Java微信APP支付-統一下單
最近因為公司的業務需要,需要自主開發一套類似淘寶、京東的購物APP系統,本人負責後端線上支付模組介面的開發,主要包含微信、支付寶的統一下單、支付結果通知、申請退款、退款結果通知等介面的開發。費話不多說,我們這一章主要講述微信APP支付的統一下單介面的開發。
這裡我們先講述一下總體流程
商戶系統和微信支付系統主要互動說明:
步驟1:使用者在商戶APP中選擇商品,提交訂單,選擇微信支付。
步驟2:商戶後臺收到使用者支付單,呼叫微信支付統一下單介面。參見【統一下單API】。
步驟3:統一下單介面返回正常的prepay_id,再按簽名規範重新生成簽名後,將資料傳輸給APP。參與簽名的欄位名為appid,partnerid,prepayid,noncestr,timestamp,package。注意:package的值格式為Sign=WXPay
步驟4:商戶APP調起微信支付。api參見本章節【app端開發步驟說明】
步驟5:商戶後臺接收支付通知。api參見【支付結果通知API】
步驟6:商戶後臺查詢支付結果。api參見【查詢訂單API】
1、應用場景
商戶系統先呼叫該介面在微信支付服務後臺生成預支付交易單,返回正確的預支付交易會話標識後再在APP裡面調起支付。
2、介面連結
URL地址:https://api.mch.weixin.qq.com/pay/unifiedorder
3、是否需要證書
不需要
4、請求引數
此處列出必要的引數,如需要檢視詳細引數,請查閱官方API。
欄位名 | 變數名 | 必填 | 型別 | 示例值 | 描述 |
應用ID | appid | 是 | String(32) | wxd678efh567hg6787 | 微信開放平臺稽核通過的應用APPID(請登入open.weixin.qq.com檢視,注意與公眾號的APPID不同) |
商戶號 | mch_id | 是 | String(32) | 1230000109 | 微信支付分配的商戶號 |
隨機字串 | nonce_str | 是 | String(32) | 5K8264ILTKCH16CQ2502SI8ZNMTM67VS | 隨機字串,不長於32位。推薦隨機數生成演算法 |
簽名 | sign | 是 | String(32) | C380BEC2BFD727A4B6845133519F3AD6 | |
商品描述 | body | 是 | String(128) | 騰訊充值中心-QQ會員充值 |
商品描述交易欄位格式根據不同的應用場景按照以下格式: APP——需傳入應用市場上的APP名字-實際商品名稱,天天愛消除-遊戲充值。 |
商戶訂單號 | out_trade_no | 是 | String(32) | 20150806125346 | 商戶系統內部訂單號,要求32個字元內,只能是數字、大小寫字母_-|*且在同一個商戶號下唯一。詳見商戶訂單號 |
總金額 | total_fee | 是 | Int | 888 | 訂單總金額,單位為分,詳見支付金額 |
終端IP | spbill_create_ip | 是 | String(16) | 123.12.12.123 | 使用者端實際ip |
通知地址 | notify_url | 是 | String(256) | http://www.weixin.qq.com/wxpay/pay.php | 接收微信支付非同步通知回撥地址,通知url必須為直接可訪問的url,不能攜帶引數。 |
交易型別 | trade_type | 是 | String(16) | APP | 支付型別 |
5、程式碼實現
5.1基礎類
WeChatConfig配置類,主要包含微信的配置資訊
package com.hisap.xql.api.common.wechat;
/**
* @Author: QijieLiu
* @Description: 微信配置資訊
* @Date: Created in 16:47 2018/8/14
*/
public class WeChatConfig {
public static String APP_ID = "xxxxxx";
public static String MCH_ID = "xxxxxx";
public static String MCH_KEY = "xxxxxx";
public static String APP_SECRET = "xxxxxx";
public static String UNIFIEDORDER_URL = "https://api.mch.weixin.qq.com/pay/unifiedorder";
public static String NOTIFY_URL = "http://xxx.xxx.xxx.xxx:8080/XqlApi/wechatpay/paynotify";
public static String REFUND_URL = "https://api.mch.weixin.qq.com/secapi/pay/refund";
public static String REFUND_NOTIFY_URL = "http://xxx.xxx.xxx.xxx:8080/XqlApi/wechatpay/refundnotify";
public static String TRADE_TYPE = "APP";
public static String CERT_URL="E:\\cert\\apiclient_cert.p12";
}
ResponseJson基礎類,主要與APP前端進行互動
package com.hisap.xql.api.common.bean;
public class ResponseJson {
// 結果碼
private String code;
// 結果說明
private String message;
// 內容
private Object data;
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public Object getData() {
return data;
}
public void setData(Object data) {
this.data = data;
}
}
5.2工具類
MD5Utils類
package com.hisap.xql.api.common.utils;
import java.security.MessageDigest;
/**
* @Author: QijieLiu
* @Description: MD5加密工具
* @Date: Created in 09:39 2018/8/17
*/
public class MD5Utils {
public final static String MD5(String s) {
char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
try {
byte[] btInput = s.getBytes();
// 獲得MD5摘要演算法的 MessageDigest 物件
MessageDigest mdInst = MessageDigest.getInstance("MD5");
// 使用指定的位元組更新摘要
mdInst.update(btInput);
// 獲得密文
byte[] md = mdInst.digest();
// 把密文轉換成十六進位制的字串形式
int j = md.length;
char str[] = new char[j * 2];
int k = 0;
for (int i = 0; i < j; i++) {
byte byte0 = md[i];
str[k++] = hexDigits[byte0 >>> 4 & 0xf];
str[k++] = hexDigits[byte0 & 0xf];
}
return new String(str);
}
catch (Exception e) {
e.printStackTrace();
return null;
}
}
private static String byteArrayToHexString(byte b[]) {
StringBuffer resultSb = new StringBuffer();
for (int i = 0; i < b.length; i++)
resultSb.append(byteToHexString(b[i]));
return resultSb.toString();
}
private static String byteToHexString(byte b) {
int n = b;
if (n < 0)
n += 256;
int d1 = n / 16;
int d2 = n % 16;
return hexDigits[d1] + hexDigits[d2];
}
public static String MD5Encode(String origin, String charsetname) {
String resultString = null;
try {
resultString = new String(origin);
MessageDigest md = MessageDigest.getInstance("MD5");
if (charsetname == null || "".equals(charsetname))
resultString = byteArrayToHexString(md.digest(resultString.getBytes()));
else
resultString = byteArrayToHexString(md.digest(resultString.getBytes(charsetname)));
}
catch (Exception exception) {
}
return resultString;
}
private static final String hexDigits[] = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };
public static void main(String[] asd) {
String con = "hello kitty";
String str = MD5Encode(con, "UTF-8");
System.out.println(str.toUpperCase());
}
}
DateUtil類
package com.hisap.xql.api.common.utils;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
public class DateUtil {
public static final String DF_STANDARD = "yyyy-MM-dd HH:mm:ss";
public static final String DF_DATE = "yyyy-MM-dd";
/**
* 時間戳轉換成日期格式字串
* @param seconds 精確到毫秒的字串
* @param formatStr
* @return
*/
public static String timeStamp2Date(String miniSeconds, String format) {
if (miniSeconds == null || miniSeconds.isEmpty() || miniSeconds.equals("null")) {
return null;
}
if (format == null || format.isEmpty()) {
format = "yyyy-MM-dd HH:mm:ss";
}
SimpleDateFormat sdf = new SimpleDateFormat(format);
return sdf.format(new Date(Long.valueOf(miniSeconds)));
}
/**
* 獲取精確到秒的時間戳
* @param date
* @return
*/
public static Integer getSecondTimestamp(Date date) {
if (null == date) {
return 0;
}
String timestamp = String.valueOf(date.getTime() / 1000);
return Integer.valueOf(timestamp);
}
/**
* 字串轉時間
* @param date
* @param dateFormat
* @return
*/
public static Date stringToDate(String date, String dateFormat) {
SimpleDateFormat formatDate = new SimpleDateFormat(dateFormat);
try {
return formatDate.parse(date);
} catch (ParseException e) {
e.printStackTrace();
}
return null;
}
/**
* 日期轉字串
* @param date
* @param dateFormat
* @return
*/
public static String dateToString(Date date, String dateFormat) {
SimpleDateFormat formatDate = new SimpleDateFormat(dateFormat);
return formatDate.format(date);
}
/**
* 驗證時間合法性
* @param date
* @param dateFormat
* @return
*/
public static boolean isValidDateTime(String date, String dateFormat) {
boolean convertSuccess = true;
SimpleDateFormat formatDate = new SimpleDateFormat(dateFormat);
try {
// 設定lenient為false. 否則SimpleDateFormat會比較寬鬆地驗證日期,比如2007/02/29會被接受,並轉換成2007/03/01
formatDate.setLenient(false);
formatDate.parse(date);
} catch (Exception e) {
convertSuccess = false;
}
return convertSuccess;
}
/**
* 獲取幾天前的時間
* @param d
* @param day
* @return
*/
public static Date getDateBefore(Date d, int day) {
Calendar now = Calendar.getInstance();
now.setTime(d);
now.set(Calendar.DATE, now.get(Calendar.DATE) - day);
return now.getTime();
}
/**
* 獲取幾天後的時間
*
* @param d
* @param day
* @return
*/
public static Date getDateAfter(Date d, int day) {
Calendar now = Calendar.getInstance();
now.setTime(d);
