JAVA 跨域请求 不用JSONP 不用CORS

@RequestMapping(value = "/crossDomain")
    @ResponseBody
    public Object crossDomain(ServletRequest request, ServletResponse response) {
        logger.info(ZhongYiYaoAreaController.class + "跨域请求data开始");
        PageData pd = this.getPageData();
        String entityStr = "";
        PageData result = null;
        try {
//            创建httpClient 对象
            HttpClient httpClient = new DefaultHttpClient();
//            根据url 创建请求对象
            HttpPost httpPost = new HttpPost(pd.getString("url"));
//            创建参数对象 传入请求对象中
            List<NameValuePair> params = new ArrayList<NameValuePair>();
            for (Object key : pd.keySet()) {
                params.add(new BasicNameValuePair(key.toString(), pd.get(key).toString()));
            }
            UrlEncodedFormEntity entity = new UrlEncodedFormEntity(params, "utf-8");
            httpPost.setEntity(entity);
//            发出请求得到响应
            HttpResponse httpResponse = httpClient.execute(httpPost);
//            接收到响应中的数据体 转化成json字符串
            entityStr = EntityUtils.toString(httpResponse.getEntity());
            result = new PageData();
            Map jsonMap = null;
            ArrayList jsonList = null;
            if (StringUtils.isBlank(entityStr)) {
                logger.error(ZhongYiYaoAreaController.class + "跨域请求异常jsonStr为空");
                throw new Exception("jsonStr为空");
            }
//            根据objectMapper 通过反射 将jsonStr转换成Map
            ObjectMapper objectMapper = new ObjectMapper();
            if(pd.getString("url").indexOf("queryHisHerbsInfo") !=-1){
                jsonList = objectMapper.readValue(entityStr, ArrayList.class);
                if(jsonList.size()>0){
                    result.put("data", jsonList.get(0));
                    result.put("error", null);
                    result.put("success", true);
                }else{
                    result.put("data", new ArrayList());
                    result.put("error", "跨域请求发生异常");
                    result.put("success", false);
                }
            }else{
                jsonMap = objectMapper.readValue(entityStr, Map.class);
                if(jsonMap.get("error")==null || jsonMap.get("error")=="null"){
                    result.put("data", jsonMap.get("data"));
                    result.put("error", jsonMap.get("error"));
                    result.put("success", jsonMap.get("success"));
                }else{
                    result.put("data",  new ArrayList());
                    result.put("error", jsonMap.get("error"));
                    result.put("success", false);
                }
            }

        } catch (Exception e) {
            result.put("data", new ArrayList());
            result.put("error", "跨域请求发生异常");
            result.put("success", false);
            logger.error(ZhongYiYaoAreaController.class + "跨域请求异常");
            logger.error(e.getMessage());
            return AppUtil.returnObject(new PageData(), result);
        } finally {
            logger.info(ZhongYiYaoAreaController.class + "跨域请求结束");
        }
        return AppUtil.returnObject(new PageData(), result);
    }