fix bug

hutool-core/src/main/java/cn/hutool/core/comparator/IndexedComparator.java

@@ -46,6 +46,14 @@ public class IndexedComparator<T> implements Comparator<T> {
 		final int index1 = getOrder(o1);
 		final int index2 = getOrder(o2);
 
+		// 任意一个元素不在列表中
+		if(index1 == index2){
+			if(index1 < 0 || index1 == this.array.length){
+				// 任意一个元素不在列表中, 返回原顺序
+				return 1;
+			}
+		}
+
 		return Integer.compare(index1, index2);
 	}
 

hutool-poi/src/test/java/cn/hutool/poi/excel/IssueI66Z6BTest.java

@@ -0,0 +1,53 @@
+package cn.hutool.poi.excel;
+
+import cn.hutool.core.date.DateUtil;
+import cn.hutool.core.io.FileUtil;
+import org.junit.Ignore;
+import org.junit.Test;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+public class IssueI66Z6BTest {
+
+	/**
+	 * 部分字段定义别名后，由于IndexedComparator比较器的问题，会造成字段丢失，已修复
+	 */
+	@Test
+	@Ignore
+	public void test() {
+		final File destFile = new File("D:/test/0001test.xlsx");
+		FileUtil.del(destFile);
+
+		final List<Map<String, Object>> dataList = new ArrayList<>();
+
+		final Map<String, Object> row1 = new LinkedHashMap<>();
+		row1.put("姓名", "张三");
+		row1.put("年龄", 23);
+		row1.put("成绩", 88.32);
+		row1.put("是否合格", true);
+		row1.put("考试日期", DateUtil.now());
+		dataList.add(row1);
+
+		final Map<String, Object> row2 = new LinkedHashMap<>();
+		row2.put("姓名", "李四");
+		row2.put("年龄", 33);
+		row2.put("成绩", 59.50);
+		row2.put("是否合格", false);
+		row2.put("考试日期", DateUtil.now());
+		dataList.add(row2);
+
+		// 通过工具类创建writer
+		final ExcelWriter writer = ExcelUtil.getWriter(destFile);
+
+		//自定义标题别名
+		writer.addHeaderAlias("姓名", "name");
+		writer.addHeaderAlias("年龄", "age");
+
+		writer.write(dataList, true);
+		writer.close();
+	}
+}