fix: 查询数据时，先校验数据源有效性

backend/src/main/java/io/dataease/service/chart/ChartViewService.java

@@ -344,7 +344,7 @@ public class ChartViewService {
             if (ObjectUtils.isEmpty(ds)) {
                 throw new RuntimeException(Translator.get("i18n_datasource_delete"));
             }
-            if(ds.getStatus().equalsIgnoreCase("Error")){
+            if(StringUtils.isNotEmpty(ds.getStatus()) && ds.getStatus().equalsIgnoreCase("Error")){
                 throw new Exception(Translator.get("i18n_invalid_ds"));
             }
             DatasourceProvider datasourceProvider = ProviderFactory.getProvider(ds.getType());

backend/src/main/java/io/dataease/service/dataset/DataSetTableService.java

@@ -578,7 +578,7 @@ public class DataSetTableService {
                 if (ObjectUtils.isEmpty(ds)) {
                     throw new RuntimeException(Translator.get("i18n_datasource_delete"));
                 }
-                if(ds.getStatus().equalsIgnoreCase("Error")){
+                if(StringUtils.isNotEmpty(ds.getStatus()) && ds.getStatus().equalsIgnoreCase("Error")){
                     throw new Exception(Translator.get("i18n_invalid_ds"));
                 }
                 DatasourceProvider datasourceProvider = ProviderFactory.getProvider(ds.getType());
@@ -646,7 +646,7 @@ public class DataSetTableService {
                 if (ObjectUtils.isEmpty(ds)) {
                     throw new RuntimeException(Translator.get("i18n_datasource_delete"));
                 }
-                if(ds.getStatus().equalsIgnoreCase("Error")){
+                if(StringUtils.isNotEmpty(ds.getStatus()) && ds.getStatus().equalsIgnoreCase("Error")){
                     throw new Exception(Translator.get("i18n_invalid_ds"));
                 }
                 DatasourceProvider datasourceProvider = ProviderFactory.getProvider(ds.getType());

backend/src/main/java/io/dataease/service/dataset/impl/direct/DirectFieldService.java

@@ -65,7 +65,7 @@ public class DirectFieldService implements DataSetFieldService {
         if (datasetTable.getMode() == 0) {// 直连
             if (StringUtils.isEmpty(datasetTable.getDataSourceId())) return null;
             Datasource ds = datasourceService.get(datasetTable.getDataSourceId());
-            if(ds.getStatus().equalsIgnoreCase("Error")){
+            if(StringUtils.isNotEmpty(ds.getStatus()) && ds.getStatus().equalsIgnoreCase("Error")){
                 throw new Exception(Translator.get("i18n_invalid_ds"));
             }
             datasourceProvider = ProviderFactory.getProvider(ds.getType());