<%@ taglib prefix="image" uri="
http://jakarta.apache.org/taglibs/image-1.0"%>
<%! private Random rand=new Random(System.currentTimeMillis());%>
<%
out.println("request"+request.getParameter("mark"));
out.println("session"+session.getAttribute("mark"));
StringBuffer buffer = new StringBuffer();
for (int i = 0; i < 5; i++)
buffer.append((char) (65 + rand.nextInt(25)));
String mark_code = buffer.toString();
session.setAttribute("mark", mark_code);
out.println(mark_code);
%>
<form name="form1" action="index.jsp" method="POST">
<image:image src="images/mark.jpg" dir="generated"
name="mark.jpg" refresh="true">
<image:text text="<%=mark_code%>" x="15" y="5"
font="Arial" bold="true" italic="true" size="20" />
</image:image>
<input type="text" name="mark">
<input type="submit" value="提交">
</form>
需要支持的Jar文件
pmiw.jar
taglibs-image.jar