前言：
现在的APP的离不开微信支付， 现在项目里接入微信支付 ， 微信支付的官方文档是：https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=9_1 。 也很明了，这里是我的示例。
作为客户端， 需要接入的功能大概四个：
1 下预购单， 这里生成签名去请求微信， 返回预购单交易号。 再拼接客户端需要的对象，让客户端发起支付。
2 回调接口， 当APP完成支付， 微信会调用商户的回调接口， 告诉回调结果。
3 退款, 发起的支付 需要退款， 这里需要下载证书。
4 查询订单结果， 回调可能失败， 这时候需要商户服务端主动去查询 订单处理结果。
代码：
1.1 微信工具类 生成签名， 验签等
package com.yupaopao.trade.api.gateway.utils;
import com.yupaopao.trade.api.gateway.code.SignType;
import com.yupaopao.trade.api.gateway.code.WXPayConstants;
import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.input.SAXBuilder;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import java.io.*;
import java.net.ConnectException;
import java.net.HttpURLConnection;
import java.net.InetAddress;
import java.net.URL;
import java.security.MessageDigest;
import java.util.*;
public class WxUtil {
/**
* 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 {
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) {
}
return data;
}
/**
* 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");
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;
}
/**
* 生成带有 sign 的 XML 格式字符串
*
* @param data Map类型数据
* @param key API密钥
* @return 含有sign字段的XML
*/
public static String generateSignedXml(final Map<String, String> data, String key) throws Exception {
return generateSignedXml(data, key, SignType.MD5);
}
/**
* 生成带有 sign 的 XML 格式字符串
*
* @param data Map类型数据
* @param key API密钥
* @param signType 签名类型
* @return 含有sign字段的XML
*/
public static String generateSignedXml(final Map<String, String> data, String key, SignType signType) throws Exception {
String sign = generateSignature(data, key, signType);
data.put(WXPayConstants.FIELD_SIGN, sign);
return mapToXml(data);
}
/**
* 判断签名是否正确
*
* @param xmlStr XML格式数据
* @param key API密钥
* @return 签名是否正确
* @throws Exception
*/
public static boolean isSignatureValid(String xmlStr, String key) throws Exception {
Map<String, String> data = xmlToMap(xmlStr);
if (!data.containsKey(WXPayConstants.FIELD_SIGN) ) {
return false;
}
String sign = data.get(WXPayConstants.FIELD_SIGN);
return generateSignature(data, key).equals(sign);
}
/**
* 判断签名是否正确，必须包含sign字段，否则返回false。使用MD5签名。
*
* @param data Map类型数据
* @param key API密钥
* @return 签名是否正确
* @throws Exception
*/
public static boolean isSignatureValid(Map<String, String> data, String key) throws Exception {
return isSignatureValid(data, key, SignType.MD5);
}
/**
* 判断签名是否正确，必须包含sign字段，否则返回false。
*
* @param data Map类型数据
* @param key API密钥
* @param signType 签名方式
* @return 签名是否正确
* @throws Exception
*/
public static boolean isSignatureValid(Map<String, String> data, String key, SignType signType) throws Exception {
if (!data.containsKey(WXPayConstants.FIELD_SIGN) ) {
return false;
}
String sign = data.get(WXPayConstants.FIELD_SIGN);
return generateSignature(data, key, signType).equals(sign);
}
/**
* 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));
}
}
/**
* 获取随机字符串 Nonce Str
*
* @return String 随机字符串
*/
public static String generateNonceStr() {
return UUID.randomUUID().toString().replaceAll("-", "").substring(0, 32);
}
/**
* 生成 MD5
*
* @param data 待处理数据
* @return MD5结果
*/
