com.alibaba.excel.exception.ExcelWriteDataConvertException: Can not find 'Converter' support class XXX.

public class SpecClassConverter implements Converter<SpecClass> {}
// 以下為實現(xiàn)方法
Class<?> supportJavaTypeKey();
// 支持數(shù)據(jù)轉(zhuǎn)換的java類型， 例如: return LocalDate.class/Integer.class/Boolean.class/customClass.class;
CellDataTypeEnum supportExcelTypeKey();
// 支持數(shù)據(jù)轉(zhuǎn)換的單元格類型, 例如: return CellDataTypeEnum.STRING;
T convertToJavaData(ReadCellData<?> cellData, ExcelContentProperty contentProperty,GlobalConfiguration globalConfiguration);
// 將單元格內(nèi)容轉(zhuǎn)換成java對象;導入時使用 例如: return LocalDate.parse(cellData.getStringValue(), DateTimeFormatter.ofPattern("yyyy-MM-dd"));/return cellData.getStringValue().equals("是") ? 1 : 0; 注意自己處理空指針/空數(shù)據(jù)問題
T convertToJavaData(ReadConverterContext<?> context);
//  return convertToJavaData(context.getReadCellData(), context.getContentProperty(),context.getAnalysisContext().currentReadHolder().globalConfiguration());
// 估計是舊版本Api，默認實現(xiàn)調(diào)用上面方法，所以只重寫上面方法就可以了 
WriteCellData<?> convertToExcelData(T value, ExcelContentProperty contentProperty,GlobalConfiguration globalConfiguration);
// 將java對象導出為指定單元格內(nèi)容 例如: return new WriteCellData<>((LocalDate)value.format(DateUtil.formatter1));/return new WriteCellData<>((Integer)value == 1 ? "是" : "否"); 更多單元格樣式設置請參照官方文檔
WriteCellData<?> convertToExcelData(WriteConverterContext<T> context);
//  return convertToExcelData(context.getValue(), context.getContentProperty(),context.getWriteContext().currentWriteHolder().globalConfiguration());
// 估計是舊版本Api，默認實現(xiàn)調(diào)用上面方法，所以只重寫上面方法就可以了 

// 代碼很簡單，重寫converter的時候指定處理規(guī)則，然后將要脫敏的字段指定使用該Converter
@Override
    public WriteCellData<String> convertToExcelData(String value, ExcelContentProperty contentProperty,
                                               GlobalConfiguration globalConfiguration) throws IOException {
                String s = value.replaceAll("[0123456789]", "*");
        WriteCellData<String> res = new WriteCellData<>(s);
        return res;
    }

// 代碼思路是在類上注冊這個轉(zhuǎn)換器，因為我們有個系統(tǒng)是提數(shù)系統(tǒng)，所有的導出最后統(tǒng)一由一個ExcelWriterBuilder處理，所以這個方式很省力
@Override
    public WriteCellData<String> convertToExcelData(String value, ExcelContentProperty contentProperty,
                                               GlobalConfiguration globalConfiguration) throws IOException {
        WriteCellData<String> res;
        Field field = contentProperty.getField();
        // 固定字段值 為了判斷當前字段是否處理，獲取當前字段的名稱,進行判斷
      	if(field.getName().equals("handler")){
            String s = value.replaceAll("[0123456789]", "*");
            res = new WriteCellData<>(s);
        }else{
            res = new WriteCellData<>(value);
        }
		// 字段值不固定，指定了 @ExcelProperty 注解中的value，固定導出列頭，利用反射拿到注解
		ExcelProperty annotation = contentProperty.getField().getAnnotation(ExcelProperty.class);
        String resValue = value;
        if (annotation != null) {
            String[] value1 = annotation.value();
            String name = value1[value1.length-1];
            if(name.contains("handler")){
                resValue = value.replaceAll("[0123456789]", "*");
            }
        }
        WriteCellData<String> res = new WriteCellData<>(resValue);
		
        
        return res;
    }

// 查看registerWriteHandler方法，發(fā)現(xiàn)這個WriteHandler 的調(diào)用更像是一個鏈路，所以不用擔心覆蓋，可以注冊多個CustomWriteHandler 
   public T registerWriteHandler(WriteHandler writeHandler) {
        if (parameter().getCustomWriteHandlerList() == null) {
            parameter().setCustomWriteHandlerList(new ArrayList<WriteHandler>());
        }
        parameter().getCustomWriteHandlerList().add(writeHandler);
        return self();
    }


public class CustomWriterHandler implements CellWriteHandler {
// 重寫afterCellDataConverted方法，在數(shù)據(jù)轉(zhuǎn)換處理后對單元格做操作
    @Override
    public void afterCellDataConverted(WriteSheetHolder writeSheetHolder, WriteTableHolder writeTableHolder,WriteCellData<?> cellData, Cell cell, Head head, Integer relativeRowIndex, Boolean isHead) {
    
        if(!isHead){
            int columnIndex = cell.getColumnIndex();
            List<String> strings = writeSheetHolder.getHead().get(columnIndex);
            String s = strings.get(strings.size() - 1);
            if(s.equals("handler")){
                    String stringValue = cellData.getStringValue();
                    String res = stringValue.replaceAll("[0123456789]", "*");
                    cellData.setStringValue(res);
            }
            
            // 下面這種寫法如果碰到自定義Head會空指針，而且這種對數(shù)據(jù)的處理可以的話盡量放到Converter更好
            
            // if(head.getFieldName().equals("handler")){
            //     String stringValue = cellData.getStringValue();
            //     String s = stringValue.replaceAll("[0123456789]", "*");
            //     cellData.setStringValue(s);
            // }
        }
    }
}