dbutil.java

一个很好的使用struts技术的地址簿的例子,很值得

package addressbook.model;

import java.io.*;
import java.sql.*;

/**
 * <strong>DbUtil</strong> is a utility class to create
 * a connection to our sample database.
 */
public class DbUtil {
	static String driverName="com.mysql.jdbc.Driver";
	static String dbUrl="jdbc:mysql://";

public DbUtil() {

}

public static java.sql.Connection connectToDb(String hostName, String databaseName)throws Exception
{
        Connection connection=null;
        String connName = dbUrl + hostName+":3306"+"/"+databaseName;
	Class.forName(driverName).newInstance();
        connection = DriverManager.getConnection(connName);
        return connection;
}

public static java.sql.Connection connectToDb(String databaseName)throws Exception{
	return(connectToDb("localhost", databaseName));
}

public static java.sql.Connection connectToDb()throws Exception{
	return(connectToDb("localhost", "addressbooksample"));
}


}