fix: 增加或删除数据源，只有一条数据时操作完需要刷新页面才会更新

frontend/src/views/system/datasource/DsTree.vue

@@ -140,14 +140,26 @@ export default {
       let typeData = []
       listDatasourceByType(datasource.type).then(res => {
         typeData = this.buildTree(res.data)
-        for (let index = 0; index < this.tData.length; index++) {
-          if (typeData[0].id === this.tData[index].id) {
-            this.tData[index].children = typeData[0].children
+        if(typeData.length === 0){
+          let index = this.tData.findIndex(item => {
+            if ( item.id === datasource.type) {
+              return true;
+            }
+          })
+          this.tData.splice(index,1)
+        }else {
+          let find = false;
+          for (let index = 0; index < this.tData.length; index++) {
+            if (typeData[0].id === this.tData[index].id) {
+              this.tData[index].children = typeData[0].children
+              find = true
+            }
+          }
+          if(!find){
+            this.tData.push(typeData[0])
           }
         }
       })
-
-
     },
     buildTree(array) {
       const types = {}