Java enables images and text to be submitted to the form at the same time

<form action="/addPro" method="post" enctype="multipart/form-data">
    <a>宠物（或产品）类型：</a><select id="categoryID" name="cid"></select><br/><br/>
    <a>宠物（或产品）名字：</a><input type="text" name="cname"><br/><br/>
    <a>一句话介绍：</a><input type="text" name="introduction"><br/><br/>
    <a>题目：</a><input type="text" name="title"><br/><br/>
    <a>价钱：</a><input type="text" name="price"><br/><br/>
    <a>库存：</a><input type="text" name="stock"><br/><br/>
    <a>状态：</a><select name="status">
        <option value="1">在售</option>
        <option value="2">下架</option>
        <option value="3">删除</option>
    </select><br/><br/>
    <a>头像设置:</a><input type="file" οnchange="previewFile()" name="fileName">
    <br/>
    <img src="${data.image}" alt="Image preview"/><br/>
    <a>详细描述(编辑完需要在文本框右上角点保存)：</a><br/>
    <div id="editor">
        <p>商品详细描述</p>
        <p>编辑完需要在文本框右上角点保存</p>
    </div><input type="hidden" name="details" id="detail"><br/><br/>
    <input type="submit" value="新增商品">
</form>

 <!-- https://mvnrepository.com/artifact/commons-io/commons-io有关图片文本同时上传 -->
    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.4</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.3</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/commons-collections/commons-collections -->
    <dependency>
      <groupId>commons-collections</groupId>
      <artifactId>commons-collections</artifactId>
      <version>3.1</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/commons-beanutils/commons-beanutils -->
    <dependency>
      <groupId>commons-beanutils</groupId>
      <artifactId>commons-beanutils</artifactId>
      <version>1.9.2</version>
    </dependency>

//新增产品
	@RequestMapping("/addPro")
	public void addPro(HttpServletRequest request, HttpServletResponse response) throws IOException {
		//编码规范
		response.setContentType("text/html");
//		response.setCharacterEncoding("utf-8");
		Product product = new Product();
 
		//这种方法主要通过if (item.isFormField())这个条件判别文件还是非文件
		DiskFileItemFactory factory = new DiskFileItemFactory();
		ServletFileUpload upload = new ServletFileUpload(factory);
		List items = null;
		try {
			items = upload.parseRequest(request);
		} catch (FileUploadException e) {
			e.printStackTrace();
		} // 解析request请求
		Iterator iter = items.iterator();// 遍历表单中提交过来的内容
		while (iter.hasNext()) {
			FileItem item = (FileItem) iter.next();
			if (item.isFormField()) { // 如果是表单域 ，就是非文件上传元素
				String value = item.getString("UTF-8"); // 获取value属性的值，这里需要指明UTF-8格式，否则出现中文乱码问题
				if (item.getFieldName().equals("cid")) {// 对应form中属性的名字
					int categoryId = Integer.parseInt(value);
					product.setCategory_id(categoryId);
				} else if (item.getFieldName().equals("cname")) {
					product.setName(value);
				}else if (item.getFieldName().equals("introduction")) {
					product.setIntroduction(value);
				}else if (item.getFieldName().equals("title")) {
					product.setTitle(value);
				}else if (item.getFieldName().equals("price")) {
					BigDecimal price=new BigDecimal(value);
					product.setPrice(price);
				}else if (item.getFieldName().equals("stock")) {
					product.setStock(Integer.parseInt(value));
				}else if (item.getFieldName().equals("status")) {
					product.setStatus(Integer.parseInt(value));
				}else if (item.getFieldName().equals("details")) {
					product.setDetail(value);
				}
			}else {
				String filename = item.getName(); // 文件的名字
 
				String imgname = filename.substring(0, filename.indexOf("."));  //减去“.”后面的字符
 
				//tomcat启动位置
//				String t1 = System.getProperty("user.dir").substring(0,
//						System.getProperty("user.dir").length() - 4);
 
				String path = request.getServletContext().getRealPath("img"); //target找到img位置
				Long time = Calendar.getInstance().getTimeInMillis();  //时间戳，保证文件命名不重复
				String imgurl = "./img/"+imgname+time+".jpg";
				product.setImage(imgurl);
				System.out.println(imgurl);
				File saveFile = new File(path+"/" + imgname+time+".jpg"); // 定义一个file指向一个具体的文件
				try {
					item.write(saveFile);// 把上传的内容写到一个文件中
					System.out.println("上传到"+path+"成功");
				} catch (Exception e) {
					/* e.printStackTrace(); */
					System.out.println("文件"+path+"为空");
				}
			}
		}
 
		if(productDaoService.addProduct(product)){
			PrintWriter out = response.getWriter();
			out.print("<script language=\"javascript\">alert(&#39;ADD SUCCESS&#39;);window.location.href=&#39;/admin/administrator&#39;</script>");
		}else {
			PrintWriter out = response.getWriter();
			out.print("<script language=\"javascript\">alert(&#39;增加失败&#39;);window.location.href=&#39;/admin/addProduct&#39;</script>");
		}
	}