全面好用的setting.xml配置

<?xml version="1.0" encoding="UTF-8"?>

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<!-- | This is the configuration file for Maven. It can be specified at two 
    levels: | | 1. User Level. This settings.xml file provides configuration 
    for a single user, | and is normally provided in ${user.home}/.m2/settings.xml. 
    | | NOTE: This location can be overridden with the CLI option: | | -s /path/to/user/settings.xml 
    | | 2. Global Level. This settings.xml file provides configuration for all 
    Maven | users on a machine (assuming they're all using the same Maven | installation). 
    It's normally provided in | ${maven.conf}/settings.xml. | | NOTE: This location 
    can be overridden with the CLI option: | | -gs /path/to/global/settings.xml 
    | | The sections in this sample file are intended to give you a running start 
    at | getting the most out of your Maven installation. Where appropriate, 
    the default | values (values used when the setting is not specified) are 
    provided. | | -->
<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 | The path to the local repository maven will use to 
        store artifacts. | | Default: ${user.home}/.m2/repository <localRepository>/path/to/local/repo</localRepository> -->

    <!-- interactiveMode | This will determine whether maven prompts you when 
        it needs input. If set to false, | maven will use a sensible default value, 
        perhaps based on some other setting, for | the parameter in question. | | 
        Default: true <interactiveMode>true</interactiveMode> -->

    <!-- offline | Determines whether maven should attempt to connect to the 
        network when executing a build. | This will have an effect on artifact downloads, 
        artifact deployment, and others. | | Default: false <offline>false</offline> -->

    <!-- pluginGroups | This is a list of additional group identifiers that 
        will be searched when resolving plugins by their prefix, i.e. | when invoking 
        a command line like "mvn prefix:goal". Maven will automatically add the group 
        identifiers | "org.apache.maven.plugins" and "org.codehaus.mojo" if these 
        are not already contained in the list. | -->
    <pluginGroups>
        <!-- pluginGroup | Specifies a further group identifier to use for plugin 
            lookup. <pluginGroup>com.your.plugins</pluginGroup> -->
    </pluginGroups>

    <!-- proxies | This is a list of proxies which can be used on this machine 
        to connect to the network. | Unless otherwise specified (by system property 
        or command-line switch), the first proxy | specification in this list marked 
        as active will be used. | -->
    <proxies>
        <!-- proxy | Specification for one proxy, to be used in connecting to the 
            network. | <proxy> <id>optional</id> <active>true</active> <protocol>http</protocol> 
            <username>proxyuser</username> <password>proxypass</password> <host>proxy.host.net</host> 
            <port>80</port> <nonProxyHosts>local.net|some.host.com</nonProxyHosts> </proxy> -->
    </proxies>

    <!-- servers | This is a list of authentication profiles, keyed by the server-id 
        used within the system. | Authentication profiles can be used whenever maven 
        must make a connection to a remote server. | -->
    <servers>
        <!-- server | Specifies the authentication information to use when connecting 
            to a particular server, identified by | a unique name within the system (referred 
            to by the 'id' attribute below). | | NOTE: You should either specify username/password 
            OR privateKey/passphrase, since these pairings are | used together. | <server> 
            <id>deploymentRepo</id> <username>repouser</username> <password>repopwd</password> 
            </server> -->

        <!-- Another sample, using keys to authenticate. <server> <id>siteServer</id> 
            <privateKey>/path/to/private/key</privateKey> <passphrase>optional; leave 
            empty if not used.</passphrase> </server> -->
    </servers>

    <!-- mirrors | This is a list of mirrors to be used in downloading artifacts 
        from remote repositories. | | It works like this: a POM may declare a repository 
        to use in resolving certain artifacts. | However, this repository may have 
        problems with heavy traffic at times, so people have mirrored | it to several 
        places. | | That repository definition will have a unique id, so we can create 
        a mirror reference for that | repository, to be used as an alternate download 
        site. The mirror site will be the preferred | server for that repository. 
        | -->
    <mirrors>
        <!-- mirror | Specifies a repository mirror site to use instead of a given 
            repository. The repository that | this mirror serves has an ID that matches 
            the mirrorOf element of this mirror. IDs are used | for inheritance and direct 
            lookup purposes, and must be unique across the set of mirrors. | <mirror> 
            <id>mirrorId</id> <mirrorOf>repositoryId</mirrorOf> <name>Human Readable 
            Name for this Mirror.</name> <url>http://my.repository.com/repo/path</url> 
            </mirror> -->

