控制层

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@RequestMapping("/allUser")
public ModelAndView listByPages(@RequestParam(value = "pageNum", defaultValue = "1") Integer pageNum) {
    ModelAndView mav = new ModelAndView();
    Sort sort = Sort.by(Sort.Direction.ASC, "id");
    Pageable pageable = PageRequest.of(pageNum - 1, 4, sort); //页数、每页大小、排序方法
    Page<User> users = userService.findAll(pageable);
    mav.addObject("allUser", users);
    mav.setViewName("allUser");
    return mav;

}

业务层

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@Override
public Page<User> findAll(Pageable pageable) {
    return userDao.findAll(pageable);
}