Springboot版本选择

git源码地址：

https://github.com/spring-projects/spring-boot/releases/

SpringBoot2.0新特性：

https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2.0-Release-Notes

通过上面官网发现，Boot官方强烈建议你升级到2.X以上版本

官网看Boot版本

Springcloud版本选择

git源码地址：

https://github.com/spring-projects/spring-cloud

官网：

https://spring.io/projects/spring-cloud

官网看Cloud版本：

Cloud命名规则

SpringCloud的版本关系

Spring Cloud 采用了英国伦敦地铁站的名称来命名，并由地铁站名称字母A-Z依次类推的形式来发布迭代版本
SpringCloud是一个由许多子项目组成的综合项目，各子项目有不同的发布节奏。为了管理SpringCloud与各子项目的版本依赖关系，发布了一个清单，其中包括了某个SpringCloud版本对应的子项目版本。为了避免SpringCloud版本号与子项目版本号混淆，SpringCloud版本采用了名称而非版本号的命名，这些版本的名字采用了伦敦地铁站的名字，根据字母表的顺序来对应版本时间顺序。例如Angel是第一个版本, Brixton是第二个版本。
当SpringCloud的发布内容积累到临界点或者一个重大BUG被解决后，会发布一个"service releases"版本，简称SRX版本，比如Greenwich.SR2就是SpringCloud发布的Greenwich版本的第2个SRX版本