now.set(Calendar.DATE, now.get(Calendar.DATE) + day);
return now.getTime();
}
}
CommonUtil類
package com.hisap.xql.api.common.wechat;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.ConnectException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.KeyStore;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Random;
import java.util.Set;
import java.util.SortedMap;
import java.util.TreeMap;
import javax.net.ssl.SSLContext;
import org.apache.http.Consts;
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.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import com.hisap.xql.api.common.utils.MD5Utils;
/**
* @Author: QijieLiu
* @Description: 微信支付工具類
* @Date: Created in 19:39 2018/8/21
*/
public class CommonUtil {
// 微信引數配置
public static String API_KEY = WeChatConfig.MCH_KEY;
// 隨機字串生成
public static String getRandomString(int length) { // length表示生成字串的長度
String base = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
Random random = new Random();
StringBuffer sb = new StringBuffer();
for (int i = 0; i < length; i++) {
int number = random.nextInt(base.length());
sb.append(base.charAt(number));
}
return sb.toString();
}
// 請求xml組裝
public static String getRequestXml(SortedMap<String, Object> 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 key = (String) entry.getKey();
String value = entry.getValue().toString();
if ("attach".equalsIgnoreCase(key) || "body".equalsIgnoreCase(key)
|| "sign".equalsIgnoreCase(key)) {
sb.append("<" + key + ">" + "<![CDATA[" + value + "]]></" + key
+ ">");
} else {
sb.append("<" + key + ">" + value + "</" + key + ">");
}
}
sb.append("</xml>");
return sb.toString();
}
// 生成簽名
public static String createSign(String characterEncoding,
SortedMap<String, Object> parameters) {
StringBuffer sb = new StringBuffer();
Set es = parameters.entrySet();
Iterator it = es.iterator();
while (it.hasNext()) {
Map.Entry entry = (Map.Entry) it.next();
String k = (String) entry.getKey();
Object v = entry.getValue();
if (null != v && !"".equals(v) && !"sign".equals(k)
&& !"key".equals(k)) {
sb.append(k + "=" + v + "&");
}
}
sb.append("key=" + API_KEY);
System.out.println(sb.toString());
String sign = MD5Utils.MD5Encode(sb.toString(), characterEncoding)
.toUpperCase();
return sign;
}
/**
* 驗證回撥簽名
*
* @param packageParams
* @param key
* @param charset
* @return
*/
public static boolean isTenpaySign(Map<String, String> map) throws UnsupportedEncodingException {
String charset = "utf-8";
String signFromAPIResponse = map.get("sign");
if (signFromAPIResponse == null || signFromAPIResponse.equals("")) {
System.out.println("API返回的資料簽名資料不存在,有可能被第三方篡改!!!");
return false;
}
System.out.println("伺服器回包裡面的簽名是:" + signFromAPIResponse);
// 過濾空 設定 TreeMap
SortedMap<String, String> packageParams = new TreeMap<>();
for (String parameter : map.keySet()) {
String parameterValue = map.get(parameter);
String v = "";
if (null != parameterValue) {
v = parameterValue.trim();
}
packageParams.put(parameter, v);
}
StringBuffer sb = new StringBuffer();
Set es = packageParams.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 (!"sign".equals(k) && null != v && !"".equals(v)) {
sb.append(k + "=" + v + "&");
}
}
sb.append("key=" + API_KEY);
// 將API返回的資料根據用簽名演算法進行計算新的簽名,用來跟API返回的簽名進行比較
// 算出簽名
String resultSign = "";
String tobesign = sb.toString();
if (null == charset || "".equals(charset)) {
resultSign = MD5Utils.MD5Encode(tobesign, charset)
.toUpperCase();
} else {
resultSign = MD5Utils.MD5Encode(tobesign, charset)
