Springboot项目升级2.2.x升至2.7.x的示例代码

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
<!--        升级为2.7.x的版本-->
    <version>2.7.1</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

<!--        升级2.7后支持yml环境变量名兼容-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-properties-migrator</artifactId>
    <scope>runtime</scope>
</dependency>

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-bootstrap</artifactId>
    <version>3.0.4</version>
</dependency>

<!-- https://mvnrepository.com/artifact/com.alibaba.cloud/spring-cloud-starter-alibaba-nacos-config -->
<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
    <version>2021.0.4.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba.cloud/spring-cloud-starter-alibaba-nacos-discovery -->
<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    <version>2021.0.4.0</version>
</dependency>

spring:
  profiles:
    active: "@profileActive@"
  application:
    name: saas
  cloud:
    nacos:
      server-addr: xx.xx.xx.xx:8848
      discovery:
        server-addr: xx.xx.xx.xx:8848
        namespace: f8f5c0c4-adc9-4c37-be6b-ddc
      config:
        server-addr: xx.xx.xx.xx:8848  #配置中心
        file-extension: yaml   #配置文件后缀名   dataId = application.name  +  file-extension
        namespace: f8f5c0c4-adc9-4c37-be6b-ddc
  config:
    import:
      - optional:nacos:${spring.application.name}-${spring.profiles.active}.${spring.cloud.nacos.config.file-extension} #配置中心

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>

ImportCandidates.load(AutoConfiguration.class, getBeanClassLoader()).forEach(configurations::add);