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# page class () springboot included with jpa

Help us paginate.

Public Page findByDetailid (Long id,Pageable pageable)

The first attribute in parentheses indicates the nature of the arrangement, and the second attribute is to save your paging configuration.

In the controller layer @ RequestMapping ("find/ {id} / {page}") public Page getPageComments (@ PathVariable ("id") Long id,@PathVariable ("page") Integer page) {Pageable pageable = new PageRequest (page, 3, Sort.Direction.ASC, "id"); Page ls=commentRepository.findByDetailid (id,pageable); return ls;}

The first parameter indicates the number of pages, the first page starts at 0, and the second parameter contains several pieces of content.

Sort.Direction.ASC indicates that the sorting direction is from small to large, and the last one is the basis for sorting.

In the browser, you can also help us send out the total number of totalElements: 21 totalPages: 7 last:false, and whether the current page is the last page.

# # class selector class='page-numbers' id=pagenum $(".page-numbers") SpringBoot paging query

Some time ago, the company asked to reconstruct the previous code, so the code related to the company's automatic inspection was refactored using the SpringBoot framework. One of the contents encountered in this process is about the paging query function in SpringBoot using JPA. I will list the more important or error-prone configurations, but the rest of the configurations will not be described in detail:

The configuration content of JPA in yml

The figure shows the simple configuration of JPA. It is worth noting that the configuration of properties.hibernate.dialect:org.hibernate.dialect.Oracle10gDialect is the specified database dialect. If it is not configured, the program will run in error.

Interfaces of the DAO layer

Look at the picture. To achieve paging, you must inherit JpaSpecificationExecutor.

Paging query

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