maven setting.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>D:\maven\mvrepository</localRepository>

  <pluginGroups>
  </pluginGroups>

  <proxies>
  </proxies>

  <servers>
  </servers>

  <mirrors>
    <mirror>
        <id>nexus-aliyun</id>
        <mirrorOf>central</mirrorOf>
        <name>Nexus aliyun</name>
        <url>http://maven.aliyun.com/nexus/content/groups/public</url>
    </mirror>
  </mirrors>
  <profiles> 
    <profile>
            <id>jdk8</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>
            </properties>
        </profile>
        <profile>  
            <id>custom-compiler</id>  
            <properties>  
                <JAVA8_HOME>C:\Program Files\Java\jdk1.8.0_131\bin</JAVA8_HOME>  
            </properties>  
        </profile>
  </profiles>
</settings>