从库中读图片显示到页面上的主要源码

<%@ page contentType="text/html;charset=iso8859_1"%>

<%@ page import="java.sql.ResultSet"%>

<jsp:useBean id="query" class="pub.MakeDB"/>

<%

String sql = "select * from images";

ResultSet rs = query.executeQuery(sql);

rs.next();

InputStream in = rs.getBinaryStream("image");

ServletOutputStream sos = response.getOutputStream();

int len = 0;

byte[] b = new byte[1024];

response.reset();

response.setContentType("image/gif");

while((len = in.read(b)) > 0)

sos.write(b,0,len);

in.close();

sos.close();

query.cls();

%>

如果是写到文件只要把sos

定义为DataOutputStream sos = new DataOutputStream(new BufferedOutputStream(new FileOutputStream("/a.gif")));