Springcloud和Springboot之间的依赖关系如何看

https://spring.io/projects/spring-cloud#overview

更详细的版本对应查看方法

https://start.spring.io/actuator/info

{
    "git": {
        "branch": "ef5e2f1b610c116715b5a462647afe3c6081e27b",
        "commit": {
            "id": "ef5e2f1",
            "time": "2022-04-18T11:28:12Z"
        }
    },
    "build": {
        "version": "0.0.1-SNAPSHOT",
        "artifact": "start-site",
        "versions": {
            "spring-boot": "2.6.6",
            "initializr": "0.13.0-SNAPSHOT"
        },
        "name": "start.spring.io website",
        "time": "2022-04-18T11:29:13.561Z",
        "group": "io.spring.start"
    },
    "bom-ranges": {
        "codecentric-spring-boot-admin": {
            "2.4.3": "Spring Boot >=2.3.0.M1 and <2.5.0-M1",
            "2.5.6": "Spring Boot >=2.5.0.M1 and <2.6.0-M1",
            "2.6.5": "Spring Boot >=2.6.0.M1 and <2.7.0-M1"
        },
        "solace-spring-boot": {
            "1.1.0": "Spring Boot >=2.3.0.M1 and <2.6.0-M1",
            "1.2.1": "Spring Boot >=2.6.0.M1 and <2.7.0-M1"
        },
        "solace-spring-cloud": {
            "1.1.1": "Spring Boot >=2.3.0.M1 and <2.4.0-M1",
            "2.1.0": "Spring Boot >=2.4.0.M1 and <2.6.0-M1",
            "2.3.0": "Spring Boot >=2.6.0.M1 and <2.7.0-M1"
        },
        "spring-cloud": {
            "Hoxton.SR12": "Spring Boot >=2.2.0.RELEASE and <2.4.0.M1",
            "2020.0.5": "Spring Boot >=2.4.0.M1 and <2.6.0-M1",
            "2021.0.0-M1": "Spring Boot >=2.6.0-M1 and <2.6.0-M3",
            "2021.0.0-M3": "Spring Boot >=2.6.0-M3 and <2.6.0-RC1",
            "2021.0.0-RC1": "Spring Boot >=2.6.0-RC1 and <2.6.1",
            "2021.0.1": "Spring Boot >=2.6.1 and <2.6.7-SNAPSHOT",
            "2021.0.2-SNAPSHOT": "Spring Boot >=2.6.7-SNAPSHOT and <3.0.0-M1",
            "2022.0.0-M1": "Spring Boot >=3.0.0-M1 and <3.0.0-M2",
            "2022.0.0-M2": "Spring Boot >=3.0.0-M2 and <3.1.0-M1"
        },
        "spring-cloud-azure": {
            "4.0.0": "Spring Boot >=2.5.0.M1 and <2.7.0-M1"
        },
        "spring-cloud-gcp": {
            "2.0.10": "Spring Boot >=2.4.0-M1 and <2.6.0-M1",
            "3.2.1": "Spring Boot >=2.6.0-M1 and <2.7.0-M1"
        },
        "spring-cloud-services": {
            "2.3.0.RELEASE": "Spring Boot >=2.3.0.RELEASE and <2.4.0-M1",
            "2.4.1": "Spring Boot >=2.4.0-M1 and <2.5.0-M1",
            "3.3.0": "Spring Boot >=2.5.0-M1 and <2.6.0-M1",
            "3.4.0": "Spring Boot >=2.6.0-M1 and <2.7.0-M1"
        },
        "spring-geode": {
            "1.3.12.RELEASE": "Spring Boot >=2.3.0.M1 and <2.4.0-M1",
            "1.4.13": "Spring Boot >=2.4.0-M1 and <2.5.0-M1",
            "1.5.12": "Spring Boot >=2.5.0-M1 and <2.6.0-M1",
            "1.6.6": "Spring Boot >=2.6.0-M1 and <2.7.0-M1",
            "1.7.0-M3": "Spring Boot >=2.7.0-M1 and <3.0.0-M1",
            "2.0.0-M2": "Spring Boot >=3.0.0-M1 and <3.1.0-M1"
        },
        "vaadin": {
            "14.8.8": "Spring Boot >=2.1.0.RELEASE and <2.6.0-M1",
            "23.0.6": "Spring Boot >=2.6.0-M1 and <2.8.0-M1"
        },
        "wavefront": {
            "2.0.2": "Spring Boot >=2.1.0.RELEASE and <2.4.0-M1",
            "2.1.1": "Spring Boot >=2.4.0-M1 and <2.5.0-M1",
            "2.2.2": "Spring Boot >=2.5.0-M1 and <2.7.0-M1"
        }
    },
    "dependency-ranges": {
        "native": {
            "0.9.0": "Spring Boot >=2.4.3 and <2.4.4",
            "0.9.1": "Spring Boot >=2.4.4 and <2.4.5",
            "0.9.2": "Spring Boot >=2.4.5 and <2.5.0-M1",
            "0.10.0": "Spring Boot >=2.5.0-M1 and <2.5.2",
            "0.10.1": "Spring Boot >=2.5.2 and <2.5.3",
            "0.10.2": "Spring Boot >=2.5.3 and <2.5.4",
            "0.10.3": "Spring Boot >=2.5.4 and <2.5.5",
            "0.10.4": "Spring Boot >=2.5.5 and <2.5.6",
            "0.10.5": "Spring Boot >=2.5.6 and <2.5.9",
            "0.10.6": "Spring Boot >=2.5.9 and <2.6.0-M1",
            "0.11.0-M1": "Spring Boot >=2.6.0-M1 and <2.6.0-RC1",
            "0.11.0-M2": "Spring Boot >=2.6.0-RC1 and <2.6.0",
            "0.11.0-RC1": "Spring Boot >=2.6.0 and <2.6.1",
            "0.11.0": "Spring Boot >=2.6.1 and <2.6.2",
            "0.11.1": "Spring Boot >=2.6.2 and <2.6.3",
            "0.11.2": "Spring Boot >=2.6.3 and <2.6.4",
            "0.11.3": "Spring Boot >=2.6.4 and <2.6.6",
            "0.11.4": "Spring Boot >=2.6.6 and <2.7.0-M1"
        },
        "okta": {
            "1.4.0": "Spring Boot >=2.2.0.RELEASE and <2.4.0-M1",
            "1.5.1": "Spring Boot >=2.4.0-M1 and <2.4.1",
            "2.0.1": "Spring Boot >=2.4.1 and <2.5.0-M1",
            "2.1.5": "Spring Boot >=2.5.0-M1 and <2.7.0-M1"
        },
        "mybatis": {
            "2.1.4": "Spring Boot >=2.1.0.RELEASE and <2.5.0-M1",
            "2.2.2": "Spring Boot >=2.5.0-M1"
        },
        "camel": {
            "3.5.0": "Spring Boot >=2.3.0.M1 and <2.4.0-M1",
            "3.10.0": "Spring Boot >=2.4.0.M1 and <2.5.0-M1",
            "3.13.0": "Spring Boot >=2.5.0.M1 and <2.6.0-M1",
            "3.16.0": "Spring Boot >=2.6.0.M1 and <2.7.0-M1"
        },
        "picocli": {
            "4.6.3": "Spring Boot >=2.4.0.RELEASE and <3.0.0-M1"
        },
        "open-service-broker": {
            "3.2.0": "Spring Boot >=2.3.0.M1 and <2.4.0-M1",
            "3.3.1": "Spring Boot >=2.4.0-M1 and <2.5.0-M1",
            "3.4.0-M2": "Spring Boot >=2.5.0-M1 and <2.6.0-M1"
        }
    }
}

该练习版本选择

cloud：Hoxton.SR1

boot：2.2.2.RELEASE

cloud alibaba：2.1.0.RELEASE

Java：Java8

Maven：3.5及以上

Mysql：5.7及以上

SpringBoot版本和SpringCloud版本需要对应
同时用boot和cloud，需要照顾cloud，由cloud决定boot版本