* 兼容某些特殊的xls: 修改了内置的样式导致判断样式错误

easyexcel-core/src/main/java/com/alibaba/excel/constant/BuiltinFormats.java

@@ -4,6 +4,7 @@
 import java.util.Map;
 
 import com.alibaba.excel.util.MapUtils;
+import com.alibaba.excel.util.StringUtils;
 
 /**
  * Excel's built-in format conversion.Currently only supports Chinese.
@@ -22,6 +23,112 @@ public class BuiltinFormats {
 
     public static short GENERAL = 0;
 
+    public static final String[] BUILTIN_FORMATS_ALL_LANGUAGES = {
+        // 0
+        "General",
+        // 1
+        "0",
+        // 2
+        "0.00",
+        // 3
+        "#,##0",
+        // 4
+        "#,##0.00",
+        // 5
+        "\"￥\"#,##0_);(\"￥\"#,##0)",
+        // 6
+        "\"￥\"#,##0_);[Red](\"￥\"#,##0)",
+        // 7
+        "\"￥\"#,##0.00_);(\"￥\"#,##0.00)",
+        // 8
+        "\"￥\"#,##0.00_);[Red](\"￥\"#,##0.00)",
+        // 9
+        "0%",
+        // 10
+        "0.00%",
+        // 11
+        "0.00E+00",
+        // 12
+        "# ?/?",
+        // 13
+        "# ??/??",
+        // 14
+        // The official documentation shows "m/d/yy", but the actual test is "yyyy/m/d".
+        "yyyy/m/d",
+        // 15
+        "d-mmm-yy",
+        // 16
+        "d-mmm",
+        // 17
+        "mmm-yy",
+        // 18
+        "h:mm AM/PM",
+        // 19
+        "h:mm:ss AM/PM",
+        // 20
+        "h:mm",
+        // 21
+        "h:mm:ss",
+        // 22
+        // The official documentation shows "m/d/yy h:mm", but the actual test is "yyyy-m-d h:mm".
+        "yyyy-m-d h:mm",
+        // 23-36 No specific correspondence found in the official documentation.
+        // 23
+        null,
+        // 24
+        null,
+        // 25
+        null,
+        // 26
+        null,
+        // 27
+        null,
+        // 28
+        null,
+        // 29
+        null,
+        // 30
+        null,
+        // 31
+        null,
+        // 32
+        null,
+        // 33
+        null,
+        // 34
+        null,
+        // 35
+        null,
+        // 36
+        null,
+        // 37
+        "#,##0_);(#,##0)",
+        // 38
+        "#,##0_);[Red](#,##0)",
+        // 39
+        "#,##0.00_);(#,##0.00)",
+        // 40
+        "#,##0.00_);[Red](#,##0.00)",
+        // 41
+        "_(* #,##0_);_(* (#,##0);_(* \"-\"_);_(@_)",
+        // 42
+        "_(\"￥\"* #,##0_);_(\"￥\"* (#,##0);_(\"￥\"* \"-\"_);_(@_)",
+        // 43
+        "_(* #,##0.00_);_(* (#,##0.00);_(* \"-\"??_);_(@_)",
+        // 44
+        "_(\"￥\"* #,##0.00_);_(\"￥\"* (#,##0.00);_(\"￥\"* \"-\"??_);_(@_)",
+        // 45
+        "mm:ss",
+        // 46
+        "[h]:mm:ss",
+        // 47
+        "mm:ss.0",
+        // 48
+        "##0.0E+0",
+        // 49
+        "@",
+    };
+
     public static final String[] BUILTIN_FORMATS_CN = {
         // 0
         "General",
@@ -371,8 +478,26 @@ public class BuiltinFormats {
     public static final short MIN_CUSTOM_DATA_FORMAT_INDEX = 82;
 
     public static String getBuiltinFormat(Short index, String defaultFormat, Locale locale) {
+        if (index == null || index <= 0) {
+            return defaultFormat;
+        }
+
+        // Give priority to checking if it is the default value for all languages
+        if (index < BUILTIN_FORMATS_ALL_LANGUAGES.length) {
+            String format = BUILTIN_FORMATS_ALL_LANGUAGES[index];
+            if (format != null) {
+                return format;
+            }
+        }
+
+        // In other cases, give priority to using the externally provided format
+        if (!StringUtils.isEmpty(defaultFormat) && !defaultFormat.startsWith("reserved-")) {
+            return defaultFormat;
+        }
+
+        // Finally, try using the built-in format
         String[] builtinFormat = switchBuiltinFormats(locale);
-        if (index == null || index < 0 || index >= builtinFormat.length) {
+        if (index >= builtinFormat.length) {
             return defaultFormat;
         }
         return builtinFormat[index];

