java后台通过输出流将数据输出到页面

String result = HttpReq.doPost("http://localhost:8080/springbootbeijia/sys/author",params);                  
 //将返回的提示信息输出到页面
HttpServletResponse response = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getResponse();       response.setContentType("application/json;charset=utf-8");                    
ServletOutputStream out;
try {
        out = response.getOutputStream();
        byte data[] = result.getBytes();
        out.write(data);
        out.close();
  } catch (IOException e) {
                    e.printStackTrace();
    }