微信APP支付（IOS手机端+java后台）版

<!-- 微信支付依赖 --><dependency> <groupId>org.xmlpull</groupId> <artifactId>xmlpull</artifactId> <version>1.1.3.1 </version></dependency><dependency> <groupId>net.sf.json-lib</groupId> <artifactId>json-lib</artifactId> <version>2.3</version> <classifier>jdk15</classifier></dependency><!-- https://mvnrepository.com/artifact/com.thoughtworks.xstream/xstream --><dependency> <groupId>com.thoughtworks.xstream</groupId> <artifactId>xstream</artifactId> <version>1.4.5</version></dependency><!-- https://mvnrepository.com/artifact/com.ning/async-http-client --><dependency> <groupId>com.ning</groupId> <artifactId>async-http-client</artifactId> <version>1.8.13</version></dependency>

@RequestMapping(value="/pay/wxpay/params",produces="application/json;charset=utf-8") @ResponseBody public String signprams(HttpServletRequest request){  String res = "{code:404}";  try{  // 充值金额   String account = request.getParameter("account");  // 用户id   String sid = request.getParameter("sid");   String subject = "订单标题";   String body = "订单描述";    int acc = (int) (Double.valueOf(account) * 100);   String appid = "您的APPID";   String out_trade_no = "生成您的订单号";  // 生成订单数据   SortedMap<String, String> payMap = genOrderData(request, subject, body, acc, appid, out_trade_no);    savePayLog(out_trade_no,account,sid,body,payMap.get("paySign"),nid,2);    // 4.返回数据   res = buildPayRes(payMap,out_trade_no);  }catch (Exception e){   e.printStackTrace();   res = "{code:500}";  }  return res; }  private SortedMap<String, String> genOrderData(HttpServletRequest request, String subject, String body,          int acc, String appid, String out_trade_no)   throws IOException, ExecutionException, InterruptedException, XmlPullParserException {  SortedMap<String, String> paraMap = new TreeMap<String, String>();  paraMap.put("appid", appid);  paraMap.put("attach", subject);  paraMap.put("body", body);  paraMap.put("mch_id", "您的商户id，到商户平台查看");  paraMap.put("nonce_str", create_nonce_str());  paraMap.put("notify_url", "http://pay.xxxxx.com/pay/wxpay/notify.htm ");// 此路径是微信服务器调用支付结果通知路径  paraMap.put("out_trade_no", out_trade_no);  paraMap.put("spbill_create_ip", request.getRemoteAddr());  paraMap.put("total_fee", acc+"");  paraMap.put("trade_type", "APP");  String sign = createSign(paraMap);  paraMap.put("sign", sign);  // 统一下单 https://api.mch.weixin.qq.com/pay/unifiedorder   String url = "https://api.mch.weixin.qq.com/pay/unifiedorder";  String xml = getRequestXml(paraMap);  String xmlStr = HttpKit.post(url, xml);   // 预付商品id  String prepay_id = "";  if (xmlStr.indexOf("SUCCESS") != -1) {   Map<String, String> map = WXRequestUtil.doXMLParse(xmlStr);   prepay_id = (String) map.get("prepay_id");  }   SortedMap<String, String> payMap = new TreeMap<String, String>();  payMap.put("appid", appid);  payMap.put("partnerid", "您的商户id，到商户平台查看");  payMap.put("prepayid", prepay_id);  payMap.put("package", "Sign=WXPay");  payMap.put("noncestr", create_nonce_str());  payMap.put("timestamp", WXRequestUtil.create_timestamp());  String paySign = createSign(payMap);  payMap.put("paySign", paySign);  return payMap; }  //请求xml组装  public static String getRequestXml(SortedMap<String,String> parameters){   String sign = "";   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 = (String)entry.getValue(); //    if ("attach".equalsIgnoreCase(key)||"body".equalsIgnoreCase(key)||"sign".equalsIgnoreCase(key)) { //     sb.append("<"+key+">"+value+"</"+key+">"); //    }    if ("sign".equalsIgnoreCase(key)){    sign = "<"+key+">"+value+"</"+key+">";    }else {      sb.append("<"+key+">"+value+"</"+key+">");     }    }    sb.append(sign);    sb.append("</xml>");    return sb.toString();   }   //生成签名  public String createSign(SortedMap<String,String> 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=" + WXConfig.APP_PERTNER_KEY);    System.out.println(sb.toString());   String sign = MD5Utils.MD5Encode(sb.toString(),"UTF-8").toUpperCase();    return sign;   }    public String create_nonce_str() { String chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; String res = ""; for (int i = 0; i < 32; i++) { Random rd = new Random(); res += chars.charAt(rd.nextInt(chars.length() - 1)); } return res; }

