修复无对象读 返回map的size可能会头的size不一致 [Issue #2014]

src/main/java/com/alibaba/excel/read/listener/ModelBuildEventListener.java

@@ -16,17 +16,21 @@ import com.alibaba.excel.util.ConverterUtils;
 import com.alibaba.excel.util.FieldUtils;
 import com.alibaba.excel.util.MapUtils;
 
+import org.apache.commons.collections4.CollectionUtils;
+
 /**
  * Convert to the object the user needs
  *
  * @author jipengfei
  */
-public class ModelBuildEventListener extends AbstractIgnoreExceptionReadListener<Map<Integer, CellData>> {
-    private int headSize;
+public class ModelBuildEventListener implements ReadListener<Map<Integer, ReadCellData<?>>> {
 
     @Override
-    public void invokeHead(Map<Integer, CellData> cellDataMap, AnalysisContext context) {
-        this.headSize = cellDataMap.size();
+    public void invokeHead(Map<Integer, ReadCellData<?>> cellDataMap, AnalysisContext context) {
+        if (context.readSheetHolder().getMaxDataHeadSize() == null
+            || context.readSheetHolder().getMaxDataHeadSize() < CollectionUtils.size(cellDataMap)) {
+            context.readSheetHolder().setMaxDataHeadSize(CollectionUtils.size(cellDataMap));
+        }
     }
 
     @Override
@@ -43,61 +47,38 @@ public class ModelBuildEventListener extends AbstractIgnoreExceptionReadListener
     private Object buildStringList(Map<Integer, ReadCellData<?>> cellDataMap, ReadSheetHolder readSheetHolder,
         AnalysisContext context) {
         int index = 0;
-        if (context.readWorkbookHolder().getDefaultReturnMap()) {
-            Map<Integer, String> map = new LinkedHashMap<Integer, String>(cellDataMap.size() * 4 / 3 + 1);
-            for (Map.Entry<Integer, CellData> entry : cellDataMap.entrySet()) {
-                Integer key = entry.getKey();
-                CellData cellData = entry.getValue();
-                while (index < key) {
-                    map.put(index, null);
-                    index++;
-                }
-                index++;
-                if (cellData.getType() == CellDataTypeEnum.EMPTY) {
-                    map.put(key, null);
-                    continue;
-                }
-                map.put(key,
-                    (String)ConverterUtils.convertToJavaObject(cellData, null, null, currentReadHolder.converterMap(),
-                        currentReadHolder.globalConfiguration(), context.readRowHolder().getRowIndex(), key));
-            }
-            int headSize = currentReadHolder.excelReadHeadProperty().getHeadMap().size() == 0
-                ? this.headSize : currentReadHolder.excelReadHeadProperty().getHeadMap().size();
-            while (index < headSize) {
+        Map<Integer, String> map = MapUtils.newLinkedHashMapWithExpectedSize(cellDataMap.size());
+        for (Map.Entry<Integer, ReadCellData<?>> entry : cellDataMap.entrySet()) {
+            Integer key = entry.getKey();
+            ReadCellData<?> cellData = entry.getValue();
+            while (index < key) {
                 map.put(index, null);
                 index++;
             }
-            return map;
-        } else {
-            // Compatible with the old code the old code returns a list
-            List<String> list = new ArrayList<String>();
-            for (Map.Entry<Integer, CellData> entry : cellDataMap.entrySet()) {
-                Integer key = entry.getKey();
-                CellData cellData = entry.getValue();
-                while (index < key) {
-                    list.add(null);
-                    index++;
-                }
-                index++;
-                if (cellData.getType() == CellDataTypeEnum.EMPTY) {
-                    list.add(null);
-                    continue;
-                }
-                list.add(
-                    (String)ConverterUtils.convertToJavaObject(cellData, null, null, currentReadHolder.converterMap(),
-                        currentReadHolder.globalConfiguration(), context.readRowHolder().getRowIndex(), key));
-            }
-            int headSize = currentReadHolder.excelReadHeadProperty().getHeadMap().size() == 0
-                ? this.headSize : currentReadHolder.excelReadHeadProperty().getHeadMap().size();
-            while (index < headSize) {
-                list.add(null);
-                index++;
-            }
-            return list;
+            index++;
+            map.put(key,
+                (String)ConverterUtils.convertToJavaObject(cellData, null, null, readSheetHolder.converterMap(),
+                    context, context.readRowHolder().getRowIndex(), key));
+        }
+        // fix https://github.com/alibaba/easyexcel/issues/2014
+        int headSize = calculateHeadSize(readSheetHolder);
+        while (index < headSize) {
+            map.put(index, null);
+            index++;
         }
         return map;
     }
 
