1. 输出SearchFacesResponse对象的JSON格式字符串
2. 设置响应内容类型为"application/json;charset=utf-8"
3. 获取响应的字符输出流
4. 将SearchFacesResponse对象转化为JSON字符串并输出。

代码片段

System.out.println(SearchFacesResponse.toJsonString(resp));
response.setContentType("application/json;charset=utf-8");
PrintWriter writer = response.getWriter();
writer.write(SearchFacesResponse.toJsonString(resp));