从http请求的Body中获取参数

private String initJSONBody(HttpServletRequest request) {
		StringBuilder sb = null;
		try {
			BufferedReader br = new BufferedReader(new InputStreamReader(request.getInputStream(), "UTF-8"));
			//			returnStr = br.readLine().toString();
			String line = null;
			sb = new StringBuilder();
			while ((line = br.readLine()) != null) {
				sb.append(line);
				sb.append("\r\n");
			}
			br.close();
			logger.error("error-body:" + sb.toString());
		} catch (Exception e) {
			e.printStackTrace();
		}
		return sb.toString();
	}