java實現支付充值的通用流程

時間 2019-11-12

標籤 java 實現支付充值通用流程欄目 Java 简体版

原文原文鏈接

/*支付流程*/html

/****Controller.java 代碼以下：*/java

@RequestMapping(value = "/paySubmit.htm", method = RequestMethod.POST)
public ModelAndView paySubmit(HttpServletRequest request,
       HttpServletResponse response, @RequestParam Map<String, Object> maps){
       ModelAndView model = new ModelAndView("***/submit");
       /**
       * 代碼塊
       */
       return model;
}算法

/*submit.jsp 代碼以下：*/數組

<%@ page contentType="text/html;charset=UTF-8" language="java" trimDirectiveWhitespaces="true" %>
<%@ page import="com.***.util.PayUtil" %>session

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>支付</title>
   <meta http-equiv="pragma" content="no-cache">
   <meta http-equiv="cache-control" content="no-cache">
   <meta http-equiv="expires" content="0">
</head>

<body>app

<%
request.setCharacterEncoding("UTF-8");
String type = (String) request.getAttribute("type");
String sHtmlText = "";
if ("1".equals(type)){
   sHtmlText = PayUtil.buildForm(
   (String) request.getAttribute("orderNo"),
   (String) request.getAttribute("amt"),type);
}else{
   sHtmlText = PayUtil.allInPaybuildForm(
   (String) request.getAttribute("orderNo"),
   (String) request.getAttribute("amt"),type,request);
}
out.println(sHtmlText);
%>jsp

</body>post

</html>網站

/* PayUtil.java 代碼以下：*/ui

/**
* 生成頁面數據
* @param url 三方支付的URL
* @param sPara
* @param strMethod
* @return
*/
public static String buildRequest(String url, Map<String, String> sPara, String strMethod) {
   ArrayList keys = new ArrayList(sPara.keySet());
   StringBuffer sbHtml = new StringBuffer();
   sbHtml.append("<form id=\"paySubForm\" name=\"paySubForm\" action=\"" + url + "\" method=\"" + strMethod + "\">");

   for(int i = 0; i < keys.size(); ++i) {
       String name = (String)keys.get(i);
       String value = (String)sPara.get(name);
       sbHtml.append("<input type=\"hidden\" name=\"" + name + "\" value=\"" + value + "\"/>");
   }

   sbHtml.append("<input type=\"submit\" name=\"b1\" value=\"確認\" style=\"display:none;\"></form>");
   sbHtml.append("<script>document.forms[\'paySubForm\'].submit();</script>");
   return sbHtml.toString();
}

/**
* 以民生支付爲例
* @param orderNo
* @param amt
* @param type
* @return
*/
public static String buildForm(String orderNo, String amt,String type) {

   //商戶編號
   String merchantid = PropertiesRead.use_classLoador().getProperty("CMBC.pay.id");
   //訂單編號商戶的交易定單號,由商戶網站生成,最大長度30
   String merorderid = orderNo;
   //金額
   String amountsum = amt;
   //商品種類
   String subject = PropertiesRead.use_classLoador().getProperty("CMBC.pay.type");//"empty";
   //幣種 01 爲cny
   String currencytype = "01";
   //自動調轉取貨頁面0→不跳轉；1→跳轉
   String autojump = "1";
   //跳轉等待時間
   String waittime   = "0";

   //商戶取貨URL
   String merurl = PropertiesRead.use_classLoador().getProperty("CMBC.pay.return.page.url");
   //是否通知商戶: 0→不通知；1→通知
   String informmer = "1";
   //商戶通知URL
   String informurl = PropertiesRead.use_classLoador().getProperty("CMBC.pay.return.notify.url");

   /**
   * 商戶返回確認:   0→不返回；1→返回
   */
   String confirm = "1";

   //支付銀行
   String merbank = "empty";
   //支付類型 0→即時到帳；1→擔保交易
   String tradetype = "0";

   //是否在商戶端選擇銀行:0→其餘；1→在商戶端選擇銀行
   String bankInput = "0";
   //接口版本
   String strInterface = "5.00";

   //備注 (可選) 支付備註信息,最大長度50
   String remark = "充值";
   //支付銀行卡類型 00→借貸混合；01→純借記
   String bankcardtype = "00";

