代码实现
List<JpProductExt> jpProductExtList = jpProductMapperExt.getProductListByIName(jpIngredients.getIngredientsName()); List<Integer> ids = new ArrayList<>(); List<JpProductExt> jpProductList = jpProductExtList.stream().filter( v -> { boolean flag = !ids.contains(v.getProductClassifyId()); ids.add(v.getProductClassifyId()); return flag; } ).collect(Collectors.toList());