本篇文章給大家分享的是有關(guān)springboot中怎么利用Jpa 實(shí)現(xiàn)分頁(yè)功能，小編覺(jué)得挺實(shí)用的，因此分享給大家學(xué)習(xí)，希望大家閱讀完這篇文章后可以有所收獲，話(huà)不多說(shuō)，跟著小編一起來(lái)看看吧。
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Springboot 集成 Jpa 實(shí)現(xiàn)分頁(yè)
由于用的技術(shù)并不復(fù)雜，所以我們開(kāi)門(mén)見(jiàn)山，直接上代碼
先來(lái)看下代碼結(jié)構(gòu)
pom.xml 引入相關(guān)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
# 配置數(shù)據(jù)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
# 顯示sql
spring.jpa.show-sql=true
實(shí)體類(lèi)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層實(shí)現(xiàn)
public interface ArticleDao extends JpaRepository {
}
Article Service 層
ArticleService接口
public interface ArticleService {
Page getArticleWithPage(Integer page, Integer size);
}ArticleServiceImpl實(shí)現(xiàn)類(lèi)
@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 控制層實(shí)現(xiàn)
@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";
}
}頁(yè)面核心代碼
默認(rèn)分類(lèi)