        <!-- 阿里镜像 -->
        <mirror>
            <id>alimaven</id>
            <mirrorOf>central</mirrorOf>
            <name>aliyun maven</name>
            <url>http://maven.aliyun.com/nexus/content/repositories/central/</url>
        </mirror>
        <mirror>
            <id>alimaven</id>
            <name>aliyun maven</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
            <mirrorOf>central</mirrorOf>
        </mirror>
        <mirror>
            <id>central</id>
            <name>Maven Repository Switchboard</name>
            <url>http://repo1.maven.org/maven2/</url>
            <mirrorOf>central</mirrorOf>
        </mirror>
        <mirror>
            <id>repo2</id>
            <mirrorOf>central</mirrorOf>
            <name>Human Readable Name for this Mirror.</name>
            <url>http://repo2.maven.org/maven2/</url>
        </mirror>
        <mirror>
            <id>ibiblio</id>
            <mirrorOf>central</mirrorOf>
            <name>Human Readable Name for this Mirror.</name>
            <url>http://mirrors.ibiblio.org/pub/mirrors/maven2/</url>
        </mirror>
        <mirror>
            <id>jboss-public-repository-group</id>
            <mirrorOf>central</mirrorOf>
            <name>JBoss Public Repository Group</name>
            <url>http://repository.jboss.org/nexus/content/groups/public</url>
        </mirror>
        <mirror>
            <id>google-maven-central</id>
            <name>Google Maven Central</name>
            <url>https://maven-central.storage.googleapis.com
            </url>
            <mirrorOf>central</mirrorOf>
        </mirror>
        <!-- 中央仓库在中国的镜像 -->
        <mirror>
            <id>maven.net.cn</id>
            <name>oneof the central mirrors in china</name>
            <url>http://maven.net.cn/content/groups/public/</url>
            <mirrorOf>central</mirrorOf>
        </mirror>

    </mirrors>

    <!-- profiles | This is a list of profiles which can be activated in a variety 
        of ways, and which can modify | the build process. Profiles provided in the 
        settings.xml are intended to provide local machine- | specific paths and 
        repository locations which allow the build to work in the local environment. 
        | | For example, if you have an integration testing plugin - like cactus 
        - that needs to know where | your Tomcat instance is installed, you can provide 
        a variable here such that the variable is | dereferenced during the build 
        process to configure the cactus plugin. | | As noted above, profiles can 
        be activated in a variety of ways. One way - the activeProfiles | section 
        of this document (settings.xml) - will be discussed later. Another way essentially 
        | relies on the detection of a system property, either matching a particular 
        value for the property, | or merely testing its existence. Profiles can also 
        be activated by JDK version prefix, where a | value of '1.4' might activate 
        a profile when the build is executed on a JDK version of '1.4.2_07'. | Finally, 
        the list of active profiles can be specified directly from the command line. 
        | | NOTE: For profiles defined in the settings.xml, you are restricted to 
        specifying only artifact | repositories, plugin repositories, and free-form 
        properties to be used as configuration | variables for plugins in the POM. 
        | | -->
    <profiles>
        <!-- profile | Specifies a set of introductions to the build process, to 
            be activated using one or more of the | mechanisms described above. For inheritance 
            purposes, and to activate profiles via <activatedProfiles/> | or the command 
            line, profiles have to have an ID that is unique. | | An encouraged best 
            practice for profile identification is to use a consistent naming convention 
            | for profiles, such as 'env-dev', 'env-test', 'env-production', 'user-jdcasey', 
            'user-brett', etc. | This will make it more intuitive to understand what 
            the set of introduced profiles is attempting | to accomplish, particularly 
            when you only have a list of profile id's for debug. | | This profile example 
            uses the JDK version to trigger activation, and provides a JDK-specific repo. 
            <profile> <id>jdk-1.4</id> <activation> <jdk>1.4</jdk> </activation> <repositories> 
            <repository> <id>jdk14</id> <name>Repository for JDK 1.4 builds</name> <url>http://www.myhost.com/maven/jdk14</url> 
            <layout>default</layout> <snapshotPolicy>always</snapshotPolicy> </repository> 
            </repositories> </profile> -->

        <profile>
            <id>jdk18</id>
            <activation>
                <activeByDefault>true</activeByDefault>
                <jdk>1.8</jdk>
            </activation>

            <properties>
                <maven.compiler.source>1.8</maven.compiler.source>
                <maven.compiler.target>1.8</maven.compiler.target>
                <maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>
                <downloadSources>true</downloadSources>
                <downloadJavadocs>true</downloadJavadocs>
            </properties>
        </profile>
        <!-- <properties> <downloadSources>true</downloadSources> <downloadJavadocs>true</downloadJavadocs> 
            </properties> -->

        <!-- | Here is another profile, activated by the system property 'target-env' 
            with a value of 'dev', | which provides a specific path to the Tomcat instance. 
            To use this, your plugin configuration | might hypothetically look like: 
            | | ... | <plugin> | <groupId>org.myco.myplugins</groupId> | <artifactId>myplugin</artifactId> 
            | | <configuration> | <tomcatLocation>${tomcatPath}</tomcatLocation> | </configuration> 
            | </plugin> | ... | | NOTE: If you just wanted to inject this configuration 
            whenever someone set 'target-env' to | anything, you could just leave off 
            the <value/> inside the activation-property. | <profile> <id>env-dev</id> 
            <activation> <property> <name>target-env</name> <value>dev</value> </property> 
            </activation> <properties> <tomcatPath>/path/to/tomcat/instance</tomcatPath> 
            </properties> </profile> -->
    </profiles>

    <!-- activeProfiles | List of profiles that are active for all builds. | 
        <activeProfiles> <activeProfile>alwaysActiveProfile</activeProfile> <activeProfile>anotherAlwaysActiveProfile</activeProfile> 
        </activeProfiles> -->
</settings>