springCloud学习记录

SpringCloud Alibaba Nacos（服务注册）

相当于集成了Eureka+Config+Bus的解决方案

Nacos安装

1、下载并安装nacos（https://github.com/alibaba/nacos/releases）
windows下载zip；linux下载gz
2、解压后打开conf下application.properties，配置数据库中信息，配置文件为同目录的nacos-mysql.sql

3、修改bin目录下的startup.cmd文件，改为单机模式

4、执行startup.cmd
5、打开http://localhost:8848/nacos/，账号密码为nacos

服务注册

服务端

父pom

            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>2.1.0.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

pom

        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

yml

server:
  port: 9001

spring:
  application:
    name: nacos-payment-provider
  cloud:
    nacos:
      discovery:
        server-addr: localhost:8848 # nacos地址

management:
  endpoints:
    web:
      exposure:
        include: "*"

启动类

@SpringBootApplication
@EnableDiscoveryClient
public class PaymentMain9001 {
    public static void main(String[] args) {
        SpringApplication.run(PaymentMain9001.class, args);
    }
}

controller

@RestController
public class PaymentController {

    @Value("${server.port}")
    private String serverPort;

    @GetMapping("/payment/nacos/{id}")
    public String getPayment(@PathVariable("id") Integer id){
        return "nacos register, serverport=" + serverPort + "\t id:" + id;
    }
}

客户端

pom

        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

yml

server:
  port: 83

spring:
  application:
    name: nacos-order-consumer
  cloud:
    nacos:
      discovery:
        server-addr: localhost:8848

#消费者将要去访问的微服务名称（注册成功进nacos的微服务提供者）
service-url:
  nacos-user-service: http://nacos-payment-provider

启动类

@SpringBootApplication
@EnableDiscoveryClient
public class OrderNacosMain83 {
    public static void main(String[] args) {
        SpringApplication.run(OrderNacosMain83.class, args);
    }
}

请求配置

@Configuration
public class ApplicationContextConfig {

    @Bean
    @LoadBalanced
    public RestTemplate getRestTemplate(){
        return new RestTemplate();
    }
}

controller

@RestController
@Slf4j
public class OrderNacosController {

    @Resource
    private RestTemplate restTemplate;

    @Value("${service-url.nacos-user-service}")
    private String serverUrl;

    @GetMapping("/consumer/payment/nacos/{id}")
    public String paymentInfo(@PathVariable("id") Integer id){
        return restTemplate.getForObject(serverUrl + "/payment/nacos/" + id, String.class);
    }
}