修复空数据未替换掉的bug

src/main/java/com/alibaba/excel/write/executor/ExcelWriteFillExecutor.java

@@ -279,7 +279,12 @@ public class ExcelWriteFillExecutor extends AbstractExcelWriteExecutor {
                 if (cell == null) {
                     continue;
                 }
-                prepareData(cell.getStringCellValue(), analysisCellList, collectionAnalysisCellList, i, j);
+                boolean needFill =
+                    prepareData(cell.getStringCellValue(), analysisCellList, collectionAnalysisCellList, i, j);
+                // Prevent empty data from not being replaced
+                if (needFill) {
+                    cell.setCellValue(StringUtils.EMPTY);
+                }
             }
         }
         templateAnalysisCache.put(sheetNo, analysisCellList);
@@ -287,10 +292,19 @@ public class ExcelWriteFillExecutor extends AbstractExcelWriteExecutor {
         return analysisCache.get(sheetNo);
     }
 
-    private void prepareData(String value, List<AnalysisCell> analysisCellList,
+    /**
+     *
+     * @param value
+     * @param analysisCellList
+     * @param collectionAnalysisCellList
+     * @param rowIndex
+     * @param columnIndex
+     * @return Is a cell to be filled
+     */
+    private boolean prepareData(String value, List<AnalysisCell> analysisCellList,
         List<AnalysisCell> collectionAnalysisCellList, int rowIndex, int columnIndex) {
         if (StringUtils.isEmpty(value)) {
-            return;
+            return false;
         }
         AnalysisCell analysisCell = null;
         int startIndex = 0;
@@ -365,7 +379,9 @@ public class ExcelWriteFillExecutor extends AbstractExcelWriteExecutor {
             } else {
                 collectionAnalysisCellList.add(analysisCell);
             }
+            return true;
         }
+        return false;
     }
 
     private String convertPrepareData(String prepareData) {

update.md

 # 2.1.0-beta2
 * 修改模板通过流创建报错的bug
-* 
+* 修复空数据未替换掉的bug
 
 # 2.1.0-beta1
 * 新增支持导入、导出支持公式