/**  *   * 微信退款  * @param transaction_id 微信支付訂單號  * @param out_refund_no 商戶訂單號  * @param total_fee 總金額  * @param refund_fee 退款金額  * @param op_user_id 操作人  * @return String  * @exception  */ public String wxPayRefundRequest(String transaction_id, String out_refund_no,   int total_fee, int refund_fee, String op_user_id) {  CloseableHttpClient httpclient = null;  CloseableHttpResponse response = null;  String strResponse = null;  try {   httpclient = ClientCustomSSL.getCloseableHttpClient();   // 構造HTTP請求   HttpPost httpPost = new HttpPost(Configure.PAY_REFUND_API);   // PayRefundReqData wxdata = new PayRefundReqData(   // "1004720096201602263541023415", "16371", 30, 30, "19417");   PayRefundReqData wxdata = new PayRefundReqData(transaction_id,     out_refund_no, total_fee, refund_fee, op_user_id);   String requestStr = Util.ConvertObj2Xml(wxdata);   StringEntity se = new StringEntity(requestStr.toString());   httpPost.setEntity(se);   // 發送請求   response = httpclient.execute(httpPost);    HttpEntity entity = response.getEntity();   if (entity != null) {    SAXReader saxReader = new SAXReader();    Document document = saxReader.read(entity.getContent());    Element rootElt = document.getRootElement();    // 結果碼    String returnCode = rootElt.elementText("return_code");    String resultCode = rootElt.elementText("result_code");    if ("SUCCESS".equals(returnCode)&&"SUCCESS".equals(resultCode)) {     strResponse=returnCode;    }else {     strResponse=rootElt.elementText("err_code_des");    }   }    EntityUtils.consume(entity);   } catch (Exception e) {   Logger.getLogger(getClass()).error("payRefundRequest", e);  } finally {   try {    response.close();    httpclient.close();   } catch (IOException e) {    // TODO Auto-generated catch block    Logger.getLogger(getClass()).error("payRefundRequest關閉異常:", e);   }  }  return strResponse; }

/**  *   * 支付寶退款請求  * @param out_trade_no 訂單支付時傳入的商戶訂單號,不能和 trade_no同時為空。  * @param trade_no 支付寶交易號，和商戶訂單號不能同時為空  * @param refund_amount 需要退款的金額，該金額不能大于訂單金額,單位為元，支持兩位小數  * @return   * String  * @exception   */ public String alipayRefundRequest(String out_trade_no,String trade_no,double refund_amount){   // 發送請求  String strResponse = null;  try {   AlipayClient alipayClient = new DefaultAlipayClient     (AlipayConfig.alipayurl,AlipayConfig.appid,       AlipayConfig.private_key,AlipayConfig.content_type,AlipayConfig.input_charset,AlipayConfig.ali_public_key);   AlipayTradeRefundRequest request = new AlipayTradeRefundRequest();   AlipayRefundInfo alidata= new AlipayRefundInfo();   alidata.setOut_trade_no(out_trade_no);   alidata.setRefund_amount(refund_amount);   alidata.setTrade_no(trade_no);   request.setBizContent(JsonUtils.convertToString(alidata));   AlipayTradeRefundResponse response = alipayClient.execute(request);   strResponse=response.getCode();   if ("10000".equals(response.getCode())) {    strResponse="退款成功";   }else {    strResponse=response.getSubMsg();   }  } catch (Exception e) {   Logger.getLogger(getClass()).error("alipayRefundRequest", e);  }  return strResponse;  }