目标

工程导入
pom.xml
配置文件
监控actuator
启动类
controller

工程导入

解压D:\springcloud\demo-discovery.zip，导入后更改工程名为eureka-service

pom.xml

    <?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>
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.2.2.RELEASE</version>
        </parent>
        <groupId>com.example</groupId>
        <artifactId>demo</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>demo</name>
        <description>Demo project for Spring Boot</description>
    
        <properties>
            <java.version>1.8</java.version>
            <spring-cloud.version>Hoxton.RELEASE</spring-cloud.version>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
            </dependency>
            <!-- 连接bus -->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-bus-amqp</artifactId>
            </dependency>
            <!-- config客户端 -->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-config</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
        </dependencies>
    
        <dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>${spring-cloud.version}</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
            </dependencies>
        </dependencyManagement>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
    </project>

配置文件bootstrap.yml与云相关的配置

  #springboot基本配置
  spring:
    application:
      name: eureka-service
  
      
  server:
    port: 9000
  
  eureka:
    instance:
      instanceId: ${eureka.instance.ipAddress}:${spring.application.name}:${server.port}
      ipAddress: 127.0.0.1
      #是否优先使用ip地址 
      preferIpAddress: true
      #用上述三行替代localhost，改为用ip地址访问
      #hostname: localhost
    client:
       #是否在eureka服务器上注册自己的信息以供其他服务发现 (server端为单机时false，server端有负载时为true client端为true)
      registerWithEureka: true
      #是否获取eureka服务器注册表上的注册信息 eureka-server端为false，其他为true 
      fetchRegistry: true
      #此处为eureka-server服务地址，即指定向谁注册
      serviceUrl:
        defaultZone: http://127.0.0.1:8090/eureka

监控actuator

step 1:核对pom.xml是否有如下包

    <!-- 健康情况、路由情况监控-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>

step2 :application.yml的根节点下新增以下配置

  management:
    endpoint:
      health:
        showDetails: ALWAYS
      gateway:
        enabled: true
    endpoints:
      web:
        base-path: /actuator
        exposure:
          include: "*

step3 测试

http://127.0.0.1:9001/actuator

启动类

@SpringBootApplication
public class ServiceApplication{

    public static void main(String[] args) {
        SpringApplication.run(ServiceApplication.class, args);
    }
}

controller

新建包com.example.demo.controller，并编写如下controller，用于后面的测试

package com.example.demo.controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloController {
    @RequestMapping("/hello")
    public String index(@RequestParam String name) {
        return "hello "+name+"，this is first messge";
    }
}