JSONP
发布时间:2020-12-16 19:57:02 所属栏目:百科 来源:网络整理
导读:JSONP主要代码: StringBuilder result = new StringBuilder(json.toString());String callback = request.getParameter("callback");if(callback!=null callback.trim() != ""){result.insert(0,'(');result.insert(0,callback);result.append(")");}printJs
JSONP主要代码:
StringBuilder result = new StringBuilder(json.toString()); String callback = request.getParameter("callback"); if(callback!=null && callback.trim() != ""){ result.insert(0,'('); result.insert(0,callback); result.append(")"); } printJson(request,response,result.toString()); 其中json是后台处理后的json对象,包含了要返回至前台的各种数据。 printJson(request,result.toString());用于向前台打印json对象数据。 public void printJson(HttpServletRequest request,HttpServletResponse response,String result) { try { response.setContentType("text/html;charset=utf-8"); response.setHeader("Pragma","No-cache"); response.setHeader("Cache-Control","no-cache"); response.setDateHeader("Expires",0); String var = request.getParameter("var"); if (StringUtils.isNotBlank(var)) { result = new StringBuilder("var ").append(var).append("=").append(result).append(";").toString(); } byte[] data = result.getBytes("utf-8"); response.setContentLength(data.length); response.getOutputStream().write(data,data.length); } catch (IOException e) { log.error("print result error!",e); } } 后台构建数据过程: JSONObject root = new JSONObject(); JSONArray arr = new JSONArray(); for(){ JSONObject o = new JSONObject(); o.append("title",video.getTtitle()); arr.put(o) } root.append("status",1); root.append("msg",""); root.append("data",arr); 要返回的json数据 {"status":1,"statusText":"数据信息","data":[{title:"sdfsfd",vid:2342,pid:234324,url:"",cid,"",actor:"",img:""},{}.............]} (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |