Maven忽略用户settings.xml中的localRepository设置

Question

在我的用户的settings.xml文件中，我遇到了一个Maven没有遵守<localRepository>值的问题。

我的环境是一个使用Chef配置的Vagrant实例。我已经使用厨师Maven cookbook安装了Maven。

Maven运行得很好，只是它忽略了我在ssh用户的settings.xml中定义的本地存储库：

vagrant@vagrant-ubuntu-trusty-64:/vagrant$ cat ~/.m2/settings.xml 
<?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">

  <localRepository>/vagrant/.m2/repository</localRepository>

</settings>

正如您所看到的，我试图通过将Maven local repository作为子目录放在由主机OS和来宾操作系统共享的文件夹下，从而在主机OS和来宾操作系统之间共享本地存储库：/vagrant/.m2/repository

但是，当我在设置了调试选项的情况下运行maven时：mvn -X Maven通知我它正在正确地读取settings.xml文件，但是由于某些原因，它没有正确地设置本地存储库：

vagrant@vagrant-ubuntu-trusty-64:/vagrant$ mvn -X
Apache Maven 3.3.9 (bb52d8502b132ec0a5a3f4c09453c07478323dc5; 2015-11-10T16:41:47+00:00)
Maven home: /usr/local/maven
Java version: 1.8.0_65, vendor: Oracle Corporation
Java home: /usr/lib/jvm/jdk1.8.0_65/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "3.13.0-85-generic", arch: "amd64", family: "unix"
[DEBUG] Created new class realm maven.api
[DEBUG] Importing foreign packages into class realm maven.api
[DEBUG]   Imported: javax.enterprise.inject.* < plexus.core
[DEBUG]   Imported: javax.enterprise.util.* < plexus.core
[DEBUG]   Imported: javax.inject.* < plexus.core
[DEBUG]   Imported: org.apache.maven.* < plexus.core
[DEBUG]   Imported: org.apache.maven.artifact < plexus.core
[DEBUG]   Imported: org.apache.maven.classrealm < plexus.core
[DEBUG]   Imported: org.apache.maven.cli < plexus.core
[DEBUG]   Imported: org.apache.maven.configuration < plexus.core
[DEBUG]   Imported: org.apache.maven.exception < plexus.core
[DEBUG]   Imported: org.apache.maven.execution < plexus.core
[DEBUG]   Imported: org.apache.maven.execution.scope < plexus.core
[DEBUG]   Imported: org.apache.maven.lifecycle < plexus.core
[DEBUG]   Imported: org.apache.maven.model < plexus.core
[DEBUG]   Imported: org.apache.maven.monitor < plexus.core
[DEBUG]   Imported: org.apache.maven.plugin < plexus.core
[DEBUG]   Imported: org.apache.maven.profiles < plexus.core
[DEBUG]   Imported: org.apache.maven.project < plexus.core
[DEBUG]   Imported: org.apache.maven.reporting < plexus.core
[DEBUG]   Imported: org.apache.maven.repository < plexus.core
[DEBUG]   Imported: org.apache.maven.rtinfo < plexus.core
[DEBUG]   Imported: org.apache.maven.settings < plexus.core
[DEBUG]   Imported: org.apache.maven.toolchain < plexus.core
[DEBUG]   Imported: org.apache.maven.usability < plexus.core
[DEBUG]   Imported: org.apache.maven.wagon.* < plexus.core
[DEBUG]   Imported: org.apache.maven.wagon.authentication < plexus.core
[DEBUG]   Imported: org.apache.maven.wagon.authorization < plexus.core
[DEBUG]   Imported: org.apache.maven.wagon.events < plexus.core
[DEBUG]   Imported: org.apache.maven.wagon.observers < plexus.core
[DEBUG]   Imported: org.apache.maven.wagon.proxy < plexus.core
[DEBUG]   Imported: org.apache.maven.wagon.repository < plexus.core
[DEBUG]   Imported: org.apache.maven.wagon.resource < plexus.core