public static String MD5(String data) throws Exception {
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] array = md.digest(data.getBytes("UTF-8"));
StringBuilder sb = new StringBuilder();
for (byte item : array) {
sb.append(Integer.toHexString((item & 0xFF) | 0x100).substring(1, 3));
}
return sb.toString().toUpperCase();
}
/**
* 生成 HMACSHA256
* @param data 待处理数据
* @param key 密钥
* @return 加密结果
* @throws Exception
*/
public static String HMACSHA256(String data, String key) throws Exception {
Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
SecretKeySpec secret_key = new SecretKeySpec(key.getBytes("UTF-8"), "HmacSHA256");
sha256_HMAC.init(secret_key);
byte[] array = sha256_HMAC.doFinal(data.getBytes("UTF-8"));
StringBuilder sb = new StringBuilder();
for (byte item : array) {
sb.append(Integer.toHexString((item & 0xFF) | 0x100).substring(1, 3));
}
return sb.toString().toUpperCase();
}
/**
* xml解析
* @param strxml
* @return
* @throws Exception
*/
public static Map<String, String> doXMLParse(String strxml) throws Exception {
Map<String,String> m = new HashMap<String,String>();
try {
strxml = strxml.replaceFirst("encoding=\".*\"", "encoding=\"UTF-8\"");
if(null == strxml || "".equals(strxml)) {
return null;
}
InputStream in = new ByteArrayInputStream(strxml.getBytes("UTF-8"));
SAXBuilder builder = new SAXBuilder();
Document doc = builder.build(in);
Element root = doc.getRootElement();
List list = root.getChildren();
Iterator it = list.iterator();
while(it.hasNext()) {
Element e = (Element) it.next();
String k = e.getName();
String v = "";
List children = e.getChildren();
if(children.isEmpty()) {
v = e.getTextNormalize();
} else {
v = getChildrenText(children);
}
m.put(k, v);
}
//关闭流
in.close();
} catch (Exception e) {
e.printStackTrace();
}
return m;
}
/**
* 获取子节点数据
* @param children
* @return
*/
public static String getChildrenText(List children) {
StringBuffer sb = new StringBuffer();
if(!children.isEmpty()) {
Iterator it = children.iterator();
while(it.hasNext()) {
Element e = (Element) it.next();
String name = e.getName();
String value = e.getTextNormalize();
List list = e.getChildren();
sb.append("<" + name + ">");
if(!list.isEmpty()) {
sb.append(getChildrenText(list));
}
sb.append(value);
sb.append("</" + name + ">");
}
}
return sb.toString();
}
//发起微信支付请求
public static String httpsRequest(String requestUrl, String requestMethod, String outputStr) {
try {
URL url = new URL(requestUrl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
// 设置请求方式（GET/POST）
conn.setRequestMethod(requestMethod);
conn.setRequestProperty("content-type", "application/x-www-form-urlencoded");
// 当outputStr不为null时向输出流写数据
if (null != outputStr) {
OutputStream outputStream = conn.getOutputStream();
// 注意编码格式
outputStream.write(outputStr.getBytes("UTF-8"));
outputStream.close();
}
// 从输入流读取返回内容
InputStream inputStream = conn.getInputStream();
InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
String str = null;
StringBuffer buffer = new StringBuffer();
while ((str = bufferedReader.readLine()) != null) {
buffer.append(str);
}
// 释放资源
bufferedReader.close();
inputStreamReader.close();
