如何用java实现分页查询

select * from user where id limit a, b

public @Data
class PageBean<T> implements Serializable {
  private Integer page;//当前页数
  private Integer limit;//每页显示数
  private Integer totalPage;//总页数
  private Integer total;//总记录数
  private List<T> pageRecode;//当前页面的数据集合
  private List<Integer> pages;//返回页数的集合，用于显示index页面的上一页、下一页
}

PageBean<QuestionDTO> pageBean = questionService.questionList(page);

public @Data
class QuestionDTO {
  private Integer id;
  private String title;
  private String description;
  private Long gmtCreate;
  private Long GmtModified;
  private Integer creator;
  private Integer attentionCount;
  private Integer viewCount;
  private Integer likeCount;
  private String tag;
  private User user;
  
}

   //查询所有的问题回显到index页面
  public PageBean<QuestionDTO> questionList(Integer page) {
    List<QuestionDTO> list = new ArrayList<>();
    PageBean<QuestionDTO> pagesinfo = new PageBean<>();
    //1.设置limit
    Integer limit = 5;
    pagesinfo.setLimit(limit);
    //2.设置总记录数
    Integer total = questionMapper.fingCount();
    pagesinfo.setTotal(total);
    //3.设置总的页数
    Integer totalPage;
    if(total % limit == 0){
      totalPage = total / limit;
    }else{
      totalPage = total / limit + 1;
    }
    pagesinfo.setTotalPage(totalPage);
    //4.设置页数的集合
    List<Integer> pages = new ArrayList<>();
    for(int i=1;i<totalPage+1;i++){
      pages.add(i);
    }
    pagesinfo.setPages(pages);
    //5.设置每页的数据集合
    List<Question> questions = questionMapper.questionList(page,limit);
    for(Question question : questions){
      User user = userMapper.findById(question.getCreatar());
      QuestionDTO questionDTO = new QuestionDTO();
      BeanUtils.copyProperties(question,questionDTO);
      questionDTO.setUser(user);
      list.add(questionDTO);
    }
    pagesinfo.setPageRecode(list);
    return pagesinfo;
  }

  //查询所有的问题并回显到index页面
  @Select("select * from question where id limit #{page},#{limit}")
  List<Question> questionList(Integer page, Integer limit);

  //查询总的问题数
  @Select("select count(id) from question")
  Integer fingCount();

 <!-- 分页 -->
      <nav aria-label="Page navigation" th:align="right">
        <ul class="pagination">
          <li th:if="${pageBean.totalPage>5 || pageBean.totalPage==1}">
            <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" aria-label="Previous">
              <span aria-hidden="true">&laquo;</span>
            </a>
          </li>
          <li th:each="page:${pageBean.pages}"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" th:text="${page}"></a></li>
          <li>
            <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" aria-label="Next" th:if="${pageBean.totalPage>5}">
              <span aria-hidden="true">&raquo;</span>
            </a>
          </li>
        </ul>
      </nav>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
    PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
    "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>

  <context id="DB2Tables" targetRuntime="MyBatis3">

    <!-- 生成带有分页方法的插件-->
    <plugin type="org.mybatis.generator.plugins.RowBoundsPlugin"></plugin>

    <!-- 连接数据库的基本信息 -->
    <jdbcConnection driverClass="com.mysql.jdbc.Driver"
            connectionURL="jdbc:mysql://localhost:3306/community?characterEncoding=utf-8&amp;serverTimezone=UTC"
            userId="root"
            password="root">
      <property name="nullCatalogMeansCurrent" value="true"/>
    </jdbcConnection>

    <javaTypeResolver >
      <property name="forceBigDecimals" value="false" />
    </javaTypeResolver>
    <!-- 生成的实体类
      targetPackage:实体类存放的包名
      targetProject:项目地址（到java）
    -->
    <javaModelGenerator targetPackage="cn.fzkj.community.domain" targetProject="src/main/java">
      <property name="enableSubPackages" value="true" />
      <property name="trimStrings" value="true" />
    </javaModelGenerator>
    <!--生成的xml映射文件 -->
    <sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources">
      <property name="enableSubPackages" value="true" />
    </sqlMapGenerator>
    <!-- 生成的mapper接口 -->
    <javaClientGenerator type="XMLMAPPER" targetPackage="cn.fzkj.community.mapper" targetProject="src/main/java">
      <property name="enableSubPackages" value="true" />
    </javaClientGenerator>
    <!-- 表名，想生成的实体类的名称 -->
    <table tableName="question" domainObjectName="Question" ></table>
    <table tableName="user" domainObjectName="User" ></table>
    <table tableName="comment" domainObjectName="Comment" ></table>
    <table tableName="notification" domainObjectName="Notification" ></table>

  </context>
</generatorConfiguration>

    QuestionExample example = new QuestionExample();
    example.createCriteria().
        andCreatorEqualTo(id);
    List<Question> questions = questionMapper.selectByExampleWithRowbounds(example, new RowBounds(page,limit));