优化

src/pages/stateAccountList/index.vue

 <template>
 <!-- uooya对账单定制 -->
   <div class="statementAccount">
-    <div class="stateList" v-for="(item,index) in list" :key="index">
-      <div class="dateHeader">
-        <p>{{item.year}}</p>
-      </div>
-      <div class="monthList flex flex-cen flex-btw van-hairline--bottom" v-for="(monthItem,index1) in item.month" :key="index1">
-        <div class="state">{{monthItem}}月账单</div>
-        <van-button @click="downloadPdf(item.year + monthItem)">下载</van-button>
+    <div v-if="list && list.length>0">
+      <div class="stateList"   v-for="(item,index) in list" :key="index">
+        <div class="dateHeader">
+          <p>{{item.year}}</p>
+        </div>
+        <div class="monthList flex flex-cen flex-btw van-hairline--bottom" v-for="(monthItem,index1) in item.month" :key="index1">
+          <div class="state">{{monthItem}}月账单</div>
+          <van-button @click="downloadPdf(item.year + monthItem)">下载</van-button>
+        </div>
       </div>
     </div>
+    <div v-else style="margin:20px auto;font-size:14px;text-align:center">暂无数据</div>
   </div>
 </template>