package com.taotao.service.impl;import java.util.List;import org.omg.CORBA.PUBLIC_MEMBER;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;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;
@Service
public class ItemServiceImpl implements ItemService{
@Autowiredprivate TbItemMapper itemMapper;public TbItem getItemById(long itemId) {//TbItem item = itemMapper.selectByPrimaryKey(itemId);//添加查询条件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;}}

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.pojo.*;
import com.taotao.service.*;
@Controller
public class ItemController {@Autowiredprivate ItemService itemService;@RequestMapping("/item/{itemId}")@ResponseBodypublic TbItem getItemById(@PathVariable Long itemId) {TbItem tbItem = itemService.getItemById(itemId);return tbItem;}}

<!-- 如果不添加此节点mybatis的mapper.xml文件都会被漏掉。 --><build><resources><resource><directory>src/main/java</directory><includes><include>**/*.properties</include><include>**/*.xml</include></includes><filtering>false</filtering></resource></resources></build>