.toUpperCase();
}
String tenpaySign = ((String) packageParams.get("sign")).toUpperCase();
return tenpaySign.equals(resultSign);
}
// 請求方法
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);
// 設定請求方式(GET/POST)
conn.setRequestMethod(requestMethod);
conn.setRequestProperty("content-type",
"application/x-www-form-urlencoded");
// 當outputStr不為null時向輸出流寫資料
if (null != outputStr) {
OutputStream outputStream = conn.getOutputStream();
// 注意編碼格式
outputStream.write(outputStr.getBytes("UTF-8"));
outputStream.close();
}
// 從輸入流讀取返回內容
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);
}
// 釋放資源
bufferedReader.close();
inputStreamReader.close();
inputStream.close();
inputStream = null;
conn.disconnect();
return buffer.toString();
} catch (ConnectException ce) {
System.out.println("連線超時:{}" + ce);
} catch (Exception e) {
System.out.println("https請求異常:{}" + e);
}
return null;
}
// 退款的請求方法
public static String httpsRequest2(String requestUrl, String requestMethod,
String outputStr) throws Exception {
KeyStore keyStore = KeyStore.getInstance("PKCS12");
StringBuilder res = new StringBuilder("");
FileInputStream instream = new FileInputStream(new File(
"/home/apiclient_cert.p12"));
try {
keyStore.load(instream, "".toCharArray());
} finally {
instream.close();
}
// Trust own CA and all self-signed certs
SSLContext sslcontext = SSLContexts.custom()
.loadKeyMaterial(keyStore, "1313329201".toCharArray()).build();
// Allow TLSv1 protocol only
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
sslcontext, new String[] { "TLSv1" }, null,
SSLConnectionSocketFactory.BROWSER_COMPATIBLE_HOSTNAME_VERIFIER);
CloseableHttpClient httpclient = HttpClients.custom()
.setSSLSocketFactory(sslsf).build();
try {
HttpPost httpost = new HttpPost(
"https://api.mch.weixin.qq.com/secapi/pay/refund");
httpost.addHeader("Connection", "keep-alive");
httpost.addHeader("Accept", "*/*");
httpost.addHeader("Content-Type",
"application/x-www-form-urlencoded; charset=UTF-8");
httpost.addHeader("Host", "api.mch.weixin.qq.com");
httpost.addHeader("X-Requested-With", "XMLHttpRequest");
httpost.addHeader("Cache-Control", "max-age=0");
httpost.addHeader("User-Agent",
"Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0) ");
StringEntity entity2 = new StringEntity(outputStr, Consts.UTF_8);
httpost.setEntity(entity2);
System.out.println("executing request" + httpost.getRequestLine());
CloseableHttpResponse response = httpclient.execute(httpost);
try {
HttpEntity entity = response.getEntity();
System.out.println("----------------------------------------");
System.out.println(response.getStatusLine());
if (entity != null) {
System.out.println("Response content length: "
+ entity.getContentLength());
BufferedReader bufferedReader = new BufferedReader(
new InputStreamReader(entity.getContent()));
String text = "";
res.append(text);
while ((text = bufferedReader.readLine()) != null) {
res.append(text);
System.out.println(text);
}
}
EntityUtils.consume(entity);
} finally {
response.close();
}
} finally {
httpclient.close();
}
return res.toString();
}
// xml解析
public static Map doXMLParse(String strxml) throws JDOMException,
IOException {
strxml = strxml.replaceFirst("encoding=\".*\"", "encoding=\"UTF-8\"");
if (null == strxml || "".equals(strxml)) {
return null;
}
Map m = new HashMap();
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);
}
// 關閉流
in.close();
return m;
}
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();
