Java에서 임베디드 MySQL을 사용하는 방법

package net.simple.mysql;

import java.io.File;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import com.mysql.management.MysqldResource;

public final class EmbedMySqlServer {
    private MysqldResource mysqlInstance;
    //配置信息
    public final Properties props;
    //端口信息
    private String port;
    /**
     * 考虑到数据库的性能问题,允许将数据库放在其它磁盘
     */
private String embedMySqlHome;
public EmbedMySqlServer(final Properties props) {
     this.props = props;
}
public EmbedMySqlServer(final Properties props, String embedMySqlHome) {
    this.embedMySqlHome = embedMySqlHome;
    this.props = props;
}
public final String getEmbedMySqlHome() {
     return null == embedMySqlHome ? getPlatformBaseDir() : embedMySqlHome;
}
/**
* 获得当前应用主目录
* @return 当前应用启动程序所在目录.
*/
public static String getPlatformBaseDir() {
     return System.getProperty("user.dir");
}
public static boolean isBlank(final String str) {
     int strLen;if (str == null || (strLen = str.length()) == 0) {
     return true;
}
     for (int i = 0; i < strLen; i++) {
        if (Character.isWhitespace(str.charAt(i)) == false) {
        return false;
        }
    }      
      return true;
}
public void startup() {
    final File baseDir = new File(getEmbedMySqlHome(), "mysql-em");
    mysqlInstance = new MysqldResource(baseDir);
    port = props.getProperty("port");
     if (isBlank(port))
        props.put("port", port = String.valueOf((int) (Math.random() * 40000)));
        final Set<Object> keys = props.keySet();
        final Map<String, String> options = new HashMap<String, String>(keys.size());
        for (final Object key : keys) {
        final String val = props.getProperty(key.toString());
        if ("".equals(val))
             options.put(key.toString(), null);
        else
             options.put(key.toString(), val.replace("{$contextPath}", getPlatformBaseDir()));
         }
         if (!mysqlInstance.isRunning())
             mysqlInstance.start("Em_MySQL", options, false, keys.contains("defaults-file"));
         }
         public String getPort() {
            return port;
         }
/**
 * 判断mysql是否正在运行
 */
public boolean isRunning() {
    return null == mysqlInstance ? false : mysqlInstance.isRunning();
}
    public void shutdown() {
        if (mysqlInstance != null)
            mysqlInstance.shutdown();
}
    public void cleanup() {
        if (mysqlInstance != null)
            mysqlInstance.cleanup();
    }
}

public static void main(String[] args) {
   try {
        Properties pro = new Properties();
        //根据机器配置，设置不同的参数
        pro.load(MysqlTest.class.getResourceAsStream("MySql_medium.properties"));
        new EmbedMySqlServer(pro).startup();
         //可以把数据库放到其他磁盘
        //new EmbedMySqlServer(pro,"f:\\").startup();
        Connection conn = getTestConnection();
        System.out.println(conn.isClosed());
       conn.close();
       } catch (Exception e) {
         e.printStackTrace();
      }
}