jsp中由textarea提交的文本自动换行
<td>
<div style="width: 680px; word-wrap: break-word; margin: 5 auto; line-height: 22px;">
<c:set var="content" value="${obj.content}" scope="request" />
<%=request.getAttribute("content").toString() .replaceAll("\r\n", "<br />")%>
</div>
</td>