关于JPA动态SQL查询

1.继承接口

2.下面是简单的操作---自己写过的,下次再整理一下

    public Page<IdddsMember> list(MemberSearch search, Pageable pageable) {
        Page<IdddsMember> page = memberRepository.findAll((root, query, cb) -> {
            List<Predicate> predicates = new ArrayList<>();
            //groupId
            if (StringUtils.isNotEmpty(search.getSearchGroupId())) {
                predicates.add((cb.equal(root.get("idddsMemberGroup").get("id"), search.getSearchGroupId())));
            } else {
                CriteriaBuilder.In<String> in = cb.in(root.get("idddsMemberGroup").get("id"));
                List<String> groupIdList = memberGroupRepository.findIdsByStatus(StatusEnum.normal.getDesc());
                for (String str : groupIdList) {
                    in.value(str);
                }
                predicates.add(in);
            }
            //role角色
            if (StringUtils.isNoneBlank(search.getSearchRole())) {
                predicates.add((cb.equal(root.get("role"), search.getSearchRole())));
            }
            //status状态
            if (StringUtils.isNoneBlank(search.getSearchStatus())) {
                predicates.add((cb.equal(root.get("status"), search.getSearchStatus())));
            }
            //名字，公司模糊查询
            if (StringUtils.isNoneBlank(search.getSearchName())) {
                predicates.add((cb.like(root.get("trueName"), "%" + search.getSearchName() + "%")));
            }
            if (StringUtils.isNoneBlank(search.getSearchOrganization())) {
                predicates.add((cb.like(root.get("organization"), "%" + search.getSearchOrganization() + "%")));
            }
            //时间，这里是个坑，数据库字段为created_time
            if (search.getStart() != null) {
                predicates.add(cb.greaterThanOrEqualTo(root.get("createdTime"), DateUtils
                        .parseDate(DateUtils.formatDate(search.getStart(), "yyyy-MM-dd") + " 00:00:00")));
            }
            if (search.getEnd() != null) {
                predicates.add(cb.lessThanOrEqualTo(root.get("createdTime"), DateUtils
                        .parseDate(DateUtils.formatDate(search.getEnd(), "yyyy-MM-dd") + " 23:59:59")));
            }
            query.where(predicates.toArray(new Predicate[]{}));
            //排序
            if (StringUtils.isNoneBlank(search.getOrderBy())) {
                if ("desc".equals(search.getSortType())) {
                    //倒序
                    query.orderBy(cb.desc(root.get(search.getOrderBy())));
                } else {
                    //正序
                    query.orderBy(cb.asc(root.get(search.getOrderBy())));
                }
            }
            return null;
        }, pageable);
        return page;
    }