CHART-13116 自定义匹配时把匹配数据转换为String

designer-chart/src/main/java/com/fr/design/chartx/component/MapAreaMatchPane.java

@@ -247,7 +247,7 @@ public class MapAreaMatchPane extends BasicBeanPane<MapMatchResult> {
             HashSet<Object> columnData = new LinkedHashSet<>();
             for (int i = 0; i < size; i++) {
                 Object valueAt = dataModel.getValueAt(i, colIndex);
-                columnData.add(valueAt == null ? StringUtils.EMPTY : valueAt);
+                columnData.add(GeneralUtils.objectToString(valueAt));
             }
             return columnData.toArray();
         } catch (TableDataException ignore) {