輕鬆解決分頁問題 老闆再也不會覺得你工作效率慢

使用PageHelper需要引入jar包。<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>4.2.1</version>
</dependency>
然後在在mybatis-config.xml中新增<!--plugins在settings之後，environments之前-->
<plugins>
<!-- PageHelper4.1.1 -->
<plugin interceptor="com.github.pagehelper.PageHelper">
<property name="dialect" value="mysql"/><!--資料庫方言-->
<!-- 3.3.0版本可用 - 分頁引數合理化，預設false禁用 -->
<!-- 啟用合理化時，如果pageNum<1會查詢第一頁，如果pageNum>pages會查詢最後一頁 -->
<!-- 禁用合理化時，如果pageNum<1或pageNum>pages會返回空資料 -->
<property name="reasonable" value="false"/>
</plugin>
</plugins>

  @RequestMapping("list.html")
    public ModelAndView get(Integer user_id, @RequestParam(value = "pageIndex",required = false,defaultValue = "1") Integer pageIndex){
        System.out.println(pageIndex);

        PageHelper.startPage(pageIndex, 3);//對緊隨其後第一個sql語句有效
        List<BlogRiJi> riJiList = blogRiJiService.getRiJiList(user_id);
        PageInfo<BlogRiJi> page = new
 
 PageInfo<>(riJiList);//把查詢到的集合放入Page中

        return new ModelAndView("riji/list", "page", page);
    }

然後在頁面呼叫即可
下面給出PageInfo類的屬性

 private static final long serialVersionUID = 1L;
    private int pageNum;
    private int pageSize;
    private int size;
    private String orderBy;
    private
 
 int startRow;
    private int endRow;
    private long total;
    private int pages;
    private List<T> list;
    private int prePage;
    private int nextPage;
    private boolean isFirstPage;
    private boolean isLastPage;
    private boolean hasPreviousPage;
    private boolean hasNextPage;
    private int navigatePages;
    private int[] navigatepageNums;
    private int navigateFirstPage;
    private int navigateLastPage;