add test

hutool-poi/src/test/java/cn/hutool/v7/poi/excel/writer/Issue4146Test.java

@@ -0,0 +1,68 @@
+package cn.hutool.v7.poi.excel.writer;
+
+import cn.hutool.v7.poi.excel.ExcelUtil;
+import cn.hutool.v7.poi.excel.style.StyleUtil;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import org.apache.poi.ss.usermodel.BorderStyle;
+import org.apache.poi.ss.usermodel.CellStyle;
+import org.apache.poi.ss.usermodel.FillPatternType;
+import org.apache.poi.ss.usermodel.IndexedColors;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Issue4146Test {
+	@Test
+	@Disabled
+	public void writeSheetWithStyleTest() {
+		final ExcelWriter writer = ExcelUtil.getWriter("d:\\test\\issue4146.xlsx", "表格1");
+
+		final List<TestUser> list = new ArrayList<>();
+		TestUser test = new TestUser("张三", 18, 90.0, 0.9878);
+		list.add(test);
+		test = new TestUser("李四", 18, 79.5, 0.8311);
+		list.add(test);
+		test = new TestUser("王五", 18, 89.9, 0.6932);
+		list.add(test);
+		test = new TestUser("赵六", 18, 69.9, 0.7912);
+		list.add(test);
+		test = new TestUser("孙七", 18, 79.9, 0.6432);
+		list.add(test);
+
+		final ExcelWriteConfig config = writer.getConfig();
+		config.addHeaderAlias("name", "姓名");
+		config.addHeaderAlias("age", "年龄");
+		config.addHeaderAlias("score", "分数");
+		config.addHeaderAlias("zb", "占比");
+
+		config.setOnlyAlias(true);
+		writer.write(list, true);
+
+		// 百分比的单元格样式必须单独创建，使用StyleSet中的样式修改则会修改全局样式
+		final CellStyle percentCellStyle = writer.createCellStyle();
+		percentCellStyle.setDataFormat(writer.getWorkbook().createDataFormat().getFormat("0.00%"));
+		// 填充背景颜色，必须指定FillPatternType才有效
+		StyleUtil.setColor(percentCellStyle, IndexedColors.YELLOW, FillPatternType.SOLID_FOREGROUND);
+		// 设置边框颜色和粗细
+		StyleUtil.setBorder(percentCellStyle, BorderStyle.THIN, IndexedColors.BLACK);
+		final int rowCount = writer.getRowCount();
+		// 设置列样式无效，除非将默认样式清除，因此必须在写出数据后为单元格指定自定义的样式
+		for (int i = 1; i < rowCount; i++) {
+			writer.setStyle(percentCellStyle, 3, i);
+		}
+
+		writer.close();
+	}
+
+	@Data
+	@AllArgsConstructor
+	static class TestUser {
+		private String name;
+		private Integer age;
+		private Double score;
+		private Double zb;
+	}
+}