#import "AppDelegate.h"#import "XSTabBarViewController.h"#import <AlipaySDK/AlipaySDK.h>#import "WXApi.h" @interface AppDelegate ()<WXApiDelegate> @end @implementation AppDelegate  - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after application launch. // [NSThread sleepForTimeInterval:2.0];  // 进入主控制器 self.window = [[UIWindow alloc] init]; self.window.frame = [UIScreen mainScreen].bounds; self.window.rootViewController = [[XSTabBarViewController alloc] init];  [self.window makeKeyAndVisible];  //向微信注册应用。 [WXApi registerApp:@"wxfb96c2a9b531be26"];  return YES;} -(void) onResp:(BaseResp*)resp{//  NSLog(@" ----onResp %@",resp); /*  ErrCode ERR_OK = 0(用户同意)  ERR_AUTH_DENIED = -4（用户拒绝授权）  ERR_USER_CANCEL = -2（用户取消）  code 用户换取access_token的code，仅在ErrCode为0时有效  state 第三方程序发送时用来标识其请求的唯一性的标志，由第三方程序调用sendReq时传入，由微信终端回传，state字符串长度不能超过1K  lang 微信客户端当前语言  country 微信用户当前国家信息  */ if ([resp isKindOfClass:[SendAuthResp class]]) //判断是否为授权请求，否则与微信支付等功能发生冲突 {  SendAuthResp *aresp = (SendAuthResp *)resp;  if (aresp.errCode== 0)  {   //   NSLog(@"code %@",aresp.code);   [[NSNotificationCenter defaultCenter] postNotificationName:@"wechatDidLoginNotification" object:self userInfo:@{@"code":aresp.code}];  } }else{ // 支付请求回调  //支付返回结果，实际支付结果需要去微信服务器端查询  NSString *strMsg = [NSString stringWithFormat:@"支付结果"];  NSString *respcode = @"0";  switch (resp.errCode) {   case WXSuccess:    strMsg = @"支付结果：成功！";    //    NSLog(@"支付成功－PaySuccess，retcode = %d", resp.errCode);    respcode = @"1";    break;   default:    strMsg = [NSString stringWithFormat:@"支付结果：失败！retcode = %d, retstr = %@", resp.errCode,resp.errStr];    //    NSLog(@"错误，retcode = %d, retstr = %@", resp.errCode,resp.errStr);    respcode = @"0";    break;  }  [[NSNotificationCenter defaultCenter] postNotificationName:@"wechatDidPayNotification" object:self userInfo:@{@"respcode":respcode}]; }}  //iOS 9.0 之前的处理方法不保证正确,如有错误还望指正- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation{ NSLog(@"iOS 9.0 之前"); return [self applicationOpenURL:url];} -(BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<UIApplicationOpenURLOptionsKey,id> *)options { NSLog(@"iOS 9.0 之后"); return [self applicationOpenURL:url];} - (BOOL)applicationOpenURL:(NSURL *)url{ if([[url absoluteString] rangeOfString:@"wxfb96c2a9b531be26://pay"].location == 0){  return [WXApi handleOpenURL:url delegate:self]; } if ([url.host isEqualToString:@"safepay"]) {  [[AlipaySDK defaultService] processOrderWithPaymentResult:url standbyCallback:nil];  return YES; } return YES;} }

- (void)viewDidLoad { [super viewDidLoad];  // 接受微信支付通知 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(wechatDidPayNotification:) name:@"wechatDidPayNotification" object:nil];}

-(void)weixinPay{ NSString *userUrlStr = [NSString stringWithFormat:@"%@?sid=%@&account=%@&desc=%@", WX_PREPAY_URL, self.student.sid,self.payJinE,self.student.nid]; NSURL *url = [NSURL URLWithString:userUrlStr];//  NSLog(@"userUrlStr = %@", userUrlStr);  NSURLRequest *request = [NSURLRequest requestWithURL:url]; AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc]initWithRequest:request];  [MBProgressHUD showMessage:@"跳转中，请稍候"]; [operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, NSDictionary *responseObject) {  [MBProgressHUD hideHUD];  //   NSLog(@"微信支付的response = %@", operation.responseString);  NSData *JSONData = [operation.responseString dataUsingEncoding:NSUTF8StringEncoding];  NSDictionary *userDict = [NSJSONSerialization JSONObjectWithData:JSONData options:NSJSONReadingMutableLeaves error:nil];    // 调用微信支付  PayReq *request = [[PayReq alloc] init];  /** 商家向财付通申请的商家id */  request.partnerId = [userDict objectForKey:@"partnerid"];  /** 预支付订单 */  request.prepayId= [userDict objectForKey:@"prepayid"];  /** 商家根据财付通文档填写的数据和签名 */  request.package = [userDict objectForKey:@"package"];  /** 随机串，防重发 */  request.nonceStr= [userDict objectForKey:@"noncestr"];  /** 时间戳，防重发 */  request.timeStamp= [[userDict objectForKey:@"timestamp"] intValue];  /** 商家根据微信开放平台文档对数据做的签名 */  request.sign= [userDict objectForKey:@"sign"];  self.sign = request.sign;  self.ordnum = [userDict objectForKey:@"ordnum"];     [WXApi sendReq: request]; }failure:^(AFHTTPRequestOperation *operation, NSError *error) {  [MBProgressHUD hideHUD];  NSLog(@"发生错误！%@",error); }]; NSOperationQueue *queue = [[NSOperationQueue alloc] init]; [queue addOperation:operation]; }// 微信支付结果-(void)wechatDidPayNotification:(NSNotification *)notification{// NSLog(@"wechatDidPayNotification"); NSDictionary *nameDictionary = [notification userInfo]; NSString *respcode = [nameDictionary objectForKey:@"respcode"]; if([respcode isEqualToString:@"1"]){  // 支付成功，更新用户信息  [self payDidFinish]; }else{  // 支付失败，  [self setupAlertControllerWithTitle:@"微信支付结果" messge:@"本次支付未完成，您可以稍后重试！" confirm:@"好的"]; }}