fix：修改panel页面导入之后不显示的问题

nezha-fronted/src/components/chart/chart/chartTable.vue

@@ -67,7 +67,7 @@ export default {
       }
       this.tableTimer = setTimeout(() => {
         this.columns = this.chartInfo.param.columns
-        this.chartInfo.param.valueMapping.forEach((item) => {
+        this.chartInfo.param.valueMapping && this.chartInfo.param.valueMapping.forEach((item) => {
           if (this.valueMapping[item.column]) {
             this.valueMapping[item.column].push(item)
           } else {

nezha-fronted/src/components/chart/chartMixin.js

@@ -163,7 +163,7 @@ export default {
     },
     selectMapping (value, valueMapping, show) {
       let mapping = ''
-      if (show) {
+      if (show && valueMapping) {
         valueMapping.forEach(item => {
           if (item.type === 'value') {
             if (value == item.value) {

nezha-fronted/src/components/common/rightBox/chart/chartRightBox.vue

@@ -445,7 +445,15 @@ export default {
       deep: true,
       immediate: true,
       handler (n) {
-        this.editChart = JSON.parse(JSON.stringify(n))
+        const obj = JSON.parse(JSON.stringify(n))
+        console.log(obj)
+        if (obj.param && !obj.param.valueMapping) {
+          obj.param.valueMapping = []
+        }
+        if (obj.param && !obj.param.thresholds) {
+          obj.param.thresholds = []
+        }
+        this.editChart = obj
         if (this.editChart.groupId === -1) {
           this.editChart.groupId = ''
         }

nezha-fronted/src/components/page/dashboard/panel.vue

@@ -60,7 +60,7 @@
                 export-file-name="chart"
                 export-url="/visual/panel/export"
                 import-url="/visual/panel/import"
-                @afterImport="dateChange"
+                @afterImport="afterImport"
               >
                 <template v-slot:before>
                   <el-dropdown-item>
@@ -812,6 +812,10 @@ export default {
       if (type === 'duplicate') {
         this.editChart(chartInfo, true)
       }
+    },
+    afterImport () {
+      this.dateChange()
+      this.panelReloadOnlyPanel()
     }
   },
   created () {