老师您好，验证码输入正确但是提示错误，打印verifyCodeActual发现为null，期望值可以接收到。您给别的同学回答提到的方法都试过了…

shopoperation.js

/**
 * 
 */
$(function(){
	var initUrl = '/bsp/shopadmin/getshopinitinfo';
	var registerShopUrl = '/bsp/shopadmin/registershop';
	alert(initUrl);
	getShopInitInfo();
	function getShopInitInfo(){
		$.getJSON(initUrl,function(data){
			if(data.success){
				var tempHtml = '';
				var tempAreaHtml = '';
				data.shopCategoryList.map(function(item,index){
					tempHtml += '<option data-id="' + item.shopCategoryId + '">'
					+ item.shopCategoryName+'</option>';
				});
				data.areaList.map(function(item,index){
					tempAreaHtml += '<option data-id="' + item.areaId + '">'
					+item.areaName +'</option>';
				});
				$('#shop-category').html(tempHtml);
				$('#area').html(tempAreaHtml);
			}
		});
		$('#submit').click(function(){
			var shop = {};
			shop.shopName = $('#shop-name').val();
			shop.shopAddr = $('#shop-addr').val();
			shop.phone = $('#shop-phone').val();
			shop.shopDesc = $('#shop-desc').val();
			shop.shopCategory = {
					shopCategoryId : $('#shop-category').find('option').not(function(){
						return !this.selected;					
					}).data('id')
			};
			shop.area = {
					areaId : $('#area').find('option').not(function(){
						return !this.selected;					
					}).data('id')
			};
			var shopImg = $('#shop-img')[0].files[0];
			var formData = new FormData();
			formData.append('shopImg',shopImg);
			formData.append('shopStr',JSON.stringify(shop));
			var verifyCodeActual = $('#j_captcha').val();
	        if (!verifyCodeActual) {
	            $.toast('请输入验证码！');
	            return;
	        }
			formData.append('verifyCodeActual',verifyCodeActual);
			$.ajax({
				url : registerShopUrl,
				type : 'POST',
				data : formData,
				contentType : false,
				processData : false,
				cache : false,
				success : function(data){
					if(data.success){
						$.toast('提交成功！');
					}else{
						$.toast('提交失败！' + data.errMsg);
					}
					$('#captcha_img').click();
				}
			});
		});
	}
})

ShopManagementController.java 导包没问题

@RequestMapping(value = "/registershop", method = RequestMethod.POST)
    @ResponseBody
    private Map<String, Object> registerShop(HttpServletRequest request) {
        Map<String, Object> modelMap = new HashMap<String, Object>();
        if (!CodeUtil.checkVerifyCode(request)) {
            modelMap.put("success", false);
            modelMap.put("errMsg", "输入了错误的验证码");
            return modelMap;
        }
		// 1.接收并转化相应的参数，包括店铺信息以及图片信息
		String shopStr = HttpServletRequestUtil.getString(request, "shopStr");
		ObjectMapper mapper = new ObjectMapper();
		Shop shop = null;
		try {
			shop = mapper.readValue(shopStr, Shop.class);
		} catch (Exception e) {
			modelMap.put("success", false);
			modelMap.put("errMsg", e.getMessage());
			return modelMap;
		}

spring-web.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
    <!-- 配置SpringMVC -->
    <!-- 1.开启SpringMVC注解模式 -->
    <mvc:annotation-driven />
 
    <!-- 2.静态资源默认servlet配置 (1)加入对静态资源的处理：js,gif,png (2)允许使用"/"做整体映射 -->
    <mvc:resources mapping="/resources/**" location="/resources/" />
    <mvc:default-servlet-handler />
 
    <!-- 3.定义视图解析器 -->
    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/html/"></property>
        <property name="suffix" value=".html"></property>
    </bean>
    <!-- 文件上传解析器 -->
    <bean id="multipartResolver"
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="defaultEncoding" value="utf-8"></property>
        <!-- 1024 * 1024 * 20 = 20M -->
        <property name="maxUploadSize" value="20971520"></property>
        <property name="maxInMemorySize" value="20971520"></property>
    </bean>
 
    <!-- 4.扫描web相关的bean -->
    <context:component-scan base-package="com.sdyu.bsp.web" />
</beans>