商品管理service和controller

package com.taotao.service.impl;


import java.util.List;


import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;


import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.taotao.common.pojo.EUDataGridResult;
import com.taotao.mapper.TbItemMapper;
import com.taotao.pojo.TbItem;
import com.taotao.pojo.TbItemExample;
import com.taotao.pojo.TbItemExample.Criteria;
import com.taotao.service.ItemService;
/*
 * 
 * 商品管理service
 */
@Service
public class ItemServiceImpl implements ItemService {
@Autowired
private TbItemMapper itemMapper;


@Override
public TbItem getItemById(long itemId) {

/*方法一*/
// TbItem item = itemMapper.selectByPrimaryKey(itemId);

//添加查询条件,方法二
TbItemExample example = new TbItemExample();
Criteria criteria = example.createCriteria();

criteria.andIdEqualTo(itemId);
List<TbItem> list = itemMapper.selectByExample(example);

if(list != null && list.size() > 0){

TbItem item = list.get(0);
return item;


}

return null;

}

//商品列表查询


@Override
public EUDataGridResult getItemList(int page, int rows) {

//查询商品信息
TbItemExample example = new TbItemExample();

//分页处理
PageHelper.startPage(page,rows);
List<TbItem> list = itemMapper.selectByExample(example);

//创建一个返回值类型对象
EUDataGridResult rusult = new EUDataGridResult();
rusult.setRows(list);

//取记录总条数

PageInfo<TbItem> pageInfo = new PageInfo<>(list);
rusult.setTotal(pageInfo.getTotal());

return rusult; 
}

}

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////

package com.taotao.controller;


import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;


import com.taotao.common.pojo.EUDataGridResult;
import com.taotao.pojo.TbItem;
import com.taotao.service.ItemService;


/*
 * 商品管理controller
 */
@Controller
public class ItemController { 

@Autowired
private ItemService itemService;

@RequestMapping("/item/{itemId}")
@ResponseBody
public TbItem getItemById(@PathVariable Long itemId){

TbItem tbItem = itemService.getItemById(itemId);
return tbItem;
}

@RequestMapping("/item/list")
@ResponseBody

public EUDataGridResult getItemList(Integer page, Integer rows){

EUDataGridResult result = itemService.getItemList(page, rows);

return result;


}





}