<!--分页 pagehelper -->

  <dependency>

       <groupId>com.github.pagehelper</groupId>

       <artifactId>pagehelper-spring-boot-starter</artifactId>

       <version>1.2.5</version>

   </dependency>

<dependency>

            <groupId>org.mybatis.spring.boot</groupId>

            <artifactId>mybatis-spring-boot-starter</artifactId>

            <version>2.1.1</version>

</dependency>

#pagehelper分页插件配置

pagehelper.helperDialect=mysql

pagehelper.reasonable=true

pagehelper.supportMethodsArguments=true

pagehelper.params=count=countSql

@Service

public class UserService2 {

    @Autowired

    private UserDao userDao;

    public PageInfo<User> queryAll(Integer page, Integer pageSize ){

        PageHelper.startPage(page,pageSize);//分页起始码以及每页页数

        List<User> users=userDao.selectAll();

        PageInfo pageInfo=new PageInfo(users);

        return pageInfo;

    }

@Controller

public class UserController2 {

    @Autowired

    private UserService2 userService2;

    @RequestMapping("queryAll")

    @ResponseBody

    public List<User> query(@RequestParam(value="page",defaultValue="1")Integer page, @RequestParam(value="pageSize",defaultValue="2")Integer pageSize){

        PageInfo<User> pageInfo=userService2.queryAll(page,pageSize);

        return pageInfo.getList();

    }

}