Spring Boot 升级 Spring Cloud

Spring Boot 单体应用升级 Spring Cloud 微服务说明

第一步：添加 Spring Cloud 依赖

<dependencies>
    <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-loadbalancer</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-openfeign</artifactId>
    </dependency>
</dependencies>
<dependencyManagement>
    <dependencies>
        <!--spring cloud-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>2020.0.3</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
        <!--spring cloud alibaba-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-alibaba-dependencies</artifactId>
            <version>2021.0.1.0</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

第二步：添加配置

spring:
  application:
    #项目名称必填，在注册中心唯一
    name: service-provider
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848

第三步：启动类增加注解

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

第四步：调整服务调用方式

RestTemplate 模式

FeignClient 模式