Js实现的,验证码重新加载
Js:

<script type="text/javascript">function reloadcode(){var verify=document.getElementById('safecode');verify.setAttribute('src','image.jsp?'+Math.random());//这里必须加入随机数不然地址相同我发重新加载}</script>HTML:<img id="safecode" border="0" onclick="reloadcode()" src="image.jsp">