}
}
5.3業務類
WeChatPayController類
package com.hisap.xql.api.controller;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.math.BigDecimal;
import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import com.alibaba.fastjson.JSONObject;
import com.hisap.xql.api.common.bean.ResponseJson;
import com.hisap.xql.api.common.constant.CodeMsg;
import com.hisap.xql.api.common.utils.CommonUtil;
import com.hisap.xql.api.common.utils.WeChatPayCommonUtil;
import com.hisap.xql.api.common.wechat.WeChatNotifyResult;
import com.hisap.xql.api.service.WeChatPayService;
/**
* @Author: QijieLiu
* @Description: 微信支付
* @Date: Created in 16:27 2018/8/14
*/
@Controller
@RequestMapping("/wechatpay")
public class WeChatPayController {
private static final Logger logger =
LoggerFactory.getLogger(WeChatPayController.class);
@Autowired
private WeChatPayService weChatPayService;
@RequestMapping("/unifiedorder")
@ResponseBody
public ResponseJson unifiedorder(String orderNo) {
ResponseJson responseJson = new ResponseJson();
try{
responseJson = weChatPayService.unifiedorder(new BigDecimal(orderNo));
}catch (Exception e) {
e.printStackTrace();
logger.error("微信統一下單介面服務端異常,異常資訊---" + e.getMessage(), e);
return CommonUtil.createResponseJson(
CodeMsg.SERVER_ERROR_CODE, CodeMsg.SERVER_ERROR_MSG, new JSONObject());
}
return responseJson;
}
}
WeChatPayService介面類
package com.hisap.xql.api.service;
import java.math.BigDecimal;
import com.hisap.xql.api.common.bean.ResponseJson;
import com.hisap.xql.api.common.wechat.WeChatNotifyResult;
/**
* @Author: QijieLiu
* @Description: 微信支付
* @Date: Created in 16:35 2018/8/14
*/
public interface WeChatPayService {
ResponseJson unifiedorder(BigDecimal orderNo) throws Exception;
}
WeChatPayServiceImpl介面實現類
package com.hisap.xql.api.service.impl;
import java.math.BigDecimal;
import java.util.List;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.alibaba.fastjson.JSONObject;
import com.hisap.xql.api.common.bean.ResponseJson;
import com.hisap.xql.api.common.constant.CodeMsg;
import com.hisap.xql.api.common.utils.Collections3;
import com.hisap.xql.api.common.utils.CommonUtil;
import com.hisap.xql.api.common.wechat.WeChatConfig;
import com.hisap.xql.api.dao.XqlOrderGoodsMapper;
import com.hisap.xql.api.dao.XqlWxRefundLogMapper;
import com.hisap.xql.api.model.XqlOrder;
import com.hisap.xql.api.model.XqlOrderGoods;
import com.hisap.xql.api.model.XqlOrderGoodsExample;
import com.hisap.xql.api.service.WeChatPayService;
import com.hisap.xql.api.service.XqlOrderService;
import com.lijing.wechatpay.conn.PaymentTools;
import com.lijing.wechatpay.util.PayMD5;
@Service
public class WeChatPayServiceImpl implements WeChatPayService {
private static final Logger logger = LoggerFactory
.getLogger(WeChatPayServiceImpl.class);
@Autowired
XqlOrderService xqlOrderServiceImpl;
@Autowired
XqlOrderGoodsMapper xqlOrderGoodsMapper;
@Autowired
XqlWxRefundLogMapper xqlWxRefundLogMapper;
/**
* 統一下單
*
* @param characterEncoding
* @param parameters
* @return
*/
@Override
public ResponseJson unifiedorder(BigDecimal orderNo) throws Exception {
ResponseJson responseJson = new ResponseJson();
/** 訂單主資訊 */
XqlOrder xqlOrder = xqlOrderServiceImpl
.selectXqlOrderByOrderNo(orderNo);
if (xqlOrder == null) {
return CommonUtil.createResponseJson(CodeMsg.ORDER_NOT_EXIST_CODE,
CodeMsg.ORDER_NOT_EXIST_MSG, new JSONObject());
}
/** 訂單明細資訊 */
XqlOrderGoodsExample xqlOrderGoodsExample = new XqlOrderGoodsExample();
