本篇文章给大家分享的是有关springboot中怎么利用Jpa 实现分页功能，小编觉得挺实用的，因此分享给大家学习，希望大家阅读完这篇文章后可以有所收获，话不多说，跟着小编一起来看看吧。
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Springboot 集成 Jpa 实现分页
由于用的技术并不复杂，所以我们开门见山，直接上代码
先来看下代码结构
pom.xml 引入相关jar包
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.3.4.RELEASE
com.example
springboot-blog
0.0.1-SNAPSHOT
springboot-blog
Blog project for Spring Boot
1.8
org.springframework.boot
spring-boot-starter-data-jpa
org.springframework.boot
spring-boot-starter-thymeleaf
org.springframework.boot
spring-boot-starter-web
junit
junit
MySQL
mysql-connector-java
runtime
org.projectlombok
lombok
true
org.springframework.boot
spring-boot-starter-test
test
org.junit.vintage
junit-vintage-engine
org.springframework.boot
spring-boot-maven-plugin
application.properties配置
# 配置数据源
spring.datasource.url=jdbc:mysql://localhost:3306/blog_system
spring.datasource.username=root
spring.datasource.password=root
#基本配置
spring.application.name=springboot-blog
server.port=8080
# 显示sql
spring.jpa.show-sql=true
实体类Article
@Data
@ToString
@Entity
@Table(name = "t_article")
public class Article {
@Id
private Integer id;
@Column(name = "title")
private String title;
@Column(name = "content")
private String content;
@Column(name = "created")
private Date created;
@Column(name = "modified")
private Date modified;
@Column(name = "categories")
private String categories;
@Column(name = "tags")
private String tags;
@Column(name = "allow_comment")
private Integer allowComment;
@Column(name = "thumbnail")
private String thumbnail;
}ArticleDao层实现
public interface ArticleDao extends JpaRepository {
}
Article Service 层
ArticleService接口
public interface ArticleService {
Page getArticleWithPage(Integer page, Integer size);
}ArticleServiceImpl实现类
@Service
@Slf4j
public class ArticleServiceImpl implements ArticleService {
@Autowired
private ArticleDao articleDao;
@Override
public Page getArticleWithPage(Integer page, Integer size) {
log.info("page is {}, size is {}", page, size);
if (page <= 0) {
page = 1;
}
Pageable pageRequest = PageRequest.of(page - 1, size);
return articleDao.findAll(pageRequest);
}
}ArticleController 控制层实现
@Controller
@Slf4j
@RequestMapping("/article")
public class ArticleController {
@Autowired
private ArticleService articleService;
@RequestMapping("/index")
public String toIndex(Model model,
@RequestParam(value = "page", defaultValue = "1") Integer page,
@RequestParam(value = "size", defaultValue = "3") Integer size) {
Page articles = articleService.getArticleWithPage(page, size);
model.addAttribute("articles", articles);
return "/client/index";
}
}页面核心代码
默认分类
