form表单提交，后台实体类接收转义问题

问题：前台表单用ajax提交，data为validateForm.serializeArray()，后台用实体类接收参数，&符号被转义为&但是从request中直接取值是没问题的，请问如何解决实体类接收到的参数的转义问题。

代码如下：

前台代码：

var formData = validateForm.serializeArray();

$.ajax({
    type: 'POST',
    cache: false,
    url: basepath + "/newProjectAdjustment/saveProjectAdjustmentInfo.do",
    data: formData,
    dataType: "json",
    async:false,
    success: function (result) {
        if (result.success) {
            saveFlag = true;
        } else {
            parent.$.messager.alert("提示", result.msg != "操作成功" ? result.msg : projMessage.get("C008"), "info");
        }
    },
    error: function (result) {
        parent.$.messager.alert("提示", projMessage.get("C008"), "info");
    }
});
return saveFlag;      

后端代码：
@RequestMapping(value = "saveProjectAdjustmentInfo.do", method = RequestMethod.POST)
@ResponseBody
public AjaxJson saveProjectAdjustmentInfo(HttpServletRequest request, ProjectAdjustmentDTO projectAdjustmentInfo) throws InvocationTargetException, IllegalAccessException {
    Map params = FormFormatterUtil.formatFrom2Map(request);
 
    AjaxJson result = new AjaxJson();
   
    return result;
}

Debug：
这是实体类中接收的参数：      

这是request种接收的参数：