首先从官方网站下载maven,jdk和tomcat
通过之前的一篇文章，开发环境下可以直接讲路径写入/etc/profile，执行以下指令即可
echo ‘#set Java environment‘>>/etc/profile
echo ‘export JAVA_HOME=/root/jdk1.8.0_241‘>>/etc/profile # 将java的目录改为自己系统上java的目录
echo ‘export PATH=$JAVA_HOME/bin:$PATH‘>>/etc/profile
echo ‘export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar‘>>/etc/profile
echo ‘#set Tomcat environment‘>>/etc/profile
echo ‘export CATALINA_HOME=/root/apache-tomcat-8.5.53‘>>/etc/profile # 将tomcat的目录改为自己系统上tomcat的目录
echo ‘export PATH=$JAVA_HOME/bin:$CATALINA_HOME/bin:$PATH‘>>/etc/profile
echo ‘export CLASSPATH=.:$JAVA_HOME/lib:$CATALINA_HOME/lib‘>>/etc/profile
echo ‘#set Maven environment‘>>/etc/profile
echo ‘export MAVEN_HOME=/root/apache-maven-3.6.3‘>>/etc/profile # 将maven的目录改为自己系统上maven的目录
echo ‘export PATH=$MAVEN_HOME/bin:$PATH‘>>/etc/profile
source /etc/profile
编辑maven文件夹下的conf文件夹中的setting.xml
vim /root/apache-maven-3.6.3/conf/settings.xml
大约在135行
<mirror>
<id>alimaven</id>
<mirrorOf>central</mirrorOf>
<name>aliyun maven</name>
<url>https://maven.aliyun.com/nexus/content/groups/public</url>
</mirror>
阿里云Maven镜像文档
https://help.aliyun.com/document_detail/102512.html?spm=a2c4e.11153940.0.0.213c7bdemo7OSM
还没用到，用到了，学一下怎么做
Maven中SpringFrameWork部分的导包文档
application.yml
Failed to configure a DataSource: ‘url‘ attribute is not specified and no embedded datasource could be configured.
热部署
原文：https://www.cnblogs.com/YC-L/p/12621342.html