springCloud学习笔记(三)——eureka服务消费者

一、项目搭建

1.引入jar

 <!--   引入eureka客户端     -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

2.完整的pom文件内容

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <artifactId>com.springcloud</artifactId>
        <groupId>com.sc2020</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <groupId>com.example</groupId>
    <artifactId>consumer-eureka-client81</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <name>consumer-client81</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>com.sc2020</groupId>
            <artifactId>cloud-payment8001</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>com.sc2020</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.10</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <!--   引入eureka客户端     -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
    </dependencies>
</project>

3.yml文件配置

server:
  port: 81
eureka:
  client:
    register-with-eureka: true   #是否将自己注册到注册中心,集群必须设置为true配合ribbon
    fetch-registry: true    #是否从服务端抓取已有的注册信息
    service-url:
      defaultZone: http://eureka7001.com:7001/eureka #hosts文件配置了eureka7001.com,如果没有配置则使用localhost
  instance:
    instance-id: consumer-client81
    prefer-ip-address: true
spring:
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: org.gjt.mm.mysql.Driver
    url: jdbc:mysql://101.34.49.127:3306/cloud?useUnicode=true&characterEncoding=utf-8&useSSL=false
    username: 你的数据库用户
    password: 你的数据用户密码
  application:
    name: consumer-client
mybatis:
  mapper-locations: classpath:mapper/*.xml

4.Application中main方法

@SpringBootApplication
@EnableEurekaClient
public class ConsumerEurekaClient81Application {
    public static void main(String[] args) {
        SpringApplication.run(ConsumerEurekaClient81Application.class, args);
    }
}

注意:使用@EnableEurekaClient注解声明使用eureka组件

5.Controller控制层方法

@RestController
public class TestController {
    @Resource
    RestTemplate restTemplate;
    //你的服务提供者的名称
    public static final String PAYMENT_URL = "http://cloud-eureka-client";
    @GetMapping(value = "getMessage")
    public String getMessage(){
        //你项目服务提供者的接口路径
        String forObject = restTemplate.getForObject( PAYMENT_URL +"/paymentController/getPortMessage", String.class);
        return forObject;
    }
}

6.请求访问

请求访问CLOUD-EUREKA-CLIENT7003接口

项目地址: https://gitee.com/xyz1041221997/springcloud.git