参考链接：https://github.com/tada/pljava

系统环境

Centos7.6 x86_64

安装java 8

yum install java-1.8.0-openjdk
yum install java-1.8.0-openjdk-devel

下载解压maven

wget http://mirrors.cnnic.cn/apache/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gz 

tar -zxvf apache-maven-3.6.3-bin.tar.gz

./apache-maven-3.6.3/bin/mvn --version
Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
Maven home: /home/postgres/apache-maven-3.6.3