java分页查询代码

service 接口代码

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

service实现类代码

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控制层代码

@RequestMapping("/findAll2")
public ModelAndView findAll2(@RequestParam(value = "currPage", defaultValue = "1") Integer currPage,
@RequestParam(value = "pageSize", required = false, defaultValue = "3") Integer pageSize) {
// 准备分页数据
PageInfo<Product> pageInfo = productService.findByPage2(currPage, pageSize);
ModelAndView modelAndView = new ModelAndView();
modelAndView.addObject("pageInfo", pageInfo);
// 指定页面
modelAndView.setViewName("product-listhelper");
return modelAndView;
}
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