ios请求json格式数据到Springmvc后台报415但是安卓却没问题

ios请求json格式数据到Springmvc后台报415但是安卓却没问题，难道springmvc会区分安卓和ios？我后台接受json数据代码如下

 @ResponseBody
    @RequestMapping(value = "/Api/AdminToUser/SetCompanyLogo", method = RequestMethod.POST)
    public void setCompanyLogo(@RequestBody AdminToUserMessage adminToUserMessage,
            HttpServletRequest request) throws IOException{
        Base_Company baseCompany = new Base_Company();
        List<Base_Company> list = crm_LinkmanService.findAll(baseCompany);
        System.out.println(list.size());

        for(Base_Company bc : list){
            HttpURLConnection connection = connection(SET_NICKNAME,
                    adminToUserMessage);
            DataOutputStream out = new DataOutputStream(
                    connection.getOutputStream());
            String identifier = bc.getCompanyId();
            String logo = bc.getLogo();


            String orgJson = "{"

                +"\"From_Account\"" + ":"+"\""+identifier+"\""+","+"\"ProfileItem\""+":"
                    +"["+
                        "{"+
                            "\"Tag\""+":"+"\"Tag_Profile_IM_Image\""+","+
                            "\"Value\""+":"+"\""+logo+"\""+
                        "}"+
                    "]"
                +"}";

            out.write(orgJson.getBytes("UTF-8"));
            out.flush();
            out.close();
            TengXunActionStatus ts = getTengXunActionStatus(connection);
        }
    }

http://www.2cto.com/kf/201209/154447.html

更大可能是你的iOS构造的psot数据格式不正确等。多检查一下发送的数据是否跟android发送的一致