easyexcel-core/src/main/java/com/alibaba/excel/util/DateUtils.java

@@ -470,31 +470,10 @@ public static boolean isInternalDateFormat(short format) {
             case 0x14:
             case 0x15:
             case 0x16:
-                // 27-36
-            case 0x1b:
-            case 0x1c:
-            case 0x1d:
-            case 0x1e:
-            case 0x1f:
-            case 0x20:
-            case 0x21:
-            case 0x22:
-            case 0x23:
-            case 0x24:
-                // 45-47
+            // 45-47
             case 0x2d:
             case 0x2e:
             case 0x2f:
-                // 50-58
-            case 0x32:
-            case 0x33:
-            case 0x34:
-            case 0x35:
-            case 0x36:
-            case 0x37:
-            case 0x38:
-            case 0x39:
-            case 0x3a:
                 return true;
         }
         return false;

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

@@ -52,8 +52,7 @@ public void test() throws Exception {
         File file = new File("/Users/zhuangjiaju/IdeaProjects/easyexcel/src/test/resources/converter/converter07.xlsx");
 
         List<Object> list = EasyExcel.read(
-                "/Users/zhuangjiaju/IdeaProjects/easyexcel/easyexcel-test/target/test-classes"
-                    + "/simpleWrite1674051907397.xlsx")
+                "/Users/zhuangjiaju/Downloads/证券投资基金估值表_外贸信托-稳盈淳享37号集合资金信托计划_2024-07-23.xls")
             //.useDefaultListener(false)
             .sheet(0)
             .headRowNumber(0).doReadSync();

easyexcel-test/src/test/java/com/alibaba/easyexcel/test/temp/poi/PoiDateFormatTest.java

@@ -0,0 +1,40 @@
+package com.alibaba.easyexcel.test.temp.poi;
+
+import java.io.IOException;
+
+import org.apache.poi.ss.usermodel.DateUtil;
+import org.apache.poi.xssf.usermodel.XSSFCell;
+import org.apache.poi.xssf.usermodel.XSSFRow;
+import org.apache.poi.xssf.usermodel.XSSFSheet;
+import org.apache.poi.xssf.usermodel.XSSFWorkbook;
+import org.junit.jupiter.api.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * 测试poi
+ *
+ * @author Jiaju Zhuang
+ **/
+
+public class PoiDateFormatTest {
+    private static final Logger LOGGER = LoggerFactory.getLogger(PoiDateFormatTest.class);
+
+    @Test
+    public void read() throws IOException {
+        String file
+            = "/Users/zhuangjiaju/IdeaProjects/easyexcel/easyexcel-test/src/test/resources/dataformat/dataformat.xlsx";
+        XSSFWorkbook xssfWorkbook = new XSSFWorkbook( file);
+        XSSFSheet xssfSheet = xssfWorkbook.getSheetAt(0);
+        LOGGER.info("一共行数:{}", xssfSheet.getLastRowNum());
+        XSSFRow row = xssfSheet.getRow(7);
+        XSSFCell cell = row.getCell(0);
+        LOGGER.info("dd{}", cell.getDateCellValue());
+        LOGGER.info("dd{}", cell.getNumericCellValue());
+
+        LOGGER.info("dd{}", DateUtil.isCellDateFormatted(cell));
+
+
+    }
+
+}

pom.xml

@@ -20,7 +20,7 @@
 
 
     <properties>
-        <revision>4.0.1</revision>
+        <revision>4.0.2</revision>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <jdk.version>1.8</jdk.version>
         <gpg.skip>true</gpg.skip>

update.md

@@ -1,4 +1,8 @@
-# 4.0.1
+# 4.0.2
+
+* 兼容某些特殊的xls: 修改了内置的样式导致判断样式错误
+
+* # 4.0.1
 
 * `commons-io` 修改为依赖 `poi`的版本
 * 修复临时目录被清理可能提示`NoSuchFileException`的异常