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。
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<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.3.4.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.example</groupId> <artifactId>springboot-blog</artifactId> <version>0.0.1-SNAPSHOT</version> <name>springboot-blog</name> <description>Blog project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> <exclusions> <exclusion> <groupId>org.junit.vintage</groupId> <artifactId>junit-vintage-engine</artifactId> </exclusion> </exclusions> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
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
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, Integer> {
}ArticleService接口public interface ArticleService {
Page<Article> getArticleWithPage(Integer page, Integer size);
}ArticleServiceImpl实现类@Service
@Slf4j
public class ArticleServiceImpl implements ArticleService {
@Autowired
private ArticleDao articleDao;
@Override
public Page<Article> 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<Article> articles = articleService.getArticleWithPage(page, size);
model.addAttribute("articles", articles);
return "/client/index";
}
}<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<!-- 载入文章头部页面，位置在/client文件夹下的header模板页面，模板名称th:fragment为header -->
<div th:replace="/client/header::header(null,null)"/>
<body>
<div class="am-g am-g-fixed blog-fixed index-page">
<div class="am-u-md-8 am-u-sm-12">
<!-- 文章遍历并分页展示 : 需要同学们手动完成，基本样式已经给出，请使用th标签及表达式完成页面展示 -->
<div th:each="article:${articles.getContent()}">
<article class="am-g blog-entry-article">
<div class="am-u-lg-6 am-u-md-12 am-u-sm-12 blog-entry-text">
<!-- 文章分类 -->
<span th:text="${article.categories}" class="blog-color" ><a>默认分类</a></span>
<span> </span>
<!-- 发布时间 -->
<span th:text="'发布于 '+ ${article.created}"/>
<h3>
<!-- 文章标题 -->
<div><a th:text="${article.title}"/>
</div>
</h3>
<!-- 文章内容-->
<div th:text="${article.content}"/>
</div>
</article>
</div>
<div class="page">
<a th:href="@{/article/index}">首页</a>
<a th:href="@{/article/index(page = ${articles.hasPrevious()} ? ${articles.getNumber() } : 1)}">上一页</a>
<a th:href="@{/article/index(page = ${articles.hasNext()} ? ${articles.getNumber()} + 2 : ${articles.totalPages})}">下一页</a>
<a th:href="@{/article/index(page = ${articles.totalPages})}">尾页</a></p>
</div>
</div>
<!-- 博主信息描述 -->
<div class="am-u-md-4 am-u-sm-12 blog-sidebar">
<div class="blog-sidebar-widget blog-bor">
<h3 class="blog-text-center blog-title"><span>子慕</span></h3>
<img th:src="@{/assets/img/me.jpg}" alt="about me" class="blog-entry-img"/>
<p>
Java后台开发
</p>
<p>个人博客小站，主要发表关于Java、Spring、Docker等相关文章</p>
</div>
<div class="blog-sidebar-widget blog-bor">
<h3 class="blog-text-center blog-title"><span>联系我</span></h3>
<p>
<a><span class="am-icon-github am-icon-fw blog-icon"></span></a>
<a><span class="am-icon-weibo am-icon-fw blog-icon"></span></a>
</p>
</div>
</div>
</div>
</body>
<!-- 载入文章尾部页面，位置在/client文件夹下的footer模板页面，模板名称th:fragment为footer -->
<div th:replace="/client/footer::footer"/>
</html>
以上就是springboot中怎么利用Jpa 实现分页功能，小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注亿速云行业资讯频道。
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