mvn install时部分包下载失败：
[INFO] Downloading https://nodejs.org/dist/v12.13.0/win-x64/node.exe to C:\myfile\mvnjar\com\github\eirslett\node\12.13.0\node-12.13.0-win-x64.exe
[INFO] No proxies configured
[INFO] No proxy was configured, downloading directly
1.要么配置一下代理，重新执行就好了
2.要么手动下载链接文件，放到对应的目录里
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