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src/components/Crud/CRUD.operation.vue

@@ -204,25 +204,39 @@ export default {
           this.showcolumn();
         }, 200)
       }
-
-      //vm.owner.store.commit('insertColumn', columnConfig, newIndex+myindex + 1 , null)
-
-
     },
     showcolumn() {
-      const strHidden = sessionStorage.getItem(this.tableKey)
-      this.hiddenColumns = JSON.parse(strHidden);
-      const table = this.crud.props.table
-      this.hiddenColumns.forEach((column, index) => {
-        const vm = table.$children.find(e => e.prop === column.property)
-        const columnConfig = vm.columnConfig
-        if (column.visible) {
-          columnConfig.width = column.width
-          columnConfig.visible = column.visible
-          vm.owner.store.commit('insertColumn', columnConfig, index + 1, null)
+      try {
+        // 从sessionStorage安全地获取并解析hiddenColumns
+        const strHidden = sessionStorage.getItem(this.tableKey)
+        if (strHidden) {
+          this.hiddenColumns = JSON.parse(strHidden);
+        } else {
+          // 如果没有找到相应的存储信息，可以初始化为空数组或相应的默认值
+          this.hiddenColumns = [];
         }
-      })
-      this.updateTableColumns();
+
+        const table = this.crud.props.table
+        // 优化循环中的条件判断和错误处理
+        this.hiddenColumns.forEach((column, index) => {
+          const vm = table.$children.find(e => e && e.prop === column.property)
+          if (vm) {
+            const columnConfig = vm.columnConfig;
+            // 确保columnConfig存在
+            if (columnConfig) {
+              if (column.visible) {
+                // 仅当列需要显示时，才更新其配置
+                columnConfig.width = column.width;
+                columnConfig.visible = column.visible;
+                vm.owner.store.commit('insertColumn', columnConfig, index + 1, null);
+              }
+            }
+          }
+        });
+        this.updateTableColumns();
+      } catch (error) {
+        console.error("处理列配置时发生错误:", error);
+      }
     },
     //列拖拽
     columnDrop() {