jsp部分form表单
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt"%>
<c:set var="ctx" value="${pageContext.request.contextPath}"/> //获取项目根目录并取名为ctx 值为${ctx}
<script src="${mygd}/static/js/jquery-1.7.2.js" type="text/javascript"></script> //jquery
<script src="${mygd}/static/js/jquery.html5uploader.js"
type="text/javascript"></script> //上传文件
<form method="post" action="${ctx }/supplie/AddSupplie" class="pageForm required-validate" onsubmit="return validateCallback(this, navTabAjaxDone);">
<div class="pageFormContent" layoutH="56">
<input type="hidden" id="id" name="a" value="${device.id }"/> //隐藏id作为插入数据的条件
<p>
<label style="text-align: right; 140px;">设备类型：${device.devicetypename }</label>
<label style="text-align: right; 220px;">上次操作时间：<fmt:formatDate value='${device.materialupdatetime }' type='date' pattern='yyyy-MM-dd HH:mm:ss'/></label> //取出后台时间并格式化
</p>
<table width="400px" height="50px" border="1px" style="margin-left: 50px;">
<tr>
<th width="100px" align="center">耗材</th>
<th width="150px" align="center">重置数量</th>
<th align="center">使用数量</th>
<th align="center">剩余数量</th>
</tr>
<c:forEach items="${material}" var="ma"> //循环表单部分
<tr class="materTr"> //给tr一个class，js取这个tr并进行循环提交 循环数据部分用each方法
<td align="center"><input type="hidden" id="consumptivematerialname" name="consumptivematerialname" value="${ma.id}"/>${ma.consumptivematerialname }</td>
<td align="center"><input type="text" style="100px;height:15px" id="resetnum" name="resetnum"/></td>
<td align="center">${ma.usedQuantity}</td>
<td align="center">${ma.quantity-ma.usedQuantity}</td>
</tr>
</c:forEach>
</table>
<p>
<label style="text-align: right; 80px;">备注：</label>
<textarea id="add_text" name="text" style=" 280px; height: 60px; border- 1px;"></textarea>
</p>
</div>
<div class="formBar">
<ul>
<li><a class="buttonActive" href="javascript:onclick=saveAdd();" id="btnsumbit"><span>提交</span></a></li>
<li>
<div class="button"><div class="buttonContent"><button type="button" class="close">取消</button></div></div>
</li>
</ul>
</div>
</form>
jquery部分
<script type="text/javascript">
//保存用户信息
function saveAdd(){
var saveDataAry=[]; //定义一个数组
var deviceid=$("#id").val();
$(".materTr").each(function(){
var consumptivematerialname = $(this).find("input[name='consumptivematerialname']").val(); //id是唯一的，所以用name来取循环的值
var resetnum = $(this).find("input[name='resetnum']").val();
if(resetnum==null||resetnum==""){
return;
}
var jsondata ={"deviceid":deviceid,"materialid":consumptivematerialname,"quantity":resetnum}; //拼接json
saveDataAry.push(jsondata); //把循环出来的值放到数组里
});
var data = JSON.stringify(saveDataAry); // //转化为JSON字符串, 与上边参数对应一致 ,可以被@requestbody接收
$.ajax({ //循环完成后再用ajax提交，就不会出现多次提交的现象，之前循环一次，提交一次！！！！
url:'${ctx}/equipment/addSupplies',
type:'post',
cache:false,
data: data,
contentType : 'application/json',
error:function(){
alertMsg.warn('请按照提示正确填写！');
},
success:function(){
$.pdialog.close("addSupplies");
navTab.reloadFlag("equipment");
}
});
}
</script>
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controller部分
// 提交添加耗材
@RequestMapping(value = "/addSupplies", method = RequestMethod.POST)
public String addSupplies(HttpServletRequest request, @RequestBody List<DeviceMaterial> list //list数组来接收循环完成后提交过来的数据 是一个数组
) { //@RequestBody接收的是一个Json对象的字符串，而不是一个Json对象.在前台封装好一个类似SearchDomain的JSON对象，然后调用JSON.stringify(data)将对象转化为JSON字符串，传递至后台即可
for (DeviceMaterial devicematerial : list) { //遍历数组 并保存数据
devicematerial.setUpdatetime(new Date());
devicematerialService.Save(devicematerial);
// 更新时间
Device device = new Device();
device.setId(devicematerial.getDeviceid());
device.setMaterialupdatetime(new Date());
deviceService.updateDevice(device);
}
return "basic/Equipment";
}
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sql语句显示多表连接
SELECT
consumptivematerialName ,m.id
,(SELECT SUM(quantity) FROM t_device_material WHERE t_device_material.materialId=m.id) quantity,
IFNULL((
SELECT SUM(sumNum) FROM t_detail WHERE t_detail.consumptivematerialId =b.materialId AND t_detail.date >b.updateTime) ,0)usedQuantity
FROM t_con_material m
INNER JOIN t_device_type t ON m.devicetypeId=t.id
INNER JOIN t_device d ON t.id=d.devicetypeId
LEFT JOIN t_detail a ON a.consumptivematerialId=m.id
LEFT JOIN t_device_material b ON b.materialId=a.consumptivematerialId AND a.date>b.updateTime
WHERE d.id=#{id,jdbcType=INTEGER} AND m.status=1
GROUP BY id
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Service部分除了调用Mapper增删改查方法外，还可以处理业务逻辑
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更改后的sql语句 子查询
<select id="selectByid" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
SELECT a.id materialid,
a.consumptivematerialName ,
IFNULL((SELECT quantity FROM t_device_material WHERE deviceid=#{id,jdbcType=INTEGER} AND t_device_material.materialId = a.id),0) quantity
,
IFNULL(( SELECT SUM(sumNum) FROM t_detail WHERE t_detail.consumptivematerialId =a.id AND t_detail.date >
(SELECT t_device_material.updateTime FROM t_device_material WHERE deviceid=#{id,jdbcType=INTEGER} AND t_device_material.materialId = a.id)
) ,0)usedQuantity
FROM t_con_material a LEFT JOIN t_device_type b ON a.devicetypeId = b.id AND a.status =1
WHERE b.id = (SELECT t_device.devicetypeId FROM t_device WHERE t_device.id= #{id,jdbcType=INTEGER} )
</select>