jsp代码实例第242课

code242.java

package pack06;

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

//模拟JDBCUtils类
public class code242
{
  public static Connection getConnection() throws SQLException,ClassNotFoundException
  {
    Class.forName("com.mysql.jdbc.Driver");
    String url = "jdbc:mysql://localhost:3306/test";
    String user = "root";
    String pwd = "mysql123";
    Connection conn = DriverManager.getConnection(url,user,pwd);
    return conn;
  }

  public static void release(Statement stmt,Connection conn)
  {
    if (stmt != null)
    {
      try
      {
        stmt.close();
      } catch (SQLException e)
      {
        e.printStackTrace();
      }
      stmt = null;
    }
    if (conn != null)
    {
      try
      {
        conn.close();
      } catch (SQLException e)
      {
        e.printStackTrace();
      }
      conn = null;
    }
  }

  public static void release(ResultSet rs,Statement stmt,Connection conn)
  {
    if (rs != null)
    {
      try
      {
        rs.close();

      } catch (SQLException e)
      {
        e.printStackTrace();
      }

      rs = null;
    }
    release(stmt, conn);
  }
}