首先抛问题，在maven clean的时候出现下面的错误：
错误源代码如下：
[ERROR] The build could not read 1 project -> [Help 1]
[ERROR]
[ERROR] The project com.**:**:2.0.0 (D:\JAVA\**-policy\pom.xml) has 1 error
[ERROR] Non-resolvable parent POM for com.**:**:2.0.0: The following artifacts could not be resolved: org.springframework.boot:spring-boot-starter-parent:pom:3.2.6 (absent): Could not transfer artifact org.springframework.boot:spring-boot-starter-parent:pom:3.2.6 from/to central (https://repo.maven.apache.org/maven2): Connect to repo.maven.apache.org:443 [repo.maven.apache.org/146.75.112.215] failed: Connect timed out and 'parent.relativePath' points at no local POM @ line 25, column 13 -> [Help 2]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.原因就是maven没有指定仓库地址：
解决思路如下，找到maven安装路径下的settings文件：
编辑该文件，将里面的maven镜像地址换成自己的地址：
保存后再回到工程里的settings，制定maven地址：
之后maven clean、install就都可以啦！