excel合并单元格修复

gic-enterprise-download/src/main/java/com/gic/download/utils/ExcelUtils.java

@@ -222,7 +222,7 @@ public class ExcelUtils {
                 n++;
                 continue;
             }
-            if (n == 0 && sonHeader.size() == 1) {
+            if (!(n == 0 && sonHeader.size() == 1)) {
                 //一个单元格，合并操作会报错
                 //创建第一行大标题
                 sheet.addMergedRegion(new CellRangeAddress(0, 0, n, (n + sonHeader.size() - 1)));