refactor: 优化数据源删除提示信息

backend/src/main/java/io/dataease/controller/datasource/DatasourceController.java

@@ -74,8 +74,8 @@ public class DatasourceController {
     @DePermission(type = DePermissionType.DATASOURCE, level = ResourceAuthLevel.DATASOURCE_LEVEL_MANAGE)
     @ApiOperation("删除数据源")
     @PostMapping("/delete/{datasourceID}")
-    public void deleteDatasource(@PathVariable(value = "datasourceID") String datasourceID) throws Exception {
-        datasourceService.deleteDatasource(datasourceID);
+    public ResultHolder deleteDatasource(@PathVariable(value = "datasourceID") String datasourceID) throws Exception {
+        return datasourceService.deleteDatasource(datasourceID);
     }
 
     @RequiresPermissions("datasource:read")

backend/src/main/java/io/dataease/service/datasource/DatasourceService.java

@@ -163,16 +163,17 @@ public class DatasourceService {
     }
 
     @DeCleaner(DePermissionType.DATASOURCE)
-    public void deleteDatasource(String datasourceId) throws Exception {
+    public ResultHolder deleteDatasource(String datasourceId) throws Exception {
         DatasetTableExample example = new DatasetTableExample();
         example.createCriteria().andDataSourceIdEqualTo(datasourceId);
         List<DatasetTable> datasetTables = datasetTableMapper.selectByExample(example);
         if(CollectionUtils.isNotEmpty(datasetTables)){
-            DataEaseException.throwException(datasetTables.size() +  Translator.get("i18n_datasource_not_allow_delete_msg"));
+            return ResultHolder.error(datasetTables.size() +  Translator.get("i18n_datasource_not_allow_delete_msg"));
         }
         Datasource datasource = datasourceMapper.selectByPrimaryKey(datasourceId);
         datasourceMapper.deleteByPrimaryKey(datasourceId);
         handleConnectionPool(datasource, "delete");
+        return ResultHolder.success("success");
     }
 
     public void updateDatasource(Datasource datasource) {

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

@@ -268,9 +268,16 @@ export default {
         type: 'warning'
       }).then(() => {
         delDs(datasource.id).then(res => {
-          this.$success(this.$t('commons.delete_success'))
-          this.switchMain('DataHome', {}, this.tData)
-          this.refreshType(datasource)
+          if(res.success){
+            this.$success(this.$t('commons.delete_success'))
+            this.switchMain('DataHome', {}, this.tData)
+            this.refreshType(datasource)
+          }else {
+            this.$message({
+              type: 'error',
+              message: res.message
+            })
+          }
         })
       }).catch(() => {
         this.$message({