后台获取放在Request Payload中的值

  今天在解析前台EXTJS传过来的表格的值得时候，发现EXT将数据封装到请求的Request Payload中了，如图所示：

后台要想从Request Payload中得到自己想要的数据,就要从流中来获取数据，具体的代码为

private String getStringFromStream(HttpServletRequest req) {ServletInputStream is;try {is = req.getInputStream();int nRead = 1;int nTotalRead = 0;byte[] bytes = new byte[10240];while (nRead > 0) {nRead = is.read(bytes, nTotalRead, bytes.length - nTotalRead);if (nRead > 0)nTotalRead = nTotalRead + nRead;}String str = new String(bytes, 0, nTotalRead, "utf-8");return str;} catch (IOException e) {e.printStackTrace();return "";}}

这就可以解析出来Request payload中的数据了。