8-5 商品添加之前端及controller实现
作者：互联网
目录
4、ProductManagementController addProduct()实现
1、productoperation.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>商品编辑</title>
<meta name="viewport" content="initial-scale=1, maximum-scale=1">
<link rel="shortcut icon" href="/favicon.ico">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="stylesheet"
href="//g.alicdn.com/msui/sm/0.6.2/css/sm.min.css">
<link rel="stylesheet"
href="//g.alicdn.com/msui/sm/0.6.2/css/sm-extend.min.css">
<link rel="stylesheet"
href="../resources/css/shop/productmanagement.css">
</head>
<body>
<header class="bar bar-nav">
<h1 class="title">商品编辑</h1>
</header>
<div class="content">
<div class="list-block">
<ul>
<li>
<div class="item-content">
<div class="item-media">
<i class="icon icon-form-name"></i>
</div>
<div class="item-inner">
<div class="item-title label">商品名称</div>
<div class="item-input">
<input type="text" id="product-name" placeholder="商品名称">
</div>
</div>
</div>
</li>
<li>
<div class="item-content">
<div class="item-media">
<i class="icon icon-form-email"></i>
</div>
<div class="item-inner">
<div class="item-title label">目录</div>
<div class="item-input">
<select id="category">
</select>
</div>
</div>
</div>
</li>
<li>
<div class="item-content">
<div class="item-media">
<i class="icon icon-form-email"></i>
</div>
<div class="item-inner">
<div class="item-title label">优先级</div>
<div class="item-input">
<input type="number" id="priority" placeholder="数字越大越排前面">
</div>
</div>
</div>
</li>
<!-- <li>
<div class="item-content">
<div class="item-media">
<i class="icon icon-form-email"></i>
</div>
<div class="item-inner">
<div class="item-title label">积分</div>
<div class="item-input">
<input type="number" id="point" placeholder="商品积分">
</div>
</div>
</div>
</li> -->
<li>
<div class="item-content">
<div class="item-media">
<i class="icon icon-form-email"></i>
</div>
<div class="item-inner">
<div class="item-title label">原价</div>
<div class="item-input">
<input type="number" id="normal-price" placeholder="可选">
</div>
</div>
</div>
</li>
<li>
<div class="item-content">
<div class="item-media">
<i class="icon icon-form-email"></i>
</div>
<div class="item-inner">
<div class="item-title label">现价</div>
<div class="item-input">
<input type="number" id="promotion-price" placeholder="可选">
</div>
</div>
</div>
</li>
<!-- <li>
<div class="item-content">
<div class="item-media">
<i class="icon icon-form-email"></i>
</div>
<div class="item-inner">
<div class="item-title label">积分</div>
<div class="item-input">
<input type="number" id="point" placeholder="可选">
</div>
</div>
</div>
</li> -->
<li>
<div class="item-content">
<div class="item-media">
<i class="icon icon-form-email"></i>
</div>
<div class="item-inner">
<div class="item-title label">缩略图</div>
<div class="item-input">
<input type="file" id="small-img">
</div>
</div>
</div>
</li>
<li>
<div class="item-content">
<div class="item-media">
<i class="icon icon-form-email"></i>
</div>
<div class="item-inner detail-img-div">
<div class="item-title label">详情图片</div>
<div class="item-input" id="detail-img">
<input type="file" class="detail-img">
<!-- <input type="file" class="detail-img">
<input type="file" class="detail-img"> -->
</div>
</div>
</div>
</li>
<li>
<div class="item-content">
<div class="item-media">
<i class="icon icon-form-email"></i>
</div>
<div class="item-inner">
<div class="item-title label">商品描述</div>
<div class="item-input">
<textarea id="product-desc" placeholder="商品描述"></textarea>
</div>
</div>
</div>
</li>
<li>
<div class="item-content">
<div class="item-media">
<i class="icon icon-form-email"></i>
</div>
<div class="item-inner">
<label for="j_captcha" class="item-title label">验证码</label> <input
id="j_captcha" name="j_captcha" type="text"
class="form-control in" placeholder="验证码" />
<div class="item-input">
<img id="captcha_img" alt="点击更换" title="点击更换"
onclick="changeVerifyCode(this)" src="../Kaptcha" />
</div>
</div>
</div>
</li>
</ul>
</div>
<div class="content-block">
<div class="row">
<div class="col-50">
<a href="/o2oDemo/shopadmin/productmanagement"
