有可能是因为网络原因下载了一半就停止了,建议去.m2文件夹删除已经下载的jar文件。
https://www.imooc.com/qadetail/252836?t=406979
同时配置一下settings.xml,内容如下:
<?xml version="1.0" encoding="UTF-8"?>
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
<mirrors>
<mirror>
<id>nexus-aliyun</id>
<mirrorOf>*</mirrorOf>
<url>http://maven.aliyun.com/nexus/content/groups/public/</url>
</mirror>
<mirror>
<id>neuroph.sourceforge.net</id>
<mirrorOf>*</mirrorOf>
<url>http://neuroph.sourceforge.net/maven2/</url>
</mirror>
</mirrors>
</settings>