Fastjson轉換json到帶泛型的對象（如Map）報錯解決

        List<CategoryDTO> categoryList = null;
        String categoryStr = redisService.get(RedisKeyConstant.CMS_CATEGORY);
        if (StringUtil.isNotBlank(categoryStr)) {
            categoryList = JSON.parseObject(categoryStr, new TypeReference<List<CategoryDTO>>(){});
        }for(CategoryDTO category:categoryList){
        }

List<CategoryDTO> categoryList = null;
String categoryStr = redisService.get(RedisKeyConstant.CMS_CATEGORY);
if (StringUtil.isNotBlank(categoryStr)) {
    categoryList = JSON.parseObject(categoryStr, new ArrayList<CategoryDTO>().getClass());
}
return categoryList;

https://blog.csdn.net/zzzgd_666/article/details/96431040