jsp页面中格式化为小数点两位

      <td align="center">&nbsp;
<%
String avgnum = "";
if(request.getAttribute("avgnum") != null && !"".equals(request.getAttribute("avgnum"))){
double t = Double.parseDouble((String)request.getAttribute("avgnum"));
java.text.DecimalFormat df = new java.text.DecimalFormat("#.00");
avgnum = df.format(t);
}
%>
<%=avgnum %>
</td>
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