servlet获取httpPost请求中的JSON数据

 public String acceptJSON(HttpServletRequest request){

String acceptjson = "";

try {

BufferedReader br = new BufferedReader(new InputStreamReader( (ServletInputStream) request.getInputStream(), "utf-8"));  

            StringBuffer sb = new StringBuffer("");  

            String temp;  

            while ((temp = br.readLine()) != null) {  

                sb.append(temp);  

            }  

            br.close();  

            acceptjson = sb.toString();  

            System.out.print(acceptjson);

        } catch (Exception e) {  

            e.printStackTrace();    

        }

return acceptjson;

}