//获取动态条件的集合
List<Long> list = new ArrayList<Long>();

        Long sysUserId = currentUser.getSysUserId();

        if (sysUserId != null) {

            SysUser sysUser = sysUserRepository.findOne(sysUserId);

            if (sysUser != null) {

                String groupItemIds = sysUser.groupItemIds();

                if (groupItemIds != null && !groupItemIds.isEmpty()) {

                    String[] str = StringUtils.split(groupItemIds,",");

                    for (String s : str) {

                        if (s != null && !s.isEmpty() && s != "") {

                            list.add(Long.valueOf(s));

                        }

                    }

                }

            }

        }

//封装Specification查询条件
Specification<Goods> spec = (root, query, cb) -> {

            List<Predicate> predicates = new ArrayList<Predicate>();

            List<Predicate> preList = new ArrayList<Predicate>();

            if (list != null && list.size()>0) {

                    preList.add(root.<Long>get("groupItemId").in(list));

               }

           if (sysUserId != null) {

                 Predicate predicate = cb.equal(root.get(Goods_.crtUserId), sysUserId);

                 preList.add(predicate);

           }

                Predicate p = cb.or(preList.toArray(new Predicate[preList.size()]));

                predicates.add(p);

            if (!predicates.isEmpty()) {

                return cb.and(predicates.toArray(new Predicate[0]));

            } else {

                return null;

            }

        };

        Page<Goods> pageresult = goodsRepository.findAll(spec, pageable);