servlet处理json

1.接收json数据

 BufferedReader br =                new BufferedReader(new InputStreamReader                    ((ServletInputStream)req.getInputStream(), "utf-8"));            String temp;            while ((temp = br.readLine()) != null) {                sb.append(temp);            }            br.close();

获取相关属性：input.getString("属性名"):

2.返回json数据

resp.setContentType("application/x-javascript; charset=utf-8");            PrintWriter pw = resp.getWriter();            String str = output.toString();                        pw.write(str);            pw.flush();            pw.close();