   //商品描述
   String pdtdnm = "虛擬商品";
   //商品描述地址
   String pdtdetailurl = PropertiesRead.use_classLoador().getProperty("CMBC.pay.return.detail.url");
   //支付密鑰(必填): 需在支付平臺進行設置,可登陸商戶管理系統進行維護,用於上送商戶支付及下傳支付結果加密
   String MD5key = PropertiesRead.use_classLoador().getProperty("CMBC.pay.pwd");

//拼接加密的源字符串
String mac_src="merchantid="+merchantid+"&merorderid="+merorderid
               +"&amountsum="+amountsum+"&subject="+subject
               +"&currencytype="+currencytype+"&autojump="+autojump
               + "&waittime=" + waittime +"&merurl="+merurl
               + "&informmer=" + informmer +"&informurl=" +informurl
               + "&confirm=" + confirm + "&merbank=" + merbank
               + "&tradetype=" + tradetype + "&bankInput=" + bankInput
               + "&interface=" + strInterface + "&bankcardtype=" + bankcardtype
               + "&pdtdetailurl=" + pdtdetailurl + "&merkey="+MD5key;

   String mac = Crypto.GetMessageDigest(mac_src);

   // 把請求參數打包成map
   Map<String, String> sParaTemp = new HashMap<String,String>();
   sParaTemp.put("merchantid", merchantid);
   sParaTemp.put("merorderid", merorderid);
   sParaTemp.put("amountsum", amountsum);
   sParaTemp.put("subject", subject);
   sParaTemp.put("currencytype", currencytype);
   sParaTemp.put("autojump", autojump);
   sParaTemp.put("waittime", waittime);
   sParaTemp.put("merurl", merurl);
   sParaTemp.put("informmer", informmer);
   sParaTemp.put("informurl", informurl);
   sParaTemp.put("confirm", confirm);
   sParaTemp.put("merbank", merbank);
   sParaTemp.put("tradetype", tradetype);
   sParaTemp.put("bankInput", bankInput);
   sParaTemp.put("interface", strInterface);
   sParaTemp.put("remark", remark);
   sParaTemp.put("bankcardtype", bankcardtype);
   sParaTemp.put("pdtdnm", pdtdnm);
   sParaTemp.put("pdtdetailurl", pdtdetailurl);
   sParaTemp.put("mac", mac);

//創建請求
String sHtmlText = buildRequest(PropertiesRead.use_classLoador().getProperty("CMBC.pay.url"), sParaTemp, "post");

logger.info("McPay request: {}", sHtmlText);

return sHtmlText;
}

/" Crypto.java 代碼以下 "/
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/**
* <p>Title: MD5加密算法</p>
* <p>Description: 商戶不須要進行修改</p>
* <p>******科技發展公司 2009. All rights reserved.</p>
*/
public class Crypto {

   /**
   * 功能：MD5加密
   * @param strSrc 加密的源字符串
   * @return 加密串長度32位
   */
   public static String GetMessageDigest(String strSrc) {
       MessageDigest md = null;
       String strDes = null;
       final String ALGO_MD5 = "MD5";

       byte[] bt = strSrc.getBytes();
       try {
           md = MessageDigest.getInstance(ALGO_MD5);
           md.update(bt);
           strDes = bytes2Hex(md.digest());
       } catch (NoSuchAlgorithmException e) {
           throw new IllegalStateException(
               "系統不支持的MD5算法！");
       }
       return strDes;
   }

   /**
   * 將字節數組轉爲HEX字符串(16進制串)
   * @param bts 要轉換的字節數組
   * @return 轉換後的HEX串
   */
   public static String bytes2Hex(byte[] bts) {
       String des = "";
       String tmp = null;
       for (int i = 0; i < bts.length; i++) {
           tmp = (Integer.toHexString(bts[i] & 0xFF));
           if (tmp.length() == 1) {
               des += "0";
           }
           des += tmp;
       }
       return des;
   }

}

/** * 支付返回調用url(返回頁面) * @param session * @param request * @return */ @RequestMapping(value = "/allPayReturn.htm", method = RequestMethod.POST) public ModelAndView allInPayReturnCall(HttpServletRequest request, HttpServletResponse response, @RequestParam Map<String, Object> maps){ ModelAndView model = new ModelAndView("***/payReturn"); /** * 代碼塊 */ return model; }