日期格式为MM月dd日

src/main/java/com/dota/Main.java

@@ -7,7 +7,9 @@ import org.apache.poi.ss.usermodel.Sheet;
 import org.apache.poi.xssf.usermodel.XSSFWorkbook;
 
 import java.io.FileOutputStream;
+import java.text.DateFormat;
 import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
 import java.util.*;
 
 public class Main {
@@ -90,10 +92,12 @@ public class Main {
         }
     }
 
+
     /**
      * 写入表头，周几和日期
      */
     static void writeHead(Sheet sheet, int rowNum, LocalDate day){
+        DateTimeFormatter mmdd = DateTimeFormatter.ofPattern("MM月dd日");
         int i = 1;
         var row = sheet.createRow(rowNum++);
         var r2 = sheet.createRow(rowNum);
@@ -102,7 +106,7 @@ public class Main {
             cell.setCellValue(w.getValue());
 
             cell = r2.createCell(i++);
-            cell.setCellValue(day.toString());
+            cell.setCellValue(day.format(mmdd));
             day = day.plusDays(1);
         }
     }