When easyexcel uses converter conversion to inject nullpoint exception

Use EasyExcel The fields in the report are converted during import and Export

 @Override
    public CellData convertToExcelData(String code, ExcelContentProperty excelContentProperty, GlobalConfiguration globalConfiguration) throws Exception {
    
        if(StringUtils.isBlank(code)){
    
            return new CellData("");
        }else {
    
            try {
    
                RedisUtils redisUtils = SpringUtil.getBean(RedisUtils.class);
                String s = redisUtils.get("WYM" + code);
                log.info(" Company ：" + s);
                return new CellData(s);
            }catch (Exception e){
    
                log.error(" error ",e);
                return new CellData(code);
            }
        }
    }

Here I need to use RedisUtils, At first I used it directly @Autowired Annotation, but always report null pointer , The problem can be solved by changing the above method to inject