XqlOrderGoodsExample.Criteria criteria = xqlOrderGoodsExample
.createCriteria();
criteria.andOrderNoEqualTo(orderNo);
List<XqlOrderGoods> xqlOrderGoodsList = xqlOrderGoodsMapper
.selectByExample(xqlOrderGoodsExample);
if (Collections3.isEmpty(xqlOrderGoodsList)) {
return CommonUtil.createResponseJson(
CodeMsg.ORDER_ITEM_NOT_EXIST_CODE,
CodeMsg.ORDER_ITEM_NOT_EXIST_MSG, new JSONObject());
}
XqlOrderGoods xqlOrderGoods = xqlOrderGoodsList.get(0);
//待新增驗證庫存、微信券邏輯
TreeMap<String, Object> parameters = new TreeMap<String, Object>();
parameters.put("appid", WeChatConfig.APP_ID);
parameters.put("mch_id", WeChatConfig.MCH_ID);
parameters.put("nonce_str", PayMD5.GetMD5nonce_str());
parameters.put("body", xqlOrderGoods.getGoodsName());
parameters.put("out_trade_no", orderNo.toString());
parameters.put("total_fee", xqlOrder.getOrderAmount());
parameters.put("spbill_create_ip", PaymentTools.getServerIP());
parameters.put("notify_url", WeChatConfig.NOTIFY_URL);
parameters.put("trade_type", WeChatConfig.TRADE_TYPE);
String sign = com.hisap.xql.api.common.wechat.CommonUtil.createSign("UTF-8", parameters);
parameters.put("sign", sign); // 把簽名後的資料組裝成引數
String tosend = com.hisap.xql.api.common.wechat.CommonUtil.getRequestXml(parameters);
logger.info("微信統一下單請求資料xml:" + tosend);
try {
String result = com.hisap.xql.api.common.wechat.CommonUtil.httpsRequest(WeChatConfig.UNIFIEDORDER_URL, "POST", tosend);
logger.info("微信統一下單返回資料xml:" + result);
Map<String, String> map = null;
JSONObject jsonObject = new JSONObject();
SortedMap<String, Object> signParam = new TreeMap<String, Object>();
map = com.hisap.xql.api.common.wechat.CommonUtil.doXMLParse(result);
String return_code = map.get("return_code");
String prepay_id = null;
if (return_code.equalsIgnoreCase("SUCCESS")) {
String result_code = map.get("result_code");
if(result_code.equalsIgnoreCase("SUCCESS")){
prepay_id = map.get("prepay_id");//獲取到prepay_id
signParam.put("appid", WeChatConfig.APP_ID);
signParam.put("partnerid", WeChatConfig.MCH_ID);
signParam.put("prepayid", prepay_id);
signParam.put("package", "Sign=WXPay");
signParam.put("noncestr", com.hisap.xql.api.common.wechat.CommonUtil.getRandomString(32));//自定義不重複的長度不長於32位
signParam.put("timestamp", DateUtil.getSecondTimestamp(new Date()).toString());//此處長度必須為10位
String signAgain = com.hisap.xql.api.common.wechat.CommonUtil.createSign("UTF-8", signParam);//再次生成簽名
signParam.put("sign", signAgain);
responseJson = CommonUtil.createResponseJson(
CodeMsg.SUCCESS_CODE, CodeMsg.SUCCESS_MSG,
signParam);
}else{
responseJson = CommonUtil.createResponseJson(
map.get("err_code"), map.get("err_code_des"),
null);
}
}else{
responseJson = CommonUtil.createResponseJson(
map.get("return_code"), map.get("return_msg"),
null);
}
} catch (Exception e) {
e.printStackTrace();
logger.error("微信統一下單介面服務端異常,異常資訊---" + e.getMessage(), e);
responseJson = CommonUtil.createResponseJson(
CodeMsg.SERVER_ERROR_CODE, CodeMsg.SERVER_ERROR_MSG,
null);
}
return responseJson;
}
}
呼叫之後,返回給APP的內容如下:
{
"code": "200",
"message": "success",
"data": {
"time": "1534908545",
"response": {
"appid": "xxxxxx",
"noncestr": "lKbA8N9J72Swn3XY3JEMVBZLFhWAHaAU",
"package": "Sign=WXPay",
"partnerid": "xxxxxx",
"prepayid": "wx22112827286690ddf3b03c1a3649843158",
"sign": "FEF21A3A65540ECB1F18DBF58DE57F68",
"timestamp": "1534908527"
}
}
}
這裡返回給app二次加簽的時候,timestamp必須為string型別,且長度為10位,不然app支付的時候會報驗籤失敗錯誤。微信支付的統一下單就講到這裡,下一章講述微信支付結果通知介面開發。