springcloud alibaba——nacos作为注册中心

一、服务提供者1

1、pom文件

<?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">
    <parent>
        <artifactId>springcloud</artifactId>
        <groupId>com.springcloud</groupId>
        <version>1.0.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>alibaba-payment-provider9001</artifactId>

    <dependencies>

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

        <dependency>
            <groupId>com.springcloud</groupId>
            <artifactId>api-commons</artifactId>
            <version>1.0.0</version>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

    </dependencies>

</project>

2、主配置文件

server:
  port: 9001

spring:
  application:
    name: nacos-payment-provider

  cloud:
    nacos:
      discovery:
        server-addr: localhost:8848   #配置nacos地址

management:
  endpoints:
    web:
      exposure:
        exclude: '*'

3、控制器

package com.springcloud.controller;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author dc
 * @date 2020/8/11 - 10:02
 */
@RestController
public class PaymentController {

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

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

}

4、主启动类

package com.springcloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

/**
 * @author dc
 * @date 2020/8/11 - 10:01
 */
@SpringBootApplication
@EnableDiscoveryClient
public class PaymentMain9001 {

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

二、服务提供者2

与服务提供者1（除了端口号）完全相同

三、服务消费者

1、pom文件

<?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">
    <parent>
        <artifactId>springcloud</artifactId>
        <groupId>com.springcloud</groupId>
        <version>1.0.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>alibaba-payment-consumer-nacos83</artifactId>

    <dependencies>

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

        <dependency>
            <groupId>com.springcloud</groupId>
            <artifactId>api-commons</artifactId>
            <version>1.0.0</version>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

    </dependencies>


</project>

2、主配置文件

server:
  port: 83

spring:
  application:
    name: nacos-payment-consumer

  cloud:
    nacos:
      discovery:
        server-addr: localhost:8848   #配置nacos地址

#消费者将要去访问的微服务名称（成功注册进nacos的微服务提供者）,可配可不配。
service-url:
  nacos-user-service: http://nacos-payment-provider

3、配置文件

package com.springcloud.config;

import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;

/**
 * @author dc
 * @date 2020/8/11 - 10:30
 */
@Configuration  //定义该类为配置类
public class ApplicationContextConfig {

    @Bean   //将返回值注入spring容器
    @LoadBalanced   //负载均衡注解
    public RestTemplate getRestTemplate() {
        return new RestTemplate();
    }

}

4、控制器

package com.springcloud.controller;

import org.omg.CORBA.StringHolder;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;

/**
 * @author dc
 * @date 2020/8/11 - 10:32
 */
@RestController
public class OrderNacosController {

    //写法1
    //private final static String SERVER_URL = "http://nacos-payment-provider";

    //写法2
    @Value("${service-url.nacos-user-service}")
    private String serverUrl;

    @Resource
    private RestTemplate restTemplate;

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

}

5、主启动类

package com.springcloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

/**
 * @author dc
 * @date 2020/8/11 - 10:28
 */
@SpringBootApplication
@EnableDiscoveryClient
public class PaymentMain83 {

    public static void main(String[] args) {
        SpringApplication.run(PaymentMain83.class, args);
    }

}