jsp页面的eval标签的使用

<sf:form action="<%=updateAction%>" role="form" method="post" commandName="b005001Bean" class="form-horizontal">
	<div class="form-group">
		<label class="col-sm-2 control-label"><i class="label_i">*</i>登录名:</label>
		<div class="col-sm-10">
			<p class="form-control-static"><st:eval expression="b005001Bean.username"></st:eval></p>
		</div>
	</div>
</sf:form>

作用：把对应的字符串解析成JS代码并运行