dataconn.java

绝对很好的jsp学习资料

package dataconn;
import java.sql.*;

public class  dataconn{
	
	String sConnStr = "jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=data_2007";
	String user="sa"; 
	String password="sa"; 
	Connection conn = null;
	Statement stmt = null;
	ResultSet rs = null;

		public dataconn() {
		try {
			Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver"); 
			}
		catch(java.lang.ClassNotFoundException e) {
			System.err.println("news_conn(): " + e.getMessage());
		}
		}

		public ResultSet executeQuery(String sql) {
			rs = null;
			try {
				conn = DriverManager.getConnection(sConnStr,user,password); 
				stmt = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
				rs = stmt.executeQuery(sql);
				} 
			catch(SQLException ex) { 
				System.err.println("aq.executeQuery: " + ex.getMessage());
				System.err.println("aq.executeQuerystrSQL: " + sql);
			}
			return rs;
		}
		
		
		public void executeUpdate(String sql) {
		try {
			conn = DriverManager.getConnection(sConnStr,user,password); 
			stmt = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
			stmt.executeUpdate(sql);
			} 
		catch(SQLException ex) { 
			System.err.println("aq.executeUpdate: " + ex.getMessage());
			System.err.println("aq.executeUpadatestrSQL: " + sql);
			}
		}
		
public void closeStmt()
	{
		try{
			stmt.close();
		   }
		catch(SQLException e){
			e.printStackTrace();
		   }
	}

	
	public void closeConn()
	{
		try{
			conn.close();
		   }
		catch(SQLException e){
			e.printStackTrace();
		   }
	}

}