inputStream.close();
inputStream = null;
conn.disconnect();
return buffer.toString();
} catch (ConnectException ce) {
ce.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* 返回给微信服务端的xml
* @param return_code
* @return
*/
public static String returnXML(String return_code) {
return "<xml><return_code><![CDATA["
+ return_code
+ "]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>";
}
//Map转xml数据
public static String GetMapToXML(Map<String,String> param){
StringBuffer sb = new StringBuffer();
sb.append("<xml>");
for (Map.Entry<String,String> entry : param.entrySet()) {
sb.append("<"+ entry.getKey() +">");
sb.append(entry.getValue());
sb.append("</"+ entry.getKey() +">");
}
sb.append("</xml>");
return sb.toString();
}
/**
* 获取Ip
* @return
*/
public static String GetIp() {
InetAddress ia=null;
try {
ia= InetAddress.getLocalHost();
String localip=ia.getHostAddress();
return localip;
} catch (Exception e) {
return null;
}
}
public static String getRequestXml(SortedMap<String,String> parameters){
StringBuffer sb = new StringBuffer();
sb.append("<xml>");
Set es = parameters.entrySet();
Iterator it = es.iterator();
while(it.hasNext()) {
Map.Entry entry = (Map.Entry)it.next();
String k = (String)entry.getKey();
String v = (String)entry.getValue();
if ("attach".equalsIgnoreCase(k)||"body".equalsIgnoreCase(k)||"sign".equalsIgnoreCase(k)) {
sb.append("<"+k+">"+"<![CDATA["+v+"]]></"+k+">");
}else {
sb.append("<"+k+">"+v+"</"+k+">");
}
}
sb.append("</xml>");
return sb.toString();
}
}
2 service实现类
package com.yupaopao.trade.gateway.service.impl;
import com.yupaopao.trade.api.account.response.WXGzhResponse;
import com.yupaopao.trade.api.account.response.WXPayResponse;
import com.yupaopao.trade.api.gateway.code.*;
import com.yupaopao.trade.api.gateway.request.PayRequest;
import com.yupaopao.trade.api.gateway.request.RefundRequest;
import com.yupaopao.trade.api.gateway.request.WeixinOrderFindRequest;
import com.yupaopao.trade.api.gateway.sdk.qqpay.config.ClientCustomSSL;
import com.yupaopao.trade.api.gateway.utils.WxUtil;
import com.yupaopao.trade.api.payment.code.PaymentConstant;
import com.yupaopao.trade.api.payment.dto.YppException;
import com.yupaopao.trade.api.utils.IdWorker;
import com.yupaopao.trade.common.config.ThirdUrlConfig;
import com.yupaopao.trade.common.exception.TradeException;
import com.yupaopao.trade.domain.mapper.PayMapper;
import com.yupaopao.trade.domain.mapper.PaymentDetailMapper;
import com.yupaopao.trade.domain.mapper.RefundDetailMapper;
import com.yupaopao.trade.domain.model.PaymentDetail;
import com.yupaopao.trade.domain.model.RefundDetail;
import com.yupaopao.trade.gateway.service.WxPayService;
import com.yupaopao.trade.payment.service.TradeService;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContexts;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.util.ResourceUtils;
import javax.net.ssl.SSLContext;
import javax.servlet.http.HttpServletRequest;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.security.KeyStore;
import java.util.HashMap;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;
/**
* Created by zhuliangxing on 2017/4/21.
