spring data jpa 多条件查询 + 分页 + 排序

import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.jpa.domain.Specification;

public Page<RuleLogInfoDTO> findPageByParam(final QueryRuleLogParam param) {
　　　　　//分页加排序
        Pageable page = PageRequest.of(param.getPageIndex() - 1 , param.getPageSize(),Sort.by(Sort.Order.desc("dateCreate")));
        //动态条件
        Specification<OperateLogDO> specification = (Specification<OperateLogDO>) (root, query, criteriaBuilder) -> {
            List<Predicate> list = new ArrayList<>();
            if (ObjectUtil.isNotNull(param.getRuleId())){
　　　　　　　　// 等于查询
                list.add(criteriaBuilder.equal(root.get("resourceId"),param.getRuleId()));
            }
            if (ObjectUtil.isNotEmpty(param.getRuleName())){
　　　　　　　　　　// like查询
                list.add(criteriaBuilder.like(root.get("logInfo"),"%" + param.getRuleName()+ "%"));
            }
            if (CollectionUtils.isNotEmpty(list)){
                Predicate[] p = new Predicate[list.size()];
                return criteriaBuilder.and(list.toArray(p));
            }
            return null;
        };
　　　　  org.springframework.data.domain.Page<OperateLogDO> pageLogInfo = repository.findAll(specification,page);

        return pageLogInfo;

}