class="button button-big button-fill button-danger" id="back">返回商品管理</a>
</div>
<div class="col-50">
<a href="#" class="button button-big button-fill" id="submit">提交</a>
</div>
</div>
</div>
</div>
<script type='text/javascript'
src='//g.alicdn.com/sj/lib/zepto/zepto.min.js' charset='utf-8'></script>
<script type='text/javascript'
src='//g.alicdn.com/msui/sm/0.6.2/js/sm.min.js' charset='utf-8'></script>
<script type='text/javascript'
src='//g.alicdn.com/msui/sm/0.6.2/js/sm-extend.min.js' charset='utf-8'></script>
<script type='text/javascript' src='../resources/js/common/common.js'
charset='utf-8'></script>
<script type='text/javascript'
src='../resources/js/shop/productoperation.js' charset='utf-8'></script>
</body>
</html>
2、productoperation.js
$(function() {
// 从URL里获取productId参数的值
var productId = getQueryString('productId');
// 通过productId获取商品信息的URL
var infoUrl = '/o2oDemo/shopadmin/getproductbyid?productId=' + productId;
// 获取当前店铺设定的商品类别列表的URL
var categoryUrl = '/o2oDemo/shopadmin/getproductcategorylist';
// 更新商品信息的URL
var productPostUrl = '/o2oDemo/shopadmin/modifyproduct';
// 由于商品添加和编辑使用的是同一个页面，
// 该标识符用来标明本次是添加还是编辑操作
var isEdit = false;
if (productId) {
// 若有productId则为编辑操作
getInfo(productId);
isEdit = true;
} else {
getCategory();
productPostUrl = '/o2oDemo/shopadmin/addproduct';
}
// 获取需要编辑的商品的商品信息，并赋值给表单
function getInfo(id) {
$
.getJSON(
infoUrl,
function(data) {
if (data.success) {
// 从返回的JSON当中获取product对象的信息，并赋值给表单
var product = data.product;
$('#product-name').val(product.productName);
$('#product-desc').val(product.productDesc);
$('#priority').val(product.priority);
// $('#point').val(product.point);
$('#normal-price').val(product.normalPrice);
$('#promotion-price').val(
product.promotionPrice);
// 获取原本的商品类别以及该店铺的所有商品类别列表
var optionHtml = '';
var optionArr = data.productCategoryList;
var optionSelected = product.productCategory.productCategoryId;
// 生成前端的HTML商品类别列表，并默认选择编辑前的商品类别
optionArr
.map(function(item, index) {
var isSelect = optionSelected === item.productCategoryId ? 'selected'
: '';
optionHtml += '<option data-value="'
+ item.productCategoryId
+ '"'
+ isSelect
+ '>'
+ item.productCategoryName
+ '</option>';
});
$('#category').html(optionHtml);
}
});
}
// 为商品添加操作提供该店铺下的所有商品类别列表
function getCategory() {
$.getJSON(categoryUrl, function(data) {
if (data.success) {
var productCategoryList = data.data;
var optionHtml = '';
productCategoryList.map(function(item, index) {
optionHtml += '<option data-value="'
+ item.productCategoryId + '">'
+ item.productCategoryName + '</option>';
});
$('#category').html(optionHtml);
}
});
}
// 针对商品详情图控件组，若该控件组的最后一个元素发生变化（即上传了图片），
// 且控件总数未达到6个，则生成新的一个文件上传控件
$('.detail-img-div').on('change', '.detail-img:last-child', function() {
if ($('.detail-img').length < 6) {
$('#detail-img').append('<input type="file" class="detail-img">');
}
});
// 提交按钮的事件响应，分别对商品添加和编辑操作做不同响应
$('#submit').click(
function() {
// 创建商品json对象，并从表单里面获取对应的属性值
var product = {};
product.productName = $('#product-name').val();
product.productDesc = $('#product-desc').val();
product.priority = $('#priority').val();
// product.point = $('#point').val();
product.normalPrice = $('#normal-price').val();
product.promotionPrice = $('#promotion-price').val();
// 获取选定的商品类别值
product.productCategory = {
productCategoryId : $('#category').find('option').not(
function() {
return !this.selected;
}).data('value')
};
product.productId = productId;
// 获取缩略图文件流
var thumbnail = $('#small-img')[0].files[0];
// 生成表单对象，用于接收参数并传递给后台
var formData = new FormData();
formData.append('thumbnail', thumbnail);
// 遍历商品详情图控件，获取里面的文件流
$('.detail-img').map(
function(index, item) {
// 判断该控件是否已选择了文件
if ($('.detail-img')[index].files.length > 0) {
// 将第i个文件流赋值给key为productImgi的表单键值对里
formData.append('productImg' + index,
$('.detail-img')[index].files[0]);
}
});
// 将product json对象转成字符流保存至表单对象key为productStr的的键值对里
formData.append('productStr', JSON.stringify(product));
// 获取表单里输入的验证码
var verifyCodeActual = $('#j_captcha').val();
if (!verifyCodeActual) {
$.toast('请输入验证码！');
