add template support

hutool-poi/src/test/java/org/dromara/hutool/poi/excel/writer/ExcelWriteTest.java

@@ -143,7 +143,7 @@ public class ExcelWriteTest {
 		writer.writeRow(row2);
 
 		// 生成文件或导出Excel
-		writer.flush(FileUtil.file("d:/test/writeWithSheetTest.xlsx"));
+		writer.flush(FileUtil.file("d:/test/writeWithSheetTest.xlsx"), true);
 
 		writer.close();
 	}
@@ -868,7 +868,7 @@ public class ExcelWriteTest {
 
 		writer.writeImg(file, 0, 0, 5, 10);
 
-		writer.flush(new File("C:\\Users\\zsz\\Desktop\\2.xlsx"));
+		writer.flush(new File("C:\\Users\\zsz\\Desktop\\2.xlsx"), true);
 
 		writer.close();
 	}

hutool-poi/src/test/java/org/dromara/hutool/poi/excel/writer/TemplateContextTest.java

@@ -22,6 +22,6 @@ public class TemplateContextTest {
 		final ExcelWriter writer = ExcelUtil.getWriter("template.xlsx");
 		final TemplateContext templateContext = new TemplateContext(writer.getSheet());
 		Assertions.assertNotNull(templateContext.getCell("date"));
-		Assertions.assertNotNull(templateContext.getCell(".month"));
+		Assertions.assertNotNull(templateContext.getCell("month"));
 	}
 }

hutool-poi/src/test/java/org/dromara/hutool/poi/excel/writer/TemplateWriterTest.java

@@ -0,0 +1,34 @@
+package org.dromara.hutool.poi.excel.writer;
+
+import org.dromara.hutool.core.io.file.FileUtil;
+import org.dromara.hutool.core.map.MapUtil;
+import org.dromara.hutool.poi.excel.ExcelUtil;
+import org.junit.jupiter.api.Test;
+
+public class TemplateWriterTest {
+	@Test
+	void writeRowTest() {
+		final ExcelWriter writer = ExcelUtil.getWriter("d:/test/template.xlsx");
+
+		// 单个替换的变量
+		writer.fillRow(MapUtil
+			.builder("date", (Object)"2024-01-01")
+			.build());
+
+		// 列表替换
+		for (int i = 0; i < 10; i++) {
+			writer.fillRow(MapUtil
+				.builder("user.name", (Object)"张三")
+				.put("user.age", 18)
+				.put("year", 2024)
+				.put("month", 8)
+				.put("day", 24)
+				.put("day", 24)
+				.put("user.area123", "某某市")
+				.put("invalid", "不替换")
+				.build());
+		}
+
+		writer.flush(FileUtil.file("d:/test/templateResult.xlsx"), true);
+	}
+}