springboot 0-1之pagehelper分页

1、pom.xml安装依赖

<dependency><groupId>com.github.pagehelper</groupId><artifactId>pagehelper-spring-boot-starter</artifactId><version>1.2.10</version></dependency>

2、配置
application.yml

pagehelper:helper-dialect: mysqlreasonable: truesupport-methods-arguments: true

resource/mybatis-config.xml

<plugins><plugin interceptor="com.github.pagehelper.PageInterceptor"><property name="helperDialect" value="mysql"/></plugin>
</plugins>

3、启动类

@SpringBootApplication(exclude = PageHelperAutoConfiguration.class)

排除自动化配置，否则运行时会提示：在系统中发现了多个分页插件，请检查系统配置!
4、使用
controller

import com.github.pagehelper.Page;
import com.github.pagehelper.PageInfo;@PostMapping("/findListByPage")public BaseResponse findListByPage(@Validated @RequestBody BasePage req, BindingResult results){Page listParam = new Page(req.getPageNum(), req.getPageSize());PageInfo<User> pageInfo = userService.findListByPage(listParam);return BaseResponse.success(pageInfo);}

获取分页数据

@Override
public PageInfo<User> findListByPage(Page listParam) {// 两种方法// 方法一：// 注意引入顺序，startPage调用完之后需要立即调用sql，否则会导致分页无法结束，下次调用sql拼接limit// 设置分页参数PageHelper.startPage(listParam.getPageNum(),listParam.getPageSize(), true);// 进行分页查询List<User> userList = userMapper.findListByPage();// 获取分页信息PageInfo<User> pageInfo = new PageInfo<>(userList);return pageInfo;// 方法二：return PageHelper.startPage(listParam.getPageNum(), listParam.getPageSize()).doSelectPageInfo(() -> userDao.findListByPage());
}