conn.java

对一些文件的上传下载

/**
 * @(#)conn.java
 *
 *
 * @author 
 * @version 1.00 2008/10/8
 *访问数据库的javabean
 *
 */
package download;
import java.sql.*;

public class conn {
	String sDBDriver="sun.jdbc.odbc.JdbcOdbcDriver";
	String sConnStr="jdbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ=C:/Program Files/Apache Group/Tomcat 4.1/webapps/download/download.mdb";
	Connection connect=null;
	ResultSet rs=null;
    public conn() {
    	try{
    		Class.forName(sDBDriver);
    	}
    	catch(java.lang.ClassNotFoundException e){
    		System.err.println(e.getMessage());
    	}
    }
    
    public ResultSet executeQuery(String sql){
    	try{
    		connect=DriverManager.getConnection(sConnStr);
    		Statement stmt=connect.createStatement(ResultSet.TYPE_FORWARD_ONLY,ResultSet.CONCUR_READ_ONLY);
    		rs=stmt.executeQuery(sql);
    	}
    	catch(SQLException ex){
    		System.err.println(ex.getMessage());
    	}
    	return rs;
    }
    public int executeUpdate(String sql){
    	int result=0;
    	try{
    		connect=DriverManager.getConnection(sConnStr);
    		Statement stmt=connect.createStatement();
    		result=stmt.executeUpdate(sql);
    	}
    	catch(SQLException ex){
    		System.out.println(ex.getMessage());
    	}
    	return result;
    }
    
}