[DEBUG]   Imported: org.codehaus.classworlds < plexus.core
[DEBUG]   Imported: org.codehaus.plexus.* < plexus.core
[DEBUG]   Imported: org.codehaus.plexus.classworlds < plexus.core
[DEBUG]   Imported: org.codehaus.plexus.component < plexus.core
[DEBUG]   Imported: org.codehaus.plexus.configuration < plexus.core
[DEBUG]   Imported: org.codehaus.plexus.container < plexus.core
[DEBUG]   Imported: org.codehaus.plexus.context < plexus.core
[DEBUG]   Imported: org.codehaus.plexus.lifecycle < plexus.core
[DEBUG]   Imported: org.codehaus.plexus.logging < plexus.core
[DEBUG]   Imported: org.codehaus.plexus.personality < plexus.core
[DEBUG]   Imported: org.codehaus.plexus.util.xml.Xpp3Dom < plexus.core
[DEBUG]   Imported: org.codehaus.plexus.util.xml.pull.XmlPullParser < plexus.core
[DEBUG]   Imported: org.codehaus.plexus.util.xml.pull.XmlPullParserException < plexus.core
[DEBUG]   Imported: org.codehaus.plexus.util.xml.pull.XmlSerializer < plexus.core
[DEBUG]   Imported: org.eclipse.aether.* < plexus.core
[DEBUG]   Imported: org.eclipse.aether.artifact < plexus.core
[DEBUG]   Imported: org.eclipse.aether.collection < plexus.core
[DEBUG]   Imported: org.eclipse.aether.deployment < plexus.core
[DEBUG]   Imported: org.eclipse.aether.graph < plexus.core
[DEBUG]   Imported: org.eclipse.aether.impl < plexus.core
[DEBUG]   Imported: org.eclipse.aether.installation < plexus.core
[DEBUG]   Imported: org.eclipse.aether.internal.impl < plexus.core
[DEBUG]   Imported: org.eclipse.aether.metadata < plexus.core
[DEBUG]   Imported: org.eclipse.aether.repository < plexus.core
[DEBUG]   Imported: org.eclipse.aether.resolution < plexus.core
[DEBUG]   Imported: org.eclipse.aether.spi < plexus.core
[DEBUG]   Imported: org.eclipse.aether.transfer < plexus.core
[DEBUG]   Imported: org.eclipse.aether.version < plexus.core
[DEBUG]   Imported: org.slf4j.* < plexus.core
[DEBUG]   Imported: org.slf4j.helpers.* < plexus.core
[DEBUG]   Imported: org.slf4j.spi.* < plexus.core
[DEBUG] Populating class realm maven.api
[INFO] Error stacktraces are turned on.
[DEBUG] Reading global settings from /usr/local/maven/conf/settings.xml
[DEBUG] Reading user settings from /home/vagrant/.m2/settings.xml
[DEBUG] Reading global toolchains from /usr/local/maven/conf/toolchains.xml
[DEBUG] Reading user toolchains from /home/vagrant/.m2/toolchains.xml
[DEBUG] Using local repository at /home/vagrant/.m2/repository
[DEBUG] Using manager EnhancedLocalRepositoryManager with priority 10.0 for /home/vagrant/.m2/repository

Maven错误地将本地存储库设置为默认/home/vagrant/.m2/repository。

我不认为在来宾操作系统和主机操作系统之间共享/vagrant文件夹是一个问题，因为运行mvn -Dmaven.repo.local=/vagrant/.m2/repository可以正常工作。

在这种情况下，为什么Maven不能正确读取或解释用户的settings.xml文件，有什么原因吗？

Answer 1

像往常一样，解释这个问题会让我走上寻找答案的道路。对于任何偶然发现这篇文章的人来说，问题是Chef Maven Cookbook有一个默认属性node['maven']['mavenrc']['opts']，该属性将/etc/mavenrc/的值设置为-Dmaven.repo.local=$HOME/.m2/repository -Xmx384m (从Cookbook的2.2.0版本开始)。这覆盖了我在用户的settings.xml文件中执行的本地存储库的所有配置。

为了解决这个问题，我在菜谱的默认属性文件attributes/default.rb中将该属性的默认值更改为default[maven][mavenrc][opts] = ''