关于数据库连接的问题

Question

package mysqltest;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import org.gjt.mm.mysql.Driver;
import java.io.File;
import java.io.FileInputStream;
/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: </p>
 * @author unascribed
 * @version 1.0
 */public class test {
  /**
    * JDBC URL, initialized from com.mysql.jdbc.testsuite.url
    * system property, or defaults to jdbc:mysql:///test
    */  public test() {
  }
  public static void main(String[] args) {
    Connection conn = null;          try
          {
           File file = new File("c://dd.bmp");
           FileInputStream fis = new FileInputStream(file);
           Object sd = (Object)fis;
           int lenth = 0;
           lenth= (int)file.length();
           Class.forName("org.gjt.mm.mysql.Driver").newInstance();
           String url ="jdbc:mysql://192.168.238.35/mail?useUnicode=true&characterEncoding=gb2312";
           String str = "小dd";
           conn= DriverManager.getConnection(url,"root","");
           PreparedStatement ps = conn.prepareStatement("INSERT INTO test VALUES (?)");
           ps.setString(1,new String(str.getBytes("gb2312")));
        //   ps.setObject(2,sd);
           FileInputStream dsd = (FileInputStream)sd;
           //Statement stat=conn.createStatement();
          // ResultSet rs=stat.executeQuery("select * from custom_folder");
          // System.out.println(rs.next()) ;
           ps.executeUpdate();
           ps.close();
          }
          catch (Exception e)
          {
              e.printStackTrace();
              System.err.println ("Cannot connect to database server");
          }
          finally
          {
              if (conn != null)
              {
                  try
                  {
                      conn.close ();
                      System.out.println ("Database connection terminated");
                  }
                  catch (Exception e) { /* ignore close errors */ }
              }
          }  }
}

Answer 1

import java.sql.*;
import java.io.*;public Example{
    static String driver = "com.microsoft.jdbc.sqlserver.SQLServerDriver";  
    Connection connection;
     
    Class.forName(driver);
    connection = DriverManager.getConnection ("jdbc:microsoft:sqlserver://server1:1433","username","pswd"); 
    
}1.server1 是数据库机器的名字或ip
2.这是针对MS SqlServer 的，并且你要安装 “SQL Server 2000 Driver for JDBC“驱动
3.其它的数据库的话你要修改 driver 和 getConnection() 的参数，具体的网上查吧