//企业付款到零钱 public Result returnWechatMoney(HttpServletRequest request, String money, String openId) throws Exception { //1.0 拼凑企业支付需要的参数 //2.0 生成map集合 Map<String, String> params = new HashMap<>(); params.put("mch_appid", WXPayConfig.APPID);//微信公众号的appid
params.put("mchid", WXPayConfig.mch_id);//商户号
params.put("nonce_str", WXPayUtil.generateNonceStr());//随机生成后数字，保证安全性
params.put("partner_trade_no", WXPayUtil.getorderid());//生成商户订单号
params.put("openid", openId);// 支付给用户openid params.put("check_name", "NO_CHECK");//是否验证真实姓名呢
params.put("re_user_name", "邻里用户");//收款用户姓名
params.put("amount", money);//企业付款金额，单位为分
params.put("desc", "退还篮子奖励金/收益提现");//企业付款操作说明信息。必填。
params.put("spbill_create_ip", WXPayUtil.getAddrIp(request));//调用接口的机器Ip地址 //3.0 生成自己的签名 try { String sign = WXPayUtil.generateSignature(params, NowData.PATERNERKEY);//签名 params.put("sign", sign);//封装退款对象 String orderxml = WXPayUtil.mapToXml(params); //将数据转成XML格式 String ru = CertHttpUtil.postData("https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers",orderxml, WXPayConfig.mch_id, WXPayConfig.certificate_url);//退还零钱 Map<String, String> returnMap = WXPayUtil.xmlToMap(ru);//接口返回数据 if (returnMap.containsKey("result_code") && returnMap.get("result_code").equals("SUCCESS")) { return new Result(true, StatusCode.OK, "企业付款到零钱成功。"); } else if (returnMap.containsKey("err_code") && returnMap.get("err_code").equals("AMOUNT_LIMIT")) {//商户金额不足 return new Result(false, StatusCode.AMOUNT_LIMIT, "商户余额不足，请联系相关人员处理。"); } else if (returnMap.containsKey("err_code") && returnMap.get("err_code").equals("SENDNUM_LIMIT")) {//该用户今日付款次数超过限制 return new Result(false, StatusCode.SENDNUM_LIMIT, "该用户今日付款次数超过限制,如有需要请登录微信支付商户平台更改API安全配置."); } else if (returnMap.containsKey("err_code") && returnMap.get("err_code").equals("OPENID_ERROR")) { return new Result(false, StatusCode.OPENID_ERROR, "openid与商户appid不匹配."); } else if (returnMap.containsKey("err_code") && returnMap.get("err_code").equals("MONEY_LIMIT")) {//已达到付款给此用户额度上限. return new Result(false, StatusCode.MONEY_LIMIT, "已达到付款给此用户额度上限."); } else { return new Result(false, StatusCode.ERROR, "企业付款到零钱出现未知错误。"); } } catch (Exception e) { throw e; } }
//获取机器ip地址 public static String getAddrIp(HttpServletRequest req) { String ip = req.getHeader("x-forwarded-for"); if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = req.getHeader("Proxy-Client-IP"); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = req.getHeader("WL-Proxy-Client-IP"); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = req.getHeader("HTTP_CLIENT_IP"); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = req.getHeader("HTTP_X_FORWARDED_FOR"); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = req.getRemoteAddr(); } System.out.println("--------------ip----------" + ip); return ip; } /** * 生成签名 * * @param data 待签名数据 * @param key API密钥 * @return 签名 */ public static String generateSignature(final Map<String, String> data, String key) throws Exception { return generateSignature(data, key, SignType.MD5); } /** * 生成签名. 注意，若含有sign_type字段，必须和signType参数保持一致。 * * @param data 待签名数据 * @param key API密钥 * @param signType 签名方式 * @return 签名 */ public static String generateSignature(final Map<String, String> data, String key, SignType signType) throws Exception { Set<String> keySet = data.keySet(); String[] keyArray = keySet.toArray(new String[keySet.size()]); Arrays.sort(keyArray); StringBuilder sb = new StringBuilder(); for (String k : keyArray) { if (k.equals(WXPayConstants.FIELD_SIGN)) { continue; } if (data.get(k).trim().length() > 0) // 参数值为空，则不参与签名 sb.append(k).append("=").append(data.get(k).trim()).append("&"); } sb.append("key=").append(key); if (SignType.MD5.equals(signType)) { return MD5(sb.toString()).toUpperCase(); } else if (SignType.HMACSHA256.equals(signType)) { return HMACSHA256(sb.toString(), key); } else { throw new Exception(String.format("Invalid sign_type: %s", signType)); } }
