SpringBoot整合pagehelper
pagehelper相关知识了解
PageHelper.startPage(int PageNum,int PageSize)：用来设置页面的位置和展示的数据条目数，我们设置每页展示5条数据。PageInfo用来封装页面信息，返回给前台界面。PageInfo中的一些我们需要用到的参数如下表：
| 相关属性 | 说明 |
|---|---|
| PageInfo.list | 结果集 |
| PageInfo.pageNum | 当前页码 |
| PageInfo.pageSize | 当前页面显示的数据条目 |
| PageInfo.pages | 总页数 |
| PageInfo.total | 数据的总条目数 |
| PageInfo.prePage | 上一页 |
| PageInfo.nextPage | 下一页 |
| PageInfo.isFirstPage | 是否为第一页 |
| PageInfo.isLastPage | 是否为最后一页 |
| PageInfo.hasPreviousPage | 是否有上一页 |
| PageHelper.hasNextPage | 是否有下一页 |
| navigatepageNums | 所有导航页号（数组） |
1、导入依赖
<!-- Springboot -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<!-- Springweb-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- 分页插件pagehelper -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper-spring-boot-starter</artifactId>
<version>1.2.13</version>
</dependency>
<!-- lombok -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<!-- druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.0</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.6</version>
</dependency>
<!-- mysql-connector -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.19</version>
</dependency>
<!-- mysql-connector -->
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper-spring-boot-starter</artifactId>
<version>2.0.2</version>
</dependency>
<!--spring-boot-starter-jdbc -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
2、配置文件
#分页插件
pagehelper.helper-dialect=mysql
pagehelper.params=count=countSql
pagehelper.reasonable=true
pagehelper.support-methods-arguments=true
spring.datasource.url=jdbc:mysql://192.168.150.130:3306/pagehelper?useUnicode=true&characterEncoding=utf8&serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=123
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
/**
* 数据库配置类
*/
@Configuration
public class DataSourceConfig {
@ConfigurationProperties(prefix = "spring.datasource")
@Bean
public DataSource druidDataSource(){
return new DruidDataSource();
}
}
3、Sql
CREATE TABLE `user` (
`id` int(11) DEFAULT NULL,
`name` varchar(32) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8
insert into user(id, name) values('1','毕淑儒');
insert into user(id, name) values('2','蔡兴熙');
insert into user(id, name) values('3','曾三杰');
insert into user(id, name) values('4','常元琴');
insert into user(id, name) values('5','陈栋芬');
insert into user(id, name) values('6','陈宁婷');
insert into user(id, name) values('7','陈瑞');
insert into user(id, name) values('8','陈武宵');
insert into user(id, name) values('9','陈晓丽');
insert into user(id, name) values('10','陈翼涛');
insert into user(id, name) values('11','陈宇然');
insert into user(id, name) values('12','陈震');
insert into user(id, name) values('13','程太君');
insert into user(id, name) values('14','程玉娜');
insert into user(id, name) values('15','丛贺轩');
insert into user(id, name) values('16','戴国宇');
insert into user(id, name) values('17','戴杰亮');
insert into user(id, name) values('18','丁玉华');
insert into user(id, name) values('19','董秋明');
insert into user(id, name) values('20','董政厚');
insert into user(id, name) values('21','杜玉焱');
4、控制器
@Controller
public class UserController {
@Autowired
private UserService userService;
@RequestMapping("/getAllUser")
public String getAllUser(
@RequestParam(value = "pageNum",defaultValue = "1")
Integer pageNum,
Model model
){
//注意：一定要先分页，确定好每页显示的数据个数，再查询数据
PageHelper.startPage(pageNum,5);
List<User> userList = userService.getAllUser();
PageInfo<User> pageInfo = new PageInfo<>(userList);
model.addAttribute("pageInfo",pageInfo);
return "index";
}
}
5、页面
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<div align="center">
<table border="1">
<tr>
<th>id</th>
<th>name</th>
</tr>
<tr th:each="user:${pageInfo.list}">
<td th:text="${user.id}"></td>
<td th:text="${user.name}"></td>
</tr>
</table>
<p>当前 <span th:text="${pageInfo.pageNum}"></span> 页,总 <span th:text="${pageInfo.pages}"></span> 页,共 <span th:text="${pageInfo.total}"></span> 条记录</p>
<a th:href="@{/getAllUser}">首页</a>
<a th:href="@{/getAllUser(pageNum=${pageInfo.hasPreviousPage}?${pageInfo.prePage}:1)}">上一页</a>
<a th:href="@{/getAllUser(pageNum=${pageInfo.hasNextPage}?${pageInfo.nextPage}:${pageInfo.pages})}">下一页</a>
<a th:href="@{/getAllUser(pageNum=${pageInfo.pages})}">尾页</a>
</div>
</body>
</html>
附加
Pagehelper整合bootstrap
遍历导航页，效果如同下图：
<nav aria-label="Page navigation" align="center">
<ul class="pagination" >
<li>
<a th:href="@{/getAllUser(pageNum=${pageInfo.hasPreviousPage}?${pageInfo.prePage}:1)}" aria-label="Previous">
<span aria-hidden="true">«</span>
</a>
</li>
<li th:class="${pageNums == pageInfo.pageNum}?'active':''" th:each="pageNums : ${pageInfo.navigatepageNums}">
<a th:href="@{/getAllUser(pageNum=${pageNums})}" th:if="${pageNums != pageInfo.pageNum}" th:text="${pageNums}"></a>
<span th:if="${pageNums == pageInfo.pageNum}" th:text="${pageNums}"></span>
</li>
<li>
<a th:href="@{/getAllUser(pageNum=${pageInfo.hasNextPage}?${pageInfo.nextPage}:${pageInfo.pages})}" aria-label="Next">
<span aria-hidden="true">»</span>
</a>
</li>
</ul>
</nav>
来源：oschina
链接：https://my.oschina.net/duanqwei/blog/3190384