JSP 读取 SQL Server 2000 中 image 型数据生成图片文件

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<%@ page language="java" import="java.sql.*,java.io.*"
pageEncoding="GBK"%>
<%
    //建立连接对象
    Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver")
            .newInstance();
    String url = "jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=test", user = "sa", password = "sa";
    Connection conn = DriverManager.getConnection(url, user, password);
    Statement stmt = conn.createStatement();
    ResultSet rs;
    String strSql = "select id, data FROM test";
    InputStream in = null;
    FileOutputStream fileOutStream = null;
    rs = stmt.executeQuery(strSql);
    while (rs.next())
    {
        //Windows 系统下存储路径用2个反斜杠
        DataOutputStream sos = new DataOutputStream(
                new BufferedOutputStream(new FileOutputStream("c:\\"
                        + rs.getString("id") + ".jpg")));
        //读出流用getBinaryStream()方法。  
        in = rs.getBinaryStream("data");
        //用缓存数组逐渐输出流
        int len = 0;
        byte[] b = new byte[1024];
        while ((len = in.read(b)) != -1)
        {
            sos.write(b, 0, len);
        }
        sos.close();
        in.close();
    }
    rs.close();
    conn.close();
%>