SpringCloud从入门到进阶（四）——使用SpringBoot搭建微服务

<?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>
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    <groupId>com.zih.jms</groupId>
    <artifactId>idlegood</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
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    <name>idlegood</name>
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    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.9.RELEASE</version>
        <relativePath/>
    </parent>
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    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>
    
    <!--添加1：在dependencyManagement标签中声明SpringCloud的版本，
    所有的SpringCloud组件的依赖都将使用该版本SpringCloud中规定的版本号 -->
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Dalston.SR1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    
    <dependencies>
    <!--添加2：SpringCloud相关依赖 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>
        
    <!-- SpringBoot相关依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--actuator依赖 Spring Boot提供的项目运行状态监控功能-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
       ...其他省略
        
</project> 

#添加3:eurekaSever配置
eureka:
  client:
   service-url:
     defaultZone: http://eureka7001.com:7001/eureka,http://eureka7002.com:7002/eureka,http://eureka7003.com:7003/eureka
spring:
  #添加4:设置springboot项目的应用名称，并默认启动peer1
  application:
   name: application-idleGoodService   #注意：此处的名称一定要个路由接入服务器中的配置名一致 
   profiles: active: peer1
   datasource: 
    ...
    #省略原有Springboot项目的数据源、redis、mybatis、分页等配置

#添加5：增加日志输出，指明日志存放位置；同时需要在资源路径下引入配置文件
logging:
  file: logs/application-idleGoodService-${server.port}.logs
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#添加6:增加peer1和peer2两种profiles的配置
---
spring:
  profiles: peer1
server:
   port: 8001
eureka:
  instance:
   instance-id: springcloud-idleGoodService-8001
management:
  port: 8101
  security:
   enabled: false
---
spring:
  profiles: peer2
server:
   port: 8002
eureka:
  instance:
   instance-id: springcloud-idleGoodService-8002
management:
  port: 8102
  security:
   enabled: false

//开启EurekaClient
@EnableEurekaClient
@SpringBootApplication
...//包扫描、Swagger、事务的配置省略
public class IdlegoodApplication {
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    //一些bean的注入和创建省略
   ...
        
    public static void main(String[] args) {
        SpringApplication.run(IdlegoodApplication.class, args);
    }
}

@RequestMapping("/test")
@RestController
public class DemoController {
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    @PostMapping("/demoTest/{name}")
    public String demoTest(@PathVariable(value = "name") String name,
                           @RequestParam(value = "from") String user){
        return "Hello "+name+",this is DemoTest.From "+user+" .";
   }
}

#IP     域名      别名
[jms@iz8vb62snc6e5cage5yvzcz jars]$ sudo vi /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
172.26.125.118   eureka7001.com 
172.26.125.118   eureka7002.com 
172.26.125.118   eureka7003.com

java -jar idlegood-0.0.1-SNAPSHOT.jar --spring.profiles.active=peer1  & #服务器A
java -jar idlegood-0.0.1-SNAPSHOT.jar --spring.profiles.active=peer2  & #服务器B

2018-10-23 19:09:01.809  INFO 9621 --- [nio-7081-exec-1] c.n.l.DynamicServerListLoadBalancer     
: DynamicServerListLoadBalancer for client application-idleGoodService initialized: 
DynamicServerListLoadBalancer:{NFLoadBalancer:name=application-idleGoodService,
#下面这句可以看出，EurekaServer默认是按“主机名：端口号”的形式存储EurekaClient的信息
current list of Servers=[iz8vb6a56ld0vy6vuaijriz:8002, iz8vb6a56ld0vy6vuaijrjz:8001],
Load balancer stats=Zone stats: {defaultzone=[Zone:defaultzone;       Instance count:2;
Active connections count: 0;   Circuit breaker tripped count: 0;   Active connections per server: 0.0;]