江河统计导出修改

src/views/water/river-station/statistic/site-day-avg.vue

@@ -47,6 +47,7 @@
 </template>
 
 <script>
+  import moment from "moment";
   import {
     // autonomyWaterFunctionTotalUrl,
     listWaterSiteMonthTotal
@@ -324,17 +325,54 @@
       },
       /* 导出 */
       exportFile() {
-        const columns = this.columns.filter(item => item.dataIndex);
         const arr = [];
-        const th = columns.map((item) => item.title);
-        arr.push(th);
-        this.data.forEach((d) => {
-          const td = columns.map((item) => d[item.dataIndex]);
+        const th1 = [];
+        const th2 = [];
+        const merges = []; // 合并
+        const columnsTemp = []; // 树形结构整理成list
+        this.columns.forEach((item, index) => {
+          if (item.children) {
+            item.children.forEach((citem) => {
+              th1.push(item.title)
+              th2.push(citem.title)
+              columnsTemp.push(citem)
+            })
+            merges.push({
+              s: {
+                r: 0,
+                c: th1.length - item.children.length
+              },
+              e: {
+                r: 0,
+                c: th1.length - 1
+              }
+            })
+          } else {
+            th1.push(item.title)
+            th2.push("")
+            columnsTemp.push(item)
+            merges.push({
+              s: {
+                r: 0,
+                c: index
+              },
+              e: {
+                r: 1,
+                c: index
+              }
+            })
+          }
+        })
+        arr.push(th1, th2);
+        this.datasource.forEach((d) => {
+          const td = columnsTemp.map((item) => d[item.dataIndex]);
           arr.push(td);
         });
-
         let sheet = XLSX.utils.aoa_to_sheet(arr);
-        this.$util.exportSheet(XLSX, sheet, new Date().getTime().toString());
+        sheet['!merges'] = merges;
+        this.$util.exportSheet(XLSX, sheet, moment(this.where.timeStart).format("YYYY年MM月DD日") + "至" + moment(this.where
+          .timeEnd).format("YYYY年MM月DD日") + "统计数据");
+
       }
 
     },