spring 中的分页在我使用 findAllBy 包含和忽略大小写时不起作用？

Question

有人可以向我解释为什么我的代码不起作用吗？我正在尝试创建一个按名称搜索食谱的端点。

当我尝试 return 列表时，我的代码有效。它 return 是正确的搜索结果：

@ResponseStatus(HttpStatus.OK)
@GetMapping(path = "api/v1/recipe", params = {"page", "size", "name"})
public List<Recipe> fetchAllRecipes(
    @RequestParam(name = "page", required = true) Integer page,
    @RequestParam(name = "size", required = true) Integer size,
    @RequestParam(name = "name", required = true) String name
) {
    return recipeRepository.findAllByNameContainingIgnoreCaseAndStatus(name, RecipeStatus.UPDATED);
}

然而，当我尝试对其进行分页时，内容总是空的：

@ResponseStatus(HttpStatus.OK)
@GetMapping(path = "api/v1/recipe", params = {"page", "size", "name"})
public Page<Recipe> fetchAllRecipes(
    @RequestParam(name = "page", required = true) Integer page,
    @RequestParam(name = "size", required = true) Integer size,
    @RequestParam(name = "name", required = true) String name
) {
    Pageable pageRequest = PageRequest.of(page, size, Sort.Direction.ASC, "id");
    return recipeRepository.findAllByNameContainingIgnoreCaseAndStatus(name, RecipeStatus.UPDATED, pageRequest);
}

回复：

{
  "content": [],
  "pageable": {
    "sort": {
      "sorted": true,
      "unsorted": false,
      "empty": false
    },
    "pageNumber": 1,
    "pageSize": 10,
    "offset": 10,
    "paged": true,
    "unpaged": false
  },
  "last": true,
  "totalPages": 1,
  "totalElements": 2,
  "first": false,
  "sort": {
    "sorted": true,
    "unsorted": false,
    "empty": false
  },
  "number": 1,
  "numberOfElements": 0,
  "size": 10,
  "empty": true
}

以下是我正在使用的依赖项：

    'org.springframework.boot:spring-boot-starter'
    'org.springframework.boot:spring-boot-starter-web'
    'org.springframework.boot:spring-boot-starter-data-jpa'
    'org.springframework.boot:spring-boot-starter-test'

Answer 1

PageRequest 的页面索引是 zero-based，这就是为什么所有 2 个现有元素都在页面 0 和页面上1 为空。

https://docs.spring.io/spring-data/commons/docs/current/api/org/springframework/data/domain/PageRequest.html#of-int-int-org.springframework.data.domain.Sort-

spring 中的分页在我使用 findAllBy 包含和忽略大小写时不起作用？

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