db.java

jsp+Struts1.2+Hibernate3.1+mysql

package bbs.db;

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

public class DB {
	Connection conn = null;

	ResultSet rs = null;

	public DB() {
		try {
			Class.forName("org.gjt.mm.mysql.Driver");
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	public ResultSet query(String sql) {
		try {
			conn = DriverManager.getConnection(					
					"jdbc:mysql://localhost:3306/test", "root", "root");
			conn.setAutoCommit(true);
			Statement stmt = conn.createStatement(
					ResultSet.TYPE_SCROLL_INSENSITIVE,
					ResultSet.CONCUR_READ_ONLY);
			rs = stmt.executeQuery(sql);
			
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return rs;
	}

	public int update(String sql) {
		int result = 0;
		try {
			conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/test",
					"root", "root");
			conn.setAutoCommit(true);
			Statement stmt = conn.createStatement();
			result = stmt.executeUpdate(sql);
			
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return result;
	}
	
	public void close ()
	{
		if (conn != null)
		{
			try {
				conn.close();
				conn = null ;
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			
		}
	}

}