*/
@Service
public class WxpayServiceImpl implements WxPayService {
private static final Logger LOGGER = LoggerFactory.getLogger(WxpayServiceImpl.class);
@Autowired
private PayMapper payMapper;
@Autowired
private TradeService tradeService;
@Value("${third.callback.net_url}")
private String notifyUrl;
@Autowired
private PaymentDetailMapper paymentDetailsMapper;
@Autowired
private RefundDetailMapper refundDetailMapper;
/**
* 统一下单
*
* @param request
* @return
*/
public WXPayResponse wxPay(PayRequest request) {
WXPayResponse response = new WXPayResponse();
PaymentDetail detail = null;
Map<String, String> data = null;
try {
// 组装XML
String xml = WXParamGenerate(request.getSubject(), request.getOutTradeNo(), request.getTotalFee());
// 发送http请求到微信服务端，获取返回的参数
String res = WxUtil.httpsRequest(WXPayConstants.WX_PAYURL, "POST", xml);
data = WxUtil.doXMLParse(res);
detail = new PaymentDetail();
detail.setCallbackStatus(CallbackType.unCall.getStatusValue());
detail.setUserId(request.getUserId());
detail.setType(PayType.wxPay.getStatusValue());
detail.setPaymentId(request.getPaymentId());
detail.setOrderType(request.getOrderType());
detail.setTotalFee(request.getTotalFee());
detail.setStatus(PayStatus.unPay.getStatusValue());
detail.setOutTradeNo(request.getOutTradeNo());
detail.setSubject(request.getSubject());
Map<String, String> param = new HashMap<String, String>();
param.put("appid", WXPayConstants.APP_ID);
param.put("partnerid", WXPayConstants.MCH_ID);
param.put("prepayid", data.get("prepay_id"));
param.put("noncestr", data.get("nonce_str"));
String timeStamp = System.currentTimeMillis() / 1000 + "";
param.put("timestamp", timeStamp);
param.put("package", "Sign=WXPay");
String sign = WxUtil.generateSignature(param, WXPayConstants.WX_PARTNERKEY, SignType.MD5);
response.setAppId(WXPayConstants.APP_ID);
response.setPartnerId(WXPayConstants.MCH_ID);
response.setTimestamp(timeStamp);
response.setNoncestr(data.get("nonce_str"));
response.setSign(sign);
response.setPrepayId(data.get("prepay_id"));
paymentDetailsMapper.insertPayment(detail);
return response;
} catch (Exception e) {
throw new YppException(PayException.xmlParseError);
}
}
/**
* 微信统一下单参数设置
*
* @param description
* @param orderOutId
* @param totalFee
* @return
* @throws Exception
*/
public String WXParamGenerate(String description, String orderOutId, Long totalFee) throws Exception {
Map<String, String> param = new HashMap<String, String>();
param.put("appid", WXPayConstants.APP_ID);
param.put("mch_id", WXPayConstants.MCH_ID);
param.put("nonce_str", WxUtil.generateNonceStr());
param.put("body", description);
param.put("out_trade_no", orderOutId);
param.put("total_fee", totalFee + "");
param.put("spbill_create_ip", WxUtil.GetIp());
param.put("notify_url", notifyUrl + WXPayConstants.NOTIFU_URL);
param.put("trade_type", "APP");
String sign = WxUtil.generateSignature(param, WXPayConstants.WX_PARTNERKEY, SignType.MD5);
param.put("sign", sign);
return WxUtil.GetMapToXML(param);
}
/**
* 拼接微信退款XML
*
* @param request
* @return
* @throws Exception
*/
public static SortedMap<String, String> WXRefundParamGenerate(RefundRequest request) {
SortedMap<String, String> param = new TreeMap<String, String>();
try {
param.put("appid", WXPayConstants.APP_ID);
param.put("mch_id", WXPayConstants.MCH_ID);
param.put("nonce_str", WxUtil.generateNonceStr());
param.put("out_trade_no", request.getOutTradeNo());
// 支付网关生成订单流水
param.put("out_refund_no", String.valueOf(IdWorker.nextId()));
param.put("total_fee", String.valueOf(request.getTotalFee()));// 单位为分
