code: public static Map<String, String> buildSignAfterParasMap(Map<String, String> params, String paternerKey) {
  		params.put("nonce_str", String.valueOf(System.currentTimeMillis()));
  		String sign = PaymentKit.createSign(params, paternerKey);
  		params.put("sign", sign);
  		return params;
  	}
docs: 构建签名之后的参数
  
  @param params
  @param paternerKey
  @return <Map<String, String>>