${row[7] > 0 ? "正面" : "负面"}
<s:if test="#row[7]>=0"> <font color="blue">正面</font> </s:if> <s:else> <font color="gray">负面</font> </s:else>

${row[7] > 0 ? "正面" : "负面"}
<s:if test="#row[7]>=0"> <font color="blue">正面</font> </s:if> <s:else> <font color="gray">负面</font> </s:else>