macOS 环境下配置 Derby 数据库

打开终端，即 terminal。

创建新的.bash_profile文件（如果有或创建过此文件，跳过此步骤）,输入

touch ~/.bash_profile

打开此文件,输入

open -t ~/.bash_profile

先对环境变量进行解释：

JAVA_HOME: Java的安装路径（决定Java和Javac命令能不能用）；
DERBY_HOME: Derby数据库的安装路径；
PATH: 终端读取的路径（决定java -jar $DERBY_HOME/lib/derbyrun.jar server start能不能用）；
CLASSPATH:class文件的安装路径（决定java org.apache.derby.tools.ij命令能不能用）；

接着继续，在刚打开的文件中添加Derby的环境变量。

export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk-10.0.2.jdk/Contents/Home
export DERBY_HOME=/Library/Java/db-derby-10.14.2.0-bin
export PATH=$JAVA_HOME/bin:$DERBY_HOME:.
export CLASSPATH=$DERBY_HOME/lib/derby.jar:$DERBY_HOME/lib/derbyclient.jar:$DERBY_HOME/lib/derbytools.jar:.

按cmd+s保存文件。 运行文件，使其生效，输入

source  ~/.bash_profile

查看Derby信息，输入

java org.apache.derby.tools.sysinfo

如果弹出以下内容则说明配置成功

------------------ Java 信息 ------------------
Java Version:    10.0.2
Java Vendor:     Oracle Corporation
Java home:       /Library/Java/JavaVirtualMachines/jdk1.8.0.jdk/Contents/Home/jre
Java classpath:  /Users/me/src:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derby.jar:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derby.war:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derbyLocale_cs.jar:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derbyLocale_de_DE.jar:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derbyLocale_es.jar:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derbyLocale_fr.jar:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derbyLocale_hu.jar:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derbyLocale_it.jar:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derbyLocale_ja_JP.jar:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derbyLocale_ko_KR.jar:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derbyLocale_pl.jar:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derbyLocale_pt_BR.jar:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derbyLocale_ru.jar:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derbyLocale_zh_CN.jar:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derbyLocale_zh_TW.jar:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derbyclient.jar:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derbynet.jar:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derbyoptionaltools.jar:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derbyrun.jar:/Users/me/sw/z/db-derby-10.14.2.0-bin/lib/derbytools.jar:/Users/me/sw/db2jcc/lib/db2jcc.jar:/Users/me/sw/db2jcc/lib/db2jcc_license_c.jar:/Users/me/sw/mysql/connectorj/mysql-connector-java-5.0.7/mysql-connector-java-5.0.7-bin.jar:/Users/me/sw/demo/jdbc.concurrent/jars/jdbc-concurrent.jar:/Users/me/sw/demo/tableFunctionWhitePaper/jars/vtis-example.jar
OS name:         Mac OS X
OS architecture: x64_64
OS version:      10.11.5
Java user name:  me
Java user home:  /Users/me
Java user dir:   /Users/me/derby/branches/10.14
java.specification.name: Java Platform API Specification
java.specification.version: 1.8
java.runtime.version: 1.8.0-b132
----------------- Derby 信息 ------------------
[/Library/Java/db-derby-10.14.2.0-bin/lib/derby.jar] 10.14.2.0 - (1828579)
[/Library/Java/db-derby-10.14.2.0-bin/lib/derbytools.jar] 10.14.2.0 - (1828579)
---------------- 区域设置信息 ------------------

接着，启动ij环境，输入

java org.apache.derby.tools.ij

显示如下内容表示启动成功

ij 版本 10.14
ij> 

接着输入

java -jar $DERBY_HOME/lib/derbyrun.jar server start

启动Derby数据库服务器

MacBook:~ apple$ java -jar $DERBY_HOME/lib/derbyrun.jar server start
Fri Oct 05 16:28:00 CST 2018 : 已使用基本服务器安全策略安装了 Security Manager。
Fri Oct 05 16:28:22 CST 2018 : Apache Derby 网络服务器 - 10.14.2.0 - (1828579) 已启动并准备接受端口 1527 上的连接

到这里说明Derby数据库和服务器配置成功啦。