settings.xml

          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">

            baijia

            *

            http://172.30.0.238:8081/nexus/content/groups/public/

            default

                    public

                    http://172.30.0.238:8081/nexus/content/groups/public/

                        true

                        true

        default

172.30.0.238:8081/nexus/content/groups/public/  替换成私服地址阿里云的地址：

http://maven.aliyun.com/nexus/content/groups/public

setting.xml  在linux 服务器mvn的安装路径下的conf下

mvn命令可以在jenkins的  global config tool   configuration 中自定义mvn的命令