return;
}
formData.append("verifyCodeActual", verifyCodeActual);
// 将数据提交至后台处理相关操作
$.ajax({
url : productPostUrl,
type : 'POST',
data : formData,
contentType : false,
processData : false,
cache : false,
success : function(data) {
if (data.success) {
$.toast('提交成功！');
$('#captcha_img').click();
} else {
$.toast('提交失败！');
$('#captcha_img').click();
}
}
});
});
});
3、添加路由
@Controller
@RequestMapping(value="shopadmin",method= {RequestMethod.GET})
public class ShopAdminController {
@RequestMapping(value="/productoperation")
public String productOperation() {
//转发至商品添加/编辑页面
return "shop/productoperation";
}
}
4、ProductManagementController addProduct()实现
@Controller
@RequestMapping("/shopadmin")
public class ProductManagementController {
@Autowired
private ProductService productService;
//支持上传商品详情图的最大数量
private static final int IMAGEMAXCOUNT = 6;
@RequestMapping(value="/addproduct",method=RequestMethod.POST)//接收表单数据，因此用POST
@ResponseBody
private Map<String,Object> addProduct(HttpServletRequest request){
Map<String,Object> modelMap = new HashMap<String,Object>();
//验证码校验
if(!CodeUtil.checkVerifyCode(request)) {
modelMap.put("success", false);
modelMap.put("errMsg", "输入了错误的验证码");
return modelMap;
}
//接收前端参数的变量的初始化，包括商品、缩略图、详情图列表实体类
ObjectMapper mapper = new ObjectMapper();
Product product = null;
String productStr = HttpServletRequestUtil.getString(request, "productStr");//从前端的json转换为string
MultipartHttpServletRequest multipartRequest = null;//处理文件流
ImageHolder thumbnail = null;//处理缩略图,保存缩略图文件流和名字
List<ImageHolder> productImgList = new ArrayList<ImageHolder>();
CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(
request.getSession().getServletContext());//从session获取文件流
try {
//若请求中存在文件流，则取出相关的文件（包括缩略图和详情图）
if(multipartResolver.isMultipart(request)) {
multipartRequest = (MultipartHttpServletRequest) request;
//取出缩略图并构建ImageHolder对象
CommonsMultipartFile thumbnailFile = (CommonsMultipartFile) multipartRequest.getFile("thumbnail");
thumbnail = new ImageHolder(thumbnailFile.getOriginalFilename(), thumbnailFile.getInputStream());
//取出详情图列表并构建List<ImageHolder>列表对象，最多支持上传六张图片
for(int i = 0; i < IMAGEMAXCOUNT; i++) {
CommonsMultipartFile productImgFile = (CommonsMultipartFile) multipartRequest.getFile("productImg"+i);
if(productImgFile != null) {
//若取出的第i张详情图片文件流不为空，则将其加入详情图列表
ImageHolder productImg = new ImageHolder(productImgFile.getOriginalFilename(),
productImgFile.getInputStream());
//System.out.println("controller name:" + productImg.getImageName());
productImgList.add(productImg);
}else {
//若取出的第i张详情图片文件流为空,则终止循环
break;
}
}
}else {
modelMap.put("success", true);
modelMap.put("errMsg", "上传图片不能为空");
return modelMap;
}
}catch (Exception e) {
modelMap.put("success", false);
modelMap.put("errMsg", e.toString());
return modelMap;
}
try {
//尝试获取前端传过来的表单string流并将其转换成Product实体类
product = mapper.readValue(productStr, Product.class);
}catch (Exception e) {
modelMap.put("success", false);
modelMap.put("errMsg", e.toString());
return modelMap;
}
//若product信息，缩略图及详情图列表非空，则开始进行商品添加操作
if(product != null && thumbnail != null && productImgList.size() > 0) {
try {
//从session中获取当前店铺的Id并赋值给product，减少对前端数据的依赖
Shop currentShop = (Shop)request.getSession().getAttribute("currentShop");
product.setShop(currentShop);
//执行添加操作
ProductExecution pe = productService.addProduct(product, thumbnail, productImgList);
if(pe.getState() == ProductStateEnum.SUCCESS.getState()) {
modelMap.put("success", true);
}else {
modelMap.put("success", false);
modelMap.put("errMsg", pe.getStateInfo());
}
}catch (ProductOperationException e) {
modelMap.put("success", false);
modelMap.put("errMsg", e.toString());
return modelMap;
}
} else {
modelMap.put("success", false);
modelMap.put("errMsg", "请输入商品信息");
}
return modelMap;
}
}
报错
点击提交后，后台提示String index out of range。经过调试发现传输的文件名没有后缀，在取扩展名时报错。
解决：
Controller中
错误写法 productImgFile.getName() ：获取文件名，不包含后缀
productImgFile.getOriginalFilename() ：获取全文件名
标签：product,端及,val,modelMap,success,put,controller,添加,var 来源： https://blog.csdn.net/weixin_40703303/article/details/89854412