<input type="radio" name="${items.xxtx_id}" value="check"
<c:if test="${items.result=='checked'}">
checked="checked"
</c:if>/>是
<input type="radio" name="${items.xxtx_id}" value="unchecked"
<c:if test="${items.result=='unchecked'}">
checked="checked"
</c:if>/>否
Note that there is a problem spaces, pro-test feasible