java分頁查詢代碼

service 接口代碼

PageInfo<Product> findByPage2(Integer currPage, Integer pageSize);

service實現類代碼

public PageInfo<Product> findByPage2(Integer currPage, Integer pageSize) {
    PageHelper.startPage(currPage,pageSize);
    List<Product> productList = productDao.findAll();

    PageInfo<Product> pageInfo = new PageInfo<Product>(productList,3);

    return pageInfo;
}

controller控制層代碼

@RequestMapping("/findAll2")
public ModelAndView findAll2(@RequestParam(value = "currPage", defaultValue = "1") Integer currPage,
                             @RequestParam(value = "pageSize", required = false, defaultValue = "3") Integer pageSize) {
    //  准備分頁數據
    PageInfo<Product> pageInfo = productService.findByPage2(currPage, pageSize);
    ModelAndView modelAndView = new ModelAndView();
    modelAndView.addObject("pageInfo", pageInfo);
    // 指定頁面
    modelAndView.setViewName("product-listhelper");
    return modelAndView;
}