HTML code:
<%@ page contentType="text/html; charset=GBK" language="java"%>
<%@ page import="java.io.*"%>
<html>
<body>
<form name="form" method="post">
<%
String bb = (String) request.getSession().getAttribute("content");//得到含有图片的字符串
byte[] date = bb.getBytes();
%>
<table>
<tr>
<td>
<%
response.setContentType("image/jpeg");
OutputStream toClient = response.getOutputStream();
InputStream in = new ByteArrayInputStream(date);
int len;
byte[] buf = new byte[1024];
while ((len = in.read(buf, 0, 1024)) != -1) {
toClient.write(buf, 0, len);
}
toClient.close();
%>
</td>
</tr>
</table>
</form>
</body>
</html>
在这个jsp页面中，我从session中将字符串图片取出来并转化为byte[]数据显示在jsp页面中。现在字符串图片数据已经取出来，可显示图片的时候报这个错误：
ERROR 2009-10-13 09:55:47 org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/BOSP].[jsp] Servlet.service() for servlet jsp threw exception
java.lang.IllegalStateException: getOutputStream() has already been c
