java实现微信支付（服务端）

RequestHandler requestHandler = new RequestHandler(super.getRequest(),super.getResponse());
 
//获取token //两小时内有效，两小时后重新获取
 
Token = requestHandler.GetToken();
 
//更新token 到应用中
 
requestHandler.getTokenReal();
 
System.out.println("微信支付获取token=======================:" +Token);
 
//requestHandler 初始化
 
requestHandler.init();
 
requestHandler.init(appid,appsecret, appkey,partnerkey, key);

// 设置package订单参数 
 
  SortedMap<String, String> packageParams = new TreeMap<String, String>(); 
 
  packageParams.put("bank_type", "WX"); // 支付类型 
 
  packageParams.put("body", "xxxx"); // 商品描述 
 
  packageParams.put("fee_type", "1"); // 银行币种 
 
  packageParams.put("input_charset", "UTF-8"); // 字符集 
 
  packageParams.put("notify_url", "http://xxxx.com/xxxx/wxcallback"); // 通知地址 这里的通知地址使用外网地址测试，注意80端口是否打开。
 
  packageParams.put("out_trade_no", no); // 商户订单号 
 
  packageParams.put("partner", partenerid); // 设置商户号 
 
  packageParams.put("spbill_create_ip", super.getRequest().getRemoteHost()); // 订单生成的机器IP，指用户浏览器端IP 
 
  packageParams.put("total_fee", String.valueOf(rstotal)); // 商品总金额,以分为单位 
 
 
 
// 设置支付参数 
 
  SortedMap<String, String> signParams = new TreeMap<String, String>(); 
 
  signParams.put("appid", appid); 
 
  signParams.put("noncestr", noncestr); 
 
  signParams.put("traceid", PropertiesUtils.getOrderNO()); 
 
  signParams.put("timestamp", timestamp); 
 
  signParams.put("package", packageValue); 
 
  signParams.put("appkey", this.appkey);
 
 
 
  // 生成支付签名，要采用URLENCODER的原始值进行SHA1算法！ 
 
  String sign ="";
 
    try {
 
    sign = Sha1Util.createSHA1Sign(signParams);
 
    } catch (Exception e) {
 
    e.printStackTrace();
 
    }   
 
  // 增加非参与签名的额外参数 
 
  signParams.put("sign_method", "sha1"); 
 
  signParams.put("app_signature", sign);   
 
  // api支付拼包结束------------------------------------ 
 
  //获取prepayid
 
  String prepayid = requestHandler.sendPrepay(signParams);
 
  System.out.println("prepayid :" + prepayid);

 //生成预付快订单完成，返回给android,ios 掉起微信所需要的参数。
 
  SortedMap<String, String> payParams = new TreeMap<String, String>(); 
 
  payParams.put("appid", appid);
 
  payParams.put("noncestr", noncestr);
 
  payParams.put("package", "Sign=WXPay");
 
  payParams.put("partnerid", partenerid);
 
  payParams.put("prepayid", prepayid);
 
  payParams.put("appkey", this.appkey);
 
  //这里除1000 是因为参数长度限制。
 
  int time = (int) (System.currentTimeMillis() / 1000);
 
  payParams.put("timestamp",String.valueOf(time));
 
  
 
  System.out.println("timestamp:" + time);
 
  
 
  //签名
 
  String paysign ="";
 
  try {
 
        paysign = Sha1Util.createSHA1Sign(payParams);
 
  } catch (Exception e) {
 
    e.printStackTrace();
 
  }
 
  payParams.put("sign", paysign);
 
  
 
 //拼json 数据返回给客户端
 
  BasicDBObject backObject = new BasicDBObject();
 
  backObject.put("appid", appid);
 
  backObject.put("noncestr", payParams.get("noncestr"));
 
  backObject.put("package", "Sign=WXPay");
 
  backObject.put("partnerid", payParams.get("partnerid"));
 
  backObject.put("prepayid", payParams.get("prepayid"));
 
  backObject.put("appkey", this.appkey);
 
  backObject.put("timestamp",payParams.get("timestamp"));
 
  backObject.put("sign",payParams.get("sign")); 
   
  String backstr = dataObject.toString();
 
  System.out.println("backstr:" + backstr);
 
  return backstr;

 ResponseHandler resHandler = new ResponseHandler(request, response);
 
  resHandler.setKey(partnerkey);
 
  //创建请求对象
 
  //RequestHandler queryReq = new RequestHandler(request, response);
 
  //queryReq.init();
 
  if (resHandler.isTenpaySign() == true) {
 
      //商户订单号
 
      String out_trade_no = resHandler.getParameter("out_trade_no");
 
      System.out.println("out_trade_no:" + out_trade_no);
 
      //财付通订单号
 
      String transaction_id = resHandler.getParameter("transaction_id");
 
      System.out.println("transaction_id:" + transaction_id);
 
      //金额,以分为单位
 
      String total_fee = resHandler.getParameter("total_fee");
 
      //如果有使用折扣券，discount有值，total_fee+discount=原请求的total_fee
 
      String discount = resHandler.getParameter("discount");
 
      //支付结果
 
      String trade_state = resHandler.getParameter("trade_state");
 
  
 
      //判断签名及结果
 
      if ("0".equals(trade_state)) {
 
        //------------------------------
 
        //即时到账处理业务开始
 
        //------------------------------
 
       
 
        System.out.println("----------------业务逻辑执行-----------------");
 
      
 
        //――请根据您的业务逻辑来编写程序（以上代码仅作参考）――
 
        System.out.println("----------------业务逻辑执行完毕-----------------");
 
        System.out.println("success"); // 请不要修改或删除
 
       
 
        System.out.println("即时到账支付成功");
 
        //给财付通系统发送成功信息，财付通系统收到此结果后不再进行后续通知
 
        resHandler.sendToCFT("success");
 
   
 
       //给微信服务器返回success 否则30分钟通知8次
 
       return "success";
 
     }else{      
 
      System.out.println("通知签名验证失败");
 
      resHandler.sendToCFT("fail");
 
      response.setCharacterEncoding("utf-8");
 
    }
 
   }else {
 
      System.out.println("fail -Md5 failed"); 
 
  }