/** * 将Map转换为XML格式的字符串 * * @param data Map类型数据 * @return XML格式的字符串 * @throws Exception */ public static String mapToXml(Map<String, String> data) throws Exception { DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance(); DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder(); org.w3c.dom.Document document = documentBuilder.newDocument(); org.w3c.dom.Element root = document.createElement("xml"); document.appendChild(root); for (String key : data.keySet()) { String value = data.get(key); if (value == null) { value = ""; } value = value.trim(); org.w3c.dom.Element filed = document.createElement(key); filed.appendChild(document.createTextNode(value)); root.appendChild(filed); } TransformerFactory tf = TransformerFactory.newInstance(); Transformer transformer = tf.newTransformer(); DOMSource source = new DOMSource(document); transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");//ISO8859-1 transformer.setOutputProperty(OutputKeys.INDENT, "yes"); StringWriter writer = new StringWriter(); StreamResult result = new StreamResult(writer); transformer.transform(source, result); String output = writer.getBuffer().toString(); //.replaceAll("\n|\r", ""); try { writer.close(); } catch (Exception ex) { } return output; }
package WXPay; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.security.KeyStore; import javax.net.ssl.SSLContext; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.config.RequestConfig; import org.apache.http.client.methods.HttpPost; import org.apache.http.conn.ssl.SSLConnectionSocketFactory; import org.apache.http.conn.ssl.SSLContexts; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.util.EntityUtils; /** * 获取微信apiclient_cert.p12证书 */ @SuppressWarnings("deprecation") public class CertHttpUtil { private static int socketTimeout = 10000;// 连接超时时间，默认10秒 private static int connectTimeout = 30000;// 传输超时时间，默认30秒 private static RequestConfig requestConfig;// 请求器的配置 private static CloseableHttpClient httpClient;// HTTP请求器 /** * 通过Https往API post xml数据 * * @param url API地址 * @param xmlObj 要提交的XML数据对象 * @param mchId 商户ID * @param certPath 证书位置 * @return */ public static String postData(String url, String xmlObj, String mchId, String certPath) { // 加载证书 try { initCert(mchId, certPath); } catch (Exception e) { e.printStackTrace(); } String result = null; HttpPost httpPost = new HttpPost(url); // 得指明使用UTF-8编码，否则到API服务器XML的中文不能被成功识别 StringEntity postEntity = new StringEntity(xmlObj, "UTF-8"); httpPost.addHeader("Content-Type", "text/xml"); httpPost.setEntity(postEntity); // 根据默认超时限制初始化requestConfig requestConfig = RequestConfig.custom().setSocketTimeout(socketTimeout).setConnectTimeout(connectTimeout).build(); // 设置请求器的配置 httpPost.setConfig(requestConfig); try { HttpResponse response = null; try { response = httpClient.execute(httpPost); } catch (IOException e) { e.printStackTrace(); } HttpEntity entity = response.getEntity(); try { result = EntityUtils.toString(entity, "UTF-8"); } catch (IOException e) { e.printStackTrace(); } } finally { httpPost.abort(); } return result; } /** * 加载证书 * * @param mchId 商户ID * @param certPath 证书位置 * @throws Exception */ private static void initCert(String mchId, String certPath) throws Exception { // 证书密码，默认为商户ID String key = mchId; // 证书的路径 String path = certPath; // 指定读取证书格式为PKCS12 KeyStore keyStore = KeyStore.getInstance("PKCS12"); // 读取本机存放的PKCS12证书文件 FileInputStream instream = new FileInputStream(new File(path)); try { // 指定PKCS12的密码(商户ID) keyStore.load(instream, key.toCharArray()); } finally { instream.close(); } SSLContext sslcontext = SSLContexts.custom().loadKeyMaterial(keyStore, key.toCharArray()).build(); SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslcontext, new String[] {"TLSv1"}, null, SSLConnectionSocketFactory.BROWSER_COMPATIBLE_HOSTNAME_VERIFIER); httpClient = HttpClients.custom().setSSLSocketFactory(sslsf).build(); } }
/** * XML格式字符串转换为Map * * @param strXML XML字符串 * @return XML数据转换后的Map * @throws Exception */ public static Map<String, String> xmlToMap(String strXML) throws Exception { try { Map<String, String> data = new HashMap<String, String>(); DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance(); DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder(); InputStream stream = new ByteArrayInputStream(strXML.getBytes("UTF-8")); org.w3c.dom.Document doc = documentBuilder.parse(stream); doc.getDocumentElement().normalize(); NodeList nodeList = doc.getDocumentElement().getChildNodes(); for (int idx = 0; idx < nodeList.getLength(); ++idx) { Node node = nodeList.item(idx); if (node.getNodeType() == Node.ELEMENT_NODE) { org.w3c.dom.Element element = (org.w3c.dom.Element) node; data.put(element.getNodeName(), element.getTextContent()); } } try { stream.close(); } catch (Exception ex) { // do nothing } return data; } catch (Exception ex) { WXPayUtil.getLogger().warn("Invalid XML, can not convert to map. Error message: {}. XML content: {}", ex.getMessage(), strXML); throw ex; } }