maven server Downloading The latest maven-metadata.xml file can be regarded as version information. As a version comparison, compare it with the maven-metadata-local.xml in the jar package folder in the local warehouse (.m2/repository). Look at the lastUpdated timestamp value, which value is larger?
找到本地的maven配置文件settings.xml,打开后找到下面：
<repository>
<id>snapshots</id>
<name>Snapshots</name>
<url>url</url>
<releases>
<enabled>false</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
<updatePolicy>always</updatePolicy>
</snapshots>
</repository>
Find the updatePolicy tag in xml and change it to never.
<repository>
<id>snapshots</id>
<name>Snapshots</name>
<url>url</url>
<releases>
<enabled>false</enabled>
</releases>
<snapshots>
<enabled>true< /enabled>
<updatePolicy>never</updatePolicy>
</snapshots>
</repository>
After making the changes, you will not download the maven-metadata.xml file when you go to build. You can change it according to your needs. This attribute is the update strategy, aways: every time, never: never, daily: every day.