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<object class="org.apache.commons.dbcp.PoolableConnectionFactory"
        xmlns="http://apache.org/xml/xmlns/jakarta/commons/jocl">
    <object class="org.apache.commons.dbcp.DriverManagerConnectionFactory">
        <string value="jdbc:oracle:thin:@127.0.0.1:1521:XE" />
        <string value="user01" />
        <string value="user01" />
    </object>
   
    <object class="org.apache.commons.pool.impl.GenericObjectPool">
        <object class="org.apache.commons.pool.PoolableObjectFactory" null="true" />
        <int value="10" />
        <byte value="1" />
        <long value="10000" />
        <int value="10" />
        <int value="3" />
        <boolean value="true" />
        <boolean value="true" />
        <long value="600000" />
        <int value="5" />
        <long value="3600000" />
        <boolean value="true" />
    </object>
   
    <object class="org.apache.commons.pool.impl.GenericKeyedObjectPoolFactory"
            null="true" />
   
    <string null="true" />
   
    <boolean value="false" />
   
    <boolean value="true" />
</object>

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class BasicDAO {
 
 private static final String BASIC_DRIVER = "oracle.jdbc.driver.OracleDriver";
 
 private static final String DRIVER = "org.apache.commons.dbcp.PoolingDriver";
 
 private static final String URL = "jdbc:apache:commons:dbcp:/db"; //db는 설정 파일의 이름 나중에 설정을 바꾸고 싶으면 다른 걸 만들어서 넣는다.
 
 static{
  try {
   Class.forName(BASIC_DRIVER);
   Class.forName(DRIVER);
  } catch (ClassNotFoundException e) {
   e.printStackTrace();
  }
 }
 
 public Connection getConnection() throws SQLException{
 
  Connection con = null;
  
  con = DriverManager.getConnection(URL);
  
  return con;
  
 }
}