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hutool-poi/src/main/java/cn/hutool/poi/excel/ExcelWriter.java

@@ -307,16 +307,6 @@ public class ExcelWriter extends ExcelBase<ExcelWriter> {
 		return this;
 	}
 
-	/**
-	 * 设置 是否数字类型单元格精度根据单元格实际数值自动适配
-	 * @param autoPrecision
-	 * @return this
-	 */
-	public ExcelWriter setNumberAutoPrecision(boolean autoPrecision) {
-		this.styleSet.setNumberAutoPrecision(autoPrecision);
-		return this;
-	}
-
 	/**
 	 * 获取样式集，样式集可以自定义包括：<br>
 	 *
@@ -1022,7 +1012,7 @@ public class ExcelWriter extends ExcelBase<ExcelWriter> {
 			} else {
 				rowMap = (Map) rowBean;
 			}
-		}else if(rowBean instanceof Iterable){
+		} else if (rowBean instanceof Iterable) {
 			// issue#2398@Github
 			// MapWrapper由于实现了Iterable接口，应该优先按照Map处理
 			return writeRow((Iterable<?>) rowBean);
@@ -1077,7 +1067,7 @@ public class ExcelWriter extends ExcelBase<ExcelWriter> {
 			for (Table.Cell<?, ?, ?> cell : aliasTable) {
 				// 首先查找原名对应的列号
 				location = this.headLocationCache.get(StrUtil.toString(cell.getRowKey()));
-				if(null == location){
+				if (null == location) {
 					// 未找到，则查找别名对应的列号
 					location = this.headLocationCache.get(StrUtil.toString(cell.getColumnKey()));
 				}
@@ -1355,9 +1345,9 @@ public class ExcelWriter extends ExcelBase<ExcelWriter> {
 	private Table<?, ?, ?> aliasTable(Map<?, ?> rowMap) {
 		final Table<Object, Object, Object> filteredTable = new RowKeyTable<>(new LinkedHashMap<>(), TableMap::new);
 		if (MapUtil.isEmpty(this.headerAlias)) {
-			rowMap.forEach((key, value)-> filteredTable.put(key, key, value));
+			rowMap.forEach((key, value) -> filteredTable.put(key, key, value));
-		}else{
+		} else {
-			rowMap.forEach((key, value)->{
+			rowMap.forEach((key, value) -> {
 				final String aliasName = this.headerAlias.get(StrUtil.toString(key));
 				if (null != aliasName) {
 					// 别名键值对加入

hutool-poi/src/main/java/cn/hutool/poi/excel/StyleSet.java

@@ -2,15 +2,7 @@ package cn.hutool.poi.excel;
 
 import cn.hutool.poi.excel.style.StyleUtil;
 import org.apache.poi.hssf.util.HSSFColor;
-import org.apache.poi.ss.usermodel.BorderStyle;
+import org.apache.poi.ss.usermodel.*;
-import org.apache.poi.ss.usermodel.CellStyle;
-import org.apache.poi.ss.usermodel.FillPatternType;
-import org.apache.poi.ss.usermodel.Font;
-import org.apache.poi.ss.usermodel.HorizontalAlignment;
-import org.apache.poi.ss.usermodel.Hyperlink;
-import org.apache.poi.ss.usermodel.IndexedColors;
-import org.apache.poi.ss.usermodel.VerticalAlignment;
-import org.apache.poi.ss.usermodel.Workbook;
 
 import java.io.Serializable;
 import java.math.BigDecimal;
@@ -51,10 +43,6 @@ public class StyleSet implements Serializable {
 	 */
 	protected final CellStyle cellStyleForHyperlink;
 
-	/**
-	 * 数字类型单元格精度根据单元格实际数值自动适配
-	 */
-	protected Boolean numberAutoPrecision;
 	/**
 	 * 构造
 	 *
@@ -82,9 +70,6 @@ public class StyleSet implements Serializable {
 		font.setUnderline((byte) 1);
 		font.setColor(HSSFColor.HSSFColorPredefined.BLUE.getIndex());
 		this.cellStyleForHyperlink.setFont(font);
-
-		// 数字类型单元格精度根据单元格实际数值自动适配
-		this.setNumberAutoPrecision(false);
 	}
 
 	/**
@@ -133,14 +118,6 @@ public class StyleSet implements Serializable {
 		return this.cellStyleForHyperlink;
 	}
 
-	public Boolean getNumberAutoPrecision() {
-		return numberAutoPrecision;
-	}
-
-	public void setNumberAutoPrecision(Boolean numberAutoPrecision) {
-		this.numberAutoPrecision = numberAutoPrecision;
-	}
-
 	/**
 	 * 定义所有单元格的边框类型
 	 *
@@ -269,13 +246,8 @@ public class StyleSet implements Serializable {
 			// 数字单独定义格式
 			if ((value instanceof Double || value instanceof Float || value instanceof BigDecimal) &&
 				null != this.cellStyleForNumber) {
-				BigDecimal bigDecimalValue = new BigDecimal(value.toString());
-				if(numberAutoPrecision){
-					this.cellStyleForNumber.setDataFormat((short)bigDecimalValue.precision());
-				}else{
 				style = this.cellStyleForNumber;
 			}
-			}
 		} else if (value instanceof Hyperlink) {
 			// 自定义超链接样式
 			if (null != this.cellStyleForHyperlink) {

hutool-poi/src/test/java/cn/hutool/poi/excel/Issue3048Test.java

@@ -5,14 +5,14 @@ import lombok.Data;
 import org.junit.Ignore;
 import org.junit.Test;
 
-import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.math.BigDecimal;
 import java.util.ArrayList;
 import java.util.List;
 
 /**
- * https://github.com/dromara/hutool/issues/3048 Excel导出javaBean中有BigDecimal类型精度流失
+ * https://github.com/dromara/hutool/issues/3048
+ * Excel导出javaBean中有BigDecimal类型精度流失
  *
  */
 public class Issue3048Test {
@@ -22,11 +22,12 @@ public class Issue3048Test {
 		List<TestBean> excelExportList = new ArrayList<>();
 		excelExportList.add(new TestBean("1", new BigDecimal("1.22")));
 		excelExportList.add(new TestBean("2", new BigDecimal("2.342")));
-		excelExportList.add(new TestBean("3", new BigDecimal("1.2346")));
+		excelExportList.add(new TestBean("3", new BigDecimal("1.2346453453534534543545")));
 		ExcelWriter excelWriter = ExcelUtil.getWriter(true);
-		excelWriter.setNumberAutoPrecision(true);
+		//excelWriter.setNumberAutoPrecision(true);
 		excelWriter.write(excelExportList, true);
-		excelWriter.flush(new File("e:/test.xlsx"));
+		excelWriter.getStyleSet().getCellStyleForNumber().setDataFormat((short) 0);
+		excelWriter.flush(new File("d:/test/test.xlsx"));
 		excelWriter.close();
 	}