好好编程-物流项目16【基础数据-修改和删除】

@RequestMapping("/basicUpdate")
public String basicUpdate(Integer id,Model m){
	basicService.getUpdateInfo(id,m);
	return "basic/basicUpdate";
}

@Override
public void getUpdateInfo(Integer id, Model m) {
	BasicDataExample example = new BasicDataExample();
	example.createCriteria().andParentIdIsNull();
	// 查询所有的父类型
	List<BasicData> parents = basicDataMapper.selectByExample(example );
	m.addAttribute("parents", parents);
	if(id != null && id > 0){
		// 表示是更新数据，根据id查询出对应的数据信息
		BasicData data = basicDataMapper.selectByPrimaryKey(id);
		m.addAttribute("basic", data);
	}
}

<form action="/basic/saveOrUpdate">
	<ul class="forminfo">
		<input type="hidden" name="baseId" value="${basic.baseId }">
		<li><label>基础数据</label>
			<input name="baseName"  type="text"  value="${basic.baseName }"
			class="dfinput" />
			<i>基础数据不能超过30个字符</i>
		</li>
		<li><label>描述</label>
			<input name="baseDesc" type="text" value="${basic.baseDesc }"
			class="dfinput" />
		</li>
		
		<li><label>所属类型</label>
			
			<div class="vocation">
			    <select class="select1" name="parentId">
			    <option value="0">--本身就是大类--</option>
			    <c:forEach items="${ parents}" var="parent">
			    	<option value="${parent.baseId }" ${parent.baseId eq basic.parentId?"selected":"" }>
			    		${parent.baseName }
			    	</option>
			    </c:forEach>
			    </select>
			</div>
			<i></i>
		</li>
		
		<li><label>&nbsp;</label>
			<input name="" type="submit"
			class="btn" value="确认保存" /></li>
		</ul>
</form>

@RequestMapping("/saveOrUpdate")
public String saveOrUpdate(BasicData bd){
	if(bd.getParentId()==0){
		bd.setParentId(null);
	}
	if(bd.getBaseId()!=null && bd.getBaseId() > 0){
		// 表示更新数据
		basicService.updateBasicData(bd);
	}else{
		// 表示添加数据
		basicService.addBasicData(bd);
	}
	return "redirect:/basic/query";
}

@RequestMapping("/delete")
public String delete(Integer id){
	basicService.deleteBasicData(id);
	return "redirect:/basic/query";
}

@Override
public void deleteBasicData(int id) {
	basicDataMapper.deleteByPrimaryKey(id);
}

 <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
   delete from t_basicdata
   where base_id = #{baseId,jdbcType=INTEGER}
   		or parent_id = #{baseId,jdbcType=INTEGER}
 </delete>