ページ実装

せいぎょそうち

 // 로그인한 회원이 등록한 상품들 조회
    @GetMapping("/api/products")
    public Page getProducts(
            @RequestParam("page") int page,
            @RequestParam("size") int size,
            @RequestParam("sortBy") String sortBy,
            @RequestParam("isAsc") boolean isAsc,
            @AuthenticationPrincipal UserDetailsImpl userDetails
    ) {
        Long userId = userDetails.getUser().getId();
        page = page - 1;
        return productService.getProducts(userId, page , size, sortBy, isAsc);
    }

サービス

public Page getProducts(Long userId, int page, int size, String sortBy, boolean isAsc) {
        Sort.Direction direction = isAsc ? Sort.Direction.ASC : Sort.Direction.DESC;
        Sort sort = Sort.by(direction, sortBy);
        Pageable pageable = PageRequest.of(page, size, sort);

        return productRepository.findAllByUserId(userId, pageable);
    }
    

きろく

public interface ProductRepository extends JpaRepository< Product, Long> {
Page findAllByUserId(Long userId, Pageable pageable);
}

Dtoの

 @Transactional
    public List getPagePlan1(int p){
        int page = p - 1;
//        Sort.Direction direction = Sort.Direction.DESC;
        Sort sort = Sort.by(Sort.Direction.ASC, "createdAt");
        Pageable pageable = PageRequest.of(page, 5, sort);
        Page planPage = planRepository.findAll(pageable);

        // 실험
        Pageable pageable1 = planPage.getPageable();
        long totalElements = planPage.getTotalElements();
        boolean last = planPage.isLast();
        int totalPages = planPage.getTotalPages();
        int number = planPage.getNumber();
        int size = planPage.getSize();
        Sort sort1 = planPage.getSort();
        int numberOfElements = planPage.getNumberOfElements();
        boolean first = planPage.isFirst();
        boolean empty = planPage.isEmpty();

        List result = planPage.stream()
                .map(plan -> new PlanAllResponseDto(plan,replyRepository.findAllByPlan(plan)))
                .collect(Collectors.toList());
        
        return result;
    }
    

{
"content": [
{
"createdAt": "2021-07-21T09:12:02.543",
"modifiedAt": "2021-07-21T09:12:02.543",
"planId": 1,
「title」:「テストタイトル1」、
[コンテンツ]:[コンテンツ1],
[planWriter]:[作者],
"planPassword": "1234",
"success": 0
},
{
"createdAt": "2021-07-21T09:12:02.757",
"modifiedAt": "2021-07-21T09:12:02.757",
"planId": 2,
「title」:「テストタイトル2」、
[コンテンツ]:[コンテンツ2],
[planWriter]:[作者],
"planPassword": "1234",
"success": 0
},
{
"createdAt": "2021-07-21T09:12:02.764",
"modifiedAt": "2021-07-21T09:12:02.764",
"planId": 3,
「title」:「テストタイトル3」,
[コンテンツ]:[コンテンツ2],
[planWriter]:[作者],
"planPassword": "1234",
"success": 0
},
],
"pageable": {
"sort": {
"sorted": true,
"unsorted": false,
"empty": false
},
"offset": 0,
"pageNumber": 0,
"pageSize": 5,
"unpaged": false,
"paged": true
},
"totalElements": 7,
"last": false,
"totalPages": 2,
"number": 0,
"size": 5,
"first": true,
"sort": {
"sorted": true,
"unsorted": false,
"empty": false
},
"numberOfElements": 5,
"empty": false
}