param.put("refund_fee", String.valueOf(request.getRefundFee()));// 单位为分
param.put("op_user_id", WXPayConstants.MCH_ID);// 操作人员,默认为商户账号
String sign = WxUtil.generateSignature(param, WXPayConstants.WX_PARTNERKEY, SignType.MD5);
param.put("sign", sign);
} catch (Exception e) {
throw new YppException(PayException.signError);
}
return param;
}
/**
* 解析微信返回的xml 参数
*
* @param request
*/
public Map<String, String> xmlParserCallback(HttpServletRequest request) {
Map<String, String> map = null;
BufferedReader reader = null;
String line = "";
String xmlString = null;
try {
reader = request.getReader();
StringBuffer inputString = new StringBuffer();
while ((line = reader.readLine()) != null) {
inputString.append(line);
}
xmlString = inputString.toString();
request.getReader().close();
LOGGER.info("----接收到的数据如下：---" + xmlString);
map = WxUtil.doXMLParse(xmlString);
} catch (Exception e) {
throw new YppException(PayException.xmlParseError);
}
return map;
}
/**
* IO解析获取微信的数据
*
* @param request
* @return
*/
public String getXmlString(HttpServletRequest request) {
BufferedReader reader = null;
String line = "";
String xmlString = null;
try {
reader = request.getReader();
StringBuffer inputString = new StringBuffer();
while ((line = reader.readLine()) != null) {
inputString.append(line);
}
xmlString = inputString.toString();
} catch (Exception e) {
throw new YppException(PayException.xmlParseError);
}
return xmlString;
}
/**
* 微信回调
*
* @param request
* @return
*/
public String wxNotify(HttpServletRequest request) {
LOGGER.info("微信正在回调》》》》》》》》》");
PaymentDetail detail = null;
String xmlString = "";
String lastXml = "";
try {
xmlString = getXmlString(request);
LOGGER.info("微信返回的回调结果是：：：：：：：" + xmlString);
// 先解析返回的数据
Map<String, String> dataMap = WxUtil.xmlToMap(xmlString);
String returnCode = dataMap.get("return_code");
// 通信成功
if (ReturnStatus.success.getStatusValue().equals(returnCode)) {
LOGGER.info("通信成功++++++++++++");
// 验证通过才能记到流水表中，否则不计入
if (WxUtil.isSignatureValid(xmlString, WXPayConstants.WX_PARTNERKEY)) {
try {
detail = new PaymentDetail();
detail.setTradeNo(dataMap.get("transaction_id"));
detail.setOutTradeNo(dataMap.get("out_trade_no"));
if (dataMap.get("result_code").equals(ReturnStatus.success)) {
detail.setStatus(PayStatus.paySuccess.getStatusValue());
} else {
detail.setStatus(PayStatus.payFail.getStatusValue());
}
detail.setType(PayType.wxPay.getStatusValue());
// 设置为已经回调
detail.setCallbackStatus(CallbackType.callable.getStatusValue());
paymentDetailsMapper.updatePayment(detail);
} catch (Exception e) {
e.printStackTrace();
}
}
tradeService.dealWithPayCallBack(dataMap.get("out_trade_no").toString(),
dataMap.get("transaction_id").toString(), PaymentConstant.PayCallBackStatus.SUCCESS,
PaymentConstant.TradeAction.WEIXIN_ACCOUNT);
lastXml = WxUtil.returnXML(ReturnStatus.success.getStatusValue());
} else {
lastXml = WxUtil.returnXML(ReturnStatus.fail.getStatusValue());
}
} catch (Exception e) {
throw new TradeException(GatewayCode.PayBackError);
}
LOGGER.info("最终给微信的结果是：" + lastXml);
return lastXml;
}
/**
* 微信退款
*
* @param request
* @return
*/
public String wxRefund(RefundRequest request) {
RefundDetail detail = null;
// 拼装Map
SortedMap<String, String> map = WXRefundParamGenerate(request);
// 拼装XML
String requestXml = WxUtil.getRequestXml(map);
// 获取返回数据
String refundResult = "";
try {
refundResult = ClientCustomSSL.doRefund(WXPayConstants.WX_REFUND, requestXml);
} catch (Exception e) {
throw new TradeException(GatewayCode.RefundBackXmlError);
