步骤：
1. 用<pre><c:out value="<%=从数据库显示的字段%>"></c:out></pre>
2. 显示页面中增加：
复制代码 代码如下:
<style type="text/css">
pre {
white-space: pre-wrap;
white-space: -moz-pre-wrap;
white-space: -pre-wrap;
white-space: -o-pre-wrap;
word-wrap: break-word;
}
</style>
<style type="text/css">
pre {
white-space: pre-wrap;
white-space: -moz-pre-wrap;
white-space: -pre-wrap;
white-space: -o-pre-wrap;
word-wrap: break-word;
}
</style>
