grails run-app appName

| Error
 Resolve error obtaining dependencies: Failed to read artifact descriptor for xalan:serializer:jar:2.7.1 (Use --stacktrace to see the full trace)
| Error
 Required Grails build dependencies were not found. This is normally due to internet connectivity issues (such as a misconfigured proxy) or missing repositories
in grails-app/conf/BuildConfig.groovy. Please verify your configuration to continue.

說明是：

        缺乏jar包。

        查看用戶下的.m2是否存在用戶jar。

        看下網絡是否通。

        用的網絡是經過代理訪問的，要添加代理服務。