1. 程式人生 > >spring jpa動態條件查詢並分頁

spring jpa動態條件查詢並分頁

@GetMapping("/api/listPage")
    @ResponseBody
    public Map<String, Object> listPage(@RequestParam(value = "pageNumber", defaultValue = "1") Integer pageNumber,
                                        @RequestParam(value = "pageSize", defaultValue = "100") Integer pageSize,
                                        @RequestParam("searchName") String searchName, @RequestParam("searchUrl") String searchUrl) {
        //Pageable預設從0開始
        pageNumber = pageNumber <= 0 ? 0 : pageNumber - 1;
        Pageable pageable = new PageRequest(pageNumber, pageSize);
//        Page<Monitor> monitorList = monitorRepository.findMonitorByNameOrUrl(pageable, searchName, urlPath);
        Specification specification = new Specification() {
            @Override
            public Predicate toPredicate(Root root, CriteriaQuery query, CriteriaBuilder cb) {
                List<Predicate> predicates = new ArrayList<>();
                if (StringUtils.isNotBlank(searchName)) {
                    predicates.add(cb.like(root.get("name"), "%" + searchName + "%"));
                }
                if (StringUtils.isNotBlank(searchUrl)) {
                    predicates.add(cb.like(root.get("url"), "%" + searchUrl + "%"));
                }
                return cb.and(predicates.toArray(new Predicate[predicates.size()]));
            }
        };
        Page<Monitor> monitorList = monitorRepository.findAll(specification, pageable);
        Map<String, Object> result = new HashMap<>();
        result.put("total", monitorList.getTotalElements());
        result.put("rows", monitorList.getContent());
        return result;
    }