环境准备

apache-maven-3.3.9
http://maven.apache.org/download.cgi
apache-tomcat-8.5.20
http://tomcat.apache.org/download-80.cgi
eclipse-jee-neon-3
https://www.eclipse.org/downloads/eclipse-packages/
jdk1.8.0_131
http://www.oracle.com/technetwork/java/javase/downloads/jdk-netbeans-jsp-142931.html

Maven基本配置修改 setting.xml 文件

apache-tomcat-8.5.20/conf/settings.xml

1.仓库本地存储位置

本地仓库位置

2.配置阿里云国内的中央仓库，提升下载速度 mirrors 节点内

<mirror>
        <!-- 配置 阿里云 maven 镜像仓库，提升国内下载速度 -->
        <id>alimaven</id>
            <mirrorOf>central</mirrorOf>
            <name>aliyun maven</name>
            <url>http://maven.aliyun.com/nexus/content/repositories/central/</url>
        </mirror>
    
        <mirror>
            <id>repo1</id>
            <mirrorOf>central</mirrorOf>
            <name>Human Readable Name for this Mirror.</name>
            <url>http://repo1.maven.org/maven2/</url>
        </mirror>
    
        <mirror>
            <id>repo2</id>
            <mirrorOf>central</mirrorOf>
            <name>Human Readable Name for this Mirror.</name>
            <url>http://repo2.maven.org/maven2/</url>
        </mirror>
  </mirrors>

阿里云maven镜像

3.配置编译时的jdk版本，可以在这里配置全局，也可以根据项目配置 profiles 节点内

<profile>
    <!-- 配置全局的jdk -->
        <id>jdk1.8</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>