maven的代理访问
公司设置了代理上网，maven 下载jar包时报：
could not be retrieved from repository:
transferring file:central due to an error: Connection timed out: connect
错误。
解决方案:首先查看IE的代理上网服务器地址。然后修改maven 解压目录的conf下的settings.xml
<proxy> <id>optional</id> <active>true</active> <protocol>http</protocol> <username></username> <password></password> <host>172.X.X.X</host> <port>80</port> <nonProxyHosts>localhost|127.0.0.1</nonProxyHosts> </proxy>