}
System.out.println("退款产生的json字符串：" + refundResult);
// 转换为Map
Map<String, String> responseMap = new HashMap<>();
try {
responseMap = WxUtil.doXMLParse(refundResult);
} catch (Exception e) {
throw new TradeException(GatewayCode.RefundBackXmlError);
}
String returnCode = responseMap.get("return_code");
// 通信正常
if (returnCode.equals(ReturnStatus.success.getStatusValue())) {
String resultCode = responseMap.get("result_code");
detail = new RefundDetail();
// 微信生成的退款ID
String tradeNo = responseMap.get("out_refund_no");
detail.setTradeNo(tradeNo);
detail.setRefundId(IdWorker.unique());
detail.setType(PayType.wxPay.getStatusValue());
detail.setUserId(request.getUserId());
detail.setSubject(responseMap.get("err_code_des"));
detail.setorderOutId(request.getOutTradeNo());
detail.setRefundFee(request.getRefundFee());
detail.setTotalFee(request.getTotalFee());
detail.setOriginTradeNo(tradeNo);
// 退款成功
if (resultCode.equals(ReturnStatus.success)) {
detail.setStatus(PayStatus.paySuccess.getStatusValue());
payMapper.saveRefund(detail);
return ReturnStatus.success.getStatusValue();
} else {
detail.setStatus(PayStatus.payFail.getStatusValue());
refundDetailMapper.insertRefund(detail);
return ReturnStatus.fail.getStatusValue();
}
} else {
throw new TradeException(GatewayCode.RefundHasGone);
}
}
/**
* 微信公众号支付下单
*/
@Override
public WXGzhResponse wxGZHPay(PayRequest request) {
WXGzhResponse response = new WXGzhResponse();
PaymentDetail detail = null;
Map<String, String> data = null;
try {
// 组装XML
String xml = WXGZHParamGenerate(request.getSubject(), request.getOutTradeNo(), request.getTotalFee(),
request.getPayExt().get("openId").toString());
// 发送http请求到微信服务端，获取返回的参数
String res = WxUtil.httpsRequest(WXPayConstants.WX_PAYURL, "POST", xml);
data = WxUtil.doXMLParse(res);
detail = new PaymentDetail();
detail.setCallbackStatus(CallbackType.unCall.getStatusValue());
detail.setUserId(request.getUserId());
detail.setType(PayType.wxPay.getStatusValue());
detail.setPaymentId(request.getPaymentId());
detail.setOrderType(request.getOrderType());
detail.setTotalFee(request.getTotalFee());
detail.setStatus(PayStatus.unPay.getStatusValue());
detail.setOutTradeNo(request.getOutTradeNo());
detail.setSubject(request.getSubject());
String timeStamp = System.currentTimeMillis() / 1000 + "";
Map<String, String> param = new HashMap<String, String>();
param.put("appId", WXPayConstants.WEIXIN_GZH_APPID);
param.put("signType", "MD5");
param.put("nonceStr", data.get("nonce_str"));
param.put("timeStamp", timeStamp);
param.put("package", "prepay_id=" + data.get("prepay_id"));
String sign = WxUtil.generateSignature(param, WXPayConstants.WEIXIN_GZH_KEY, SignType.MD5);
response.setAppId(WXPayConstants.WEIXIN_GZH_APPID);
response.setNonceStr(data.get("nonce_str"));
response.setPaySign(sign);
response.setTimeStamp(timeStamp);
response.setWxpackage("prepay_id=" + data.get("prepay_id"));
response.setSignType("MD5");
payMapper.saveDetail(detail);
return response;
} catch (Exception e) {
e.printStackTrace();
throw new YppException(PayException.xmlParseError);
}
}
/**
* 微信公众号统一下单
*
* @param description
* @param orderOutId
* @param totalFee
* @return
* @throws Exception
*/
public String WXGZHParamGenerate(String description, String orderOutId, Long totalFee, String openId)
throws Exception {
Map<String, String> param = new HashMap<String, String>();
param.put("appid", WXPayConstants.WEIXIN_GZH_APPID);
param.put("mch_id", WXPayConstants.WEIXIN_GZH_MACHID);
param.put("nonce_str", WxUtil.generateNonceStr());
