-boot:run &

cd ../feignclient
mvn spring-boot:run &

cd ../serviceclient
mvn spring-boot:run &

cd ../zuulapigateway
mvn spring-boot:run &

说明一下:上面的脚本,是跑不起来的,建议一个一个启动,上一个启动成功了,再启动下一个.为什么呢?因为服务有顺序依赖.

@Feign报错

错误如下:

class not found : Feign.LOG

原因:

resttemplate和@Feign不能共存,因为这个问题,导致浪费2小时

user-service无法注册到zipkin server

现象

在zipkin server的web ui中,看不到user-service,导致2小时没有,看代码,分析原因,眼睛疼死了。

原因

神器idea mvn install不行,需要手工 mvn reimport一下。通过maven插件可以看zipkin的依赖是否加载成功。 成功的话,就可以在web-ui中看到user-service.

待做

  • zipkin目前是把数据放在mem当中,需要调研rabbit mq存储数据。
  • spring cloud stream也要研究一下
  • 性能测试需要关注
  • admin 增加邮件支持
  • admin 监控增加ssl支持
  • zuul API 网关,作安全攻防用,参数修改使用
  • 日志系统集成
  • mysql 日志监控:mybatis + logback

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