no message

src/main/java/thyyxxk/webserver/utils/ToolExcel.java

@@ -14,14 +14,13 @@ import java.util.ArrayList;
 import java.util.List;
 
 public class ToolExcel {
-    private final List<Integer> widthIndex = new ArrayList<>();
-    private final BigExcelWriter writer = cn.hutool.poi.excel.ExcelUtil.getBigWriter();
-    private String format = "yyyy-mm-dd hh:mm:ss";
-
     public ToolExcel() {
-
     }
 
+    private final List<Integer> widthIndex = new ArrayList<>();
+    private final BigExcelWriter writer = cn.hutool.poi.excel.ExcelUtil.getBigWriter();
+    private String FORMAT = "yyyy-mm-dd hh:mm:ss";
+
     public ToolExcel addTitle(String name, String alias, int width) {
         writer.addHeaderAlias(name, alias);
         widthIndex.add(width);
@@ -35,13 +34,13 @@ public class ToolExcel {
     }
 
     public ToolExcel setDataFormat(String format) {
-        this.format = format;
+        FORMAT = format;
         return this;
     }
 
     private void setCellDateFormat() {
         DataFormat dataFormat = writer.getWorkbook().createDataFormat();
-        short format = dataFormat.getFormat(this.format);
+        short format = dataFormat.getFormat(FORMAT);
         StyleSet styleSet = writer.getStyleSet();
         styleSet.getCellStyleForDate()
                 .setDataFormat(format);