import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

/**
 * 數(shù)據(jù)庫連接工具
 * @author 2017
 *
 */
public class DbTool {
 /**
  * 數(shù)據(jù)庫的類
  */
 private static final String ORACLE_DRIVER = "oracle.jdbc.driver.OracleDriver";
 /**
  * 主機(jī)地址和接口
  */
 private static final String URL = "jdbc:oracle:thin:@localhost:1521:XE";
 /**
  * 賬戶
  */
 private static final String USER = "";
 /**
  * 密碼
  */
 private static final String PASSWORD = "";
 /**
  * 數(shù)據(jù)庫的鏈接通道方法-Connection_conn
  * 
  */
 public static Connection getConnection(){
  try {
   //加載oracle數(shù)據(jù)驅(qū)動(dòng)類
   Class.forName(ORACLE_DRIVER);
   //返回?cái)?shù)據(jù)庫通道對象
   return DriverManager.getConnection(URL, USER, PASSWORD);
  } catch (Exception e) {
   // TODO: handle exception
  }
  return null;
  
 }
 
 /**
  * 數(shù)據(jù)庫的釋放資源方法
  * Connection_conn
  * PreparedStatement_ps
  * ResultSet_rs
  */
 public static void close(Connection conn,PreparedStatement ps,ResultSet rs){
  try {
   if (rs!=null) {
    rs.close();
   }
   if (ps!=null) {
    ps.close();
   }
   if (conn!=null) {
    conn.close();
   }
  } catch (Exception e) {
   //打印錯(cuò)誤
   e.printStackTrace();
  }
 }
 /**
  * 數(shù)據(jù)庫的釋放資源方法
  * Connection_conn
  * PreparedStatement_ps
  */
 public static void close(Connection conn,PreparedStatement ps){
  try {
   
   if (ps!=null) {
    ps.close();
   }
   if (conn!=null) {
    conn.close();
   }
  } catch (Exception e) {
   //打印錯(cuò)誤
   e.printStackTrace();
  }
 }
 
}