Failed to transfer file: ... Return code is: 501 , ReasonPhrase:HTTPS Required.

现场

maven工程

解决【works for me】

修改 setting.xml，官方文档

<mirror>
  <id>repo1</id>
  <mirrorOf>central</mirrorOf>
  <name>Human Readable Name for this Mirror.</name>
  <url>https://repo1.maven.org/maven2/</url>
</mirror>

<mirror>
  <id>repo2</id>
  <mirrorOf>central</mirrorOf>
  <name>Human Readable Name for this Mirror.</name>
  <url>https://repo2.maven.org/maven2/</url>
</mirror>

<mirror>
  <id>alimaven</id>
  <name>aliyun maven</name>
  <url>https://maven.aliyun.com/nexus/content/groups/public/</url>
  <mirrorOf>central</mirrorOf>
</mirror>

查阅

• Maven dependencies are failing with a 501 error

Effective January 15, 2020, The Central Repository no longer supports insecure communication over plain HTTP and requires that all requests to the repository are encrypted over HTTPS.