param.put("body", description);
param.put("out_trade_no", orderOutId);
param.put("openid", openId);
param.put("total_fee", totalFee + "");
param.put("spbill_create_ip", WxUtil.GetIp());
param.put("notify_url", notifyUrl + WXPayConstants.NOTIFU_URL);
param.put("trade_type", "JSAPI");
String sign = WxUtil.generateSignature(param, WXPayConstants.WEIXIN_GZH_KEY, SignType.MD5);
param.put("sign", sign);
return WxUtil.GetMapToXML(param);
}
/**
* 微信公众号账单查询
*/
@Override
public void wxGZHOrderFind(WeixinOrderFindRequest request) {
Map<String, String> data = null;
try {
String xml = WXGZHOrderGenerate(request.getOutTradeNo());
String res = WxUtil.httpsRequest(WXPayConstants.WEIXIN_ORDER_FIND_URL, "POST", xml);
data = WxUtil.doXMLParse(res);
// 通信异常
if (!data.get("return_code").equals("SUCCESS")) {
throw new TradeException(GatewayCode.CommunicationError);
}
if (!data.get("result_code").equals("SUCCESS")) {
throw new TradeException(GatewayCode.OrderFindErrror);
}
if (!data.get("trade_state").equals("SUCCESS")) {
throw new TradeException(GatewayCode.OrderPayError);
}
} catch (Exception e) {
throw new TradeException(GatewayCode.PayXmlError);
}
}
/**
* 微信公众号生成订单。
*
* @param orderOutId
* @return
* @throws Exception
*/
public String WXGZHOrderGenerate(String orderOutId) throws Exception {
Map<String, String> param = new HashMap<String, String>();
param.put("appid", WXPayConstants.WEIXIN_GZH_APPID);
param.put("mch_id", WXPayConstants.WEIXIN_GZH_MACHID);
param.put("nonce_str", WxUtil.generateNonceStr());
param.put("out_trade_no", orderOutId);
String sign = WxUtil.generateSignature(param, WXPayConstants.WEIXIN_GZH_KEY, SignType.MD5);
param.put("sign", sign);
return WxUtil.GetMapToXML(param);
}
}
3下单返回的参数model 给 APP
package com.yupaopao.trade.api.account.response;
import com.alibaba.fastjson.JSONObject;
public class WXPayResponse {
private String appId;
private String partnerId;
private String wxpackage="Sign=WXPay";
private String noncestr;
private String timestamp;
private String sign;
private String prepayId;
public String getAppId() {
return appId;
}
public void setAppId(String appId) {
this.appId = appId;
}
public String getPartnerId() {
return partnerId;
}
public void setPartnerId(String partnerId) {
this.partnerId = partnerId;
}
public String getWxpackage() {
return wxpackage;
}
public void setWxpackage(String wxpackage) {
this.wxpackage = wxpackage;
}
public String getNoncestr() {
return noncestr;
}
public void setNoncestr(String noncestr) {
this.noncestr = noncestr;
}
public String getTimestamp() {
return timestamp;
}
public void setTimestamp(String timestamp) {
this.timestamp = timestamp;
}
public String getSign() {
return sign;
}
public void setSign(String sign) {
this.sign = sign;
}
public String getPrepayId() {
return prepayId;
}
public void setPrepayId(String prepayId) {
this.prepayId = prepayId;
}
@Override
public String toString() {
JSONObject json = new JSONObject();
json.put("appId", appId);
json.put("partnerId", partnerId);
json.put("wxpackage", wxpackage);
json.put("noncestr", noncestr);
json.put("timestamp", timestamp);
json.put("sign", sign);
json.put("prepayId", prepayId);
return json.toString();
}
}
/**
* 微信支付回调
*
* @param request
* @param response
* @return
* @throws Exception
*/
@RequestMapping(method = RequestMethod.POST, value = "/wx/wxCallback")
public YppResponse wxCallback(HttpServletRequest request, HttpServletResponse response) throws Exception {
return YppResponse.success(wxPayService.wxNotify(request));
}
时间： 2024-10-10 08:04:28