尝试一（从AJAX请求上解决）：

可以显式设置contentType的编码为utf-8, 后台一般都能正常解码例如：contentType: "application/x-www-form-urlencoded; charset=utf-8"

代码示例：

jQuery(form).ajaxSubmit({                url: "doDepositApply.do",                type: "post",                dataType: "json",                contentType: "application/x-www-form-urlencoded; charset=utf-8",                success: function(response) {                    if(response.success){                        alert("充值申请已提交");                        parent.jQuery.colorbox.close();                    }else{                        alert("充值申请提交失败："+response.message);                    }                }            });