+    private int calculateHeadSize(ReadSheetHolder readSheetHolder) {
+        if (readSheetHolder.excelReadHeadProperty().getHeadMap().size() > 0) {
+            return readSheetHolder.excelReadHeadProperty().getHeadMap().size();
+        }
+        if (readSheetHolder.getMaxDataHeadSize() != null) {
+            return readSheetHolder.getMaxDataHeadSize();
+        }
+        return 0;
+    }
+
     private Object buildUserModel(Map<Integer, ReadCellData<?>> cellDataMap, ReadSheetHolder readSheetHolder,
         AnalysisContext context) {
         ExcelReadHeadProperty excelReadHeadProperty = readSheetHolder.excelReadHeadProperty();

src/main/java/com/alibaba/excel/read/metadata/holder/ReadSheetHolder.java

@@ -57,6 +57,11 @@ public class ReadSheetHolder extends AbstractReadHolder {
      * Current CellData
      */
     private ReadCellData<?> tempCellData;
+    /**
+     * Read the size of the largest head in sheet head data.
+     * see https://github.com/alibaba/easyexcel/issues/2014
+     */
+    private Integer maxDataHeadSize;
 
     public ReadSheetHolder(ReadSheet readSheet, ReadWorkbookHolder readWorkbookHolder) {
         super(readSheet, readWorkbookHolder);

src/test/java/com/alibaba/easyexcel/test/temp/Lock2Test.java

@@ -5,14 +5,6 @@ import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
 
-import org.apache.poi.hssf.util.CellReference;
-import org.apache.poi.ss.usermodel.FillPatternType;
-import org.apache.poi.ss.usermodel.IndexedColors;
-import org.junit.Ignore;
-import org.junit.Test;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 import com.alibaba.easyexcel.test.demo.write.DemoData;
 import com.alibaba.easyexcel.test.util.TestFileUtil;
 import com.alibaba.excel.EasyExcel;
@@ -21,6 +13,15 @@ import com.alibaba.excel.write.metadata.style.WriteFont;
 import com.alibaba.excel.write.style.HorizontalCellStyleStrategy;
 import com.alibaba.fastjson.JSON;
 
+import org.apache.commons.collections4.CollectionUtils;
+import org.apache.poi.hssf.util.CellReference;
+import org.apache.poi.ss.usermodel.FillPatternType;
+import org.apache.poi.ss.usermodel.IndexedColors;
+import org.junit.Ignore;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 /**
  * 临时测试
  *
@@ -33,12 +34,12 @@ public class Lock2Test {
 
     @Test
     public void test() throws Exception {
-//        File file = TestFileUtil.readUserHomeFile("test/test6.xls");
-        File file = new File("/Users/zhuangjiaju/Downloads/1.xlsx");
+        File file = TestFileUtil.readUserHomeFile("test/test4.xlsx");
 
-        List<Object> list = EasyExcel.read(file).sheet(0).headRowNumber(0).doReadSync();
+        List<Object> list = EasyExcel.read(file).sheet(0).doReadSync();
         LOGGER.info("数据：{}", list.size());
         for (Object data : list) {
+            LOGGER.info("返回数据：{}", CollectionUtils.size(data));
             LOGGER.info("返回数据：{}", JSON.toJSONString(data));
         }
     }
@@ -60,7 +61,7 @@ public class Lock2Test {
         // 背景设置为红色
         headWriteCellStyle.setFillForegroundColor(IndexedColors.RED.getIndex());
         WriteFont headWriteFont = new WriteFont();
-        headWriteFont.setFontHeightInPoints((short) 20);
+        headWriteFont.setFontHeightInPoints((short)20);
         headWriteCellStyle.setWriteFont(headWriteFont);
         // 内容的策略
         WriteCellStyle contentWriteCellStyle = new WriteCellStyle();
@@ -70,7 +71,7 @@ public class Lock2Test {
         contentWriteCellStyle.setFillForegroundColor(IndexedColors.GREEN.getIndex());
         WriteFont contentWriteFont = new WriteFont();
         // 字体大小
-        contentWriteFont.setFontHeightInPoints((short) 20);
+        contentWriteFont.setFontHeightInPoints((short)20);
         contentWriteCellStyle.setWriteFont(contentWriteFont);
         // 这个策略是 头是头的样式 内容是内容的样式 其他的策略可以自己实现
         HorizontalCellStyleStrategy horizontalCellStyleStrategy =

update.md

@@ -17,6 +17,7 @@
 * `Converter`支持null转换 [Issue #1776](https://github.com/alibaba/easyexcel/issues/1776)
 * cglib 新增命名策略，防止和`spring`的冲突  [Issue #2064](https://github.com/alibaba/easyexcel/issues/2064)
 * 修改填充可能填充错误的bug  [Issue #2035](https://github.com/alibaba/easyexcel/issues/2035)
+* 修复无对象读 返回map的size可能会头的size不一致 [Issue #2014](https://github.com/alibaba/easyexcel/issues/2014)
 
 # 2.2.10
 * 修复读取的时候用string接收数字 可能四舍五入不一致的bug