网上支付心案例payment

 案例的作用及用法参考该类的说明注释  工具类分别有：  package cn.itcast.utils;    import java.util.Properties;  /**  * 读取配置文件  *  */  public class ConfigInfo {      private static Properties cache = new Properties();      static{          try {              cache.load(ConfigInfo.class.getClassLoader().getResourceAsStream("merchantInfo.properties"));          } catch (Exception e) {              e.printStackTrace();          }      }      /**      * 获取指定key的值      * @param key      * @return      */      public static String getValue(String key){          return cache.getProperty(key);      }  }    package cn.itcast.utils;    import java.io.UnsupportedEncodingException;  import java.security.MessageDigest;  import java.security.NoSuchAlgorithmException;  import java.util.Arrays;      /**  * md5-hmac算法加密类  */  public class DigestUtil {        private static String encodingCharset = "UTF-8";        public static String hmacSign(String aValue, String aKey) {          byte k_ipad[] = new byte[64];          byte k_opad[] = new byte[64];          byte keyb[];          byte value[];          try {              keyb = aKey.getBytes(encodingCharset);              value = aValue.getBytes(encodingCharset);          } catch (UnsupportedEncodingException e) {              keyb = aKey.getBytes();              value = aValue.getBytes();          }            Arrays.fill(k_ipad, keyb.length, 64, (byte) 54);          Arrays.fill(k_opad, keyb.length, 64, (byte) 92);          for (int i = 0; i < keyb.length; i++) {              k_ipad[i] = (byte) (keyb[i] ^ 0x36);              k_opad[i] = (byte) (keyb[i] ^ 0x5c);          }            MessageDigest md = null;          try {              md = MessageDigest.getInstance("MD5");          } catch (NoSuchAlgorithmException e) {                return null;          }          md.update(k_ipad);          md.update(value);          byte dg[] = md.digest();          md.reset();          md.update(k_opad);          md.update(dg, 0, 16);          dg = md.digest();          return toHex(dg);      }        public static String toHex(byte input[]) {          if (input == null)              return null;          StringBuffer output = new StringBuffer(input.length * 2);          for (int i = 0; i < input.length; i++) {              int current = input[i] & 0xff;              if (current < 16)                  output.append("0");              output.append(Integer.toString(current, 16));          }            return output.toString();      }        /**      *       * @param args      * @param key      * @return      */      public static String getHmac(String[] args, String key) {          if (args == null || args.length == 0) {              return (null);          }          StringBuffer str = new StringBuffer();          for (int i = 0; i < args.length; i++) {              str.append(args[i]);          }          return (hmacSign(str.toString(), key));      }        /**      * @param aValue      * @return      */      public static String digest(String aValue) {          aValue = aValue.trim();          byte value[];          try {              value = aValue.getBytes(encodingCharset);          } catch (UnsupportedEncodingException e) {              value = aValue.getBytes();          }          MessageDigest md = null;          try {              md = MessageDigest.getInstance("SHA");          } catch (NoSuchAlgorithmException e) {              e.printStackTrace();              return null;          }          return toHex(md.digest(value));        }        }      package cn.itcast.utils;    public class PanymentUtil {      /**      * 生成hmac方法      *       * @param p0_Cmd 业务类型      * @param p1_MerId 商户编号      * @param p2_Order 商户订单号      * @param p3_Amt 支付金额      * @param p4_Cur 交易币种      * @param p5_Pid 商品名称      * @param p6_Pcat 商品种类      * @param p7_Pdesc 商品描述      * @param p8_Url 商户接收支付成功数据的地址      * @param p9_SAF 送货地址      * @param pa_MP 商户扩展信息      * @param pd_FrpId 银行编码      * @param pr_NeedResponse 应答机制      * @param keyValue 商户密钥      * @return      */      public static String buildHmac(String p0_Cmd,String p1_MerId,              String p2_Order, String p3_Amt, String p4_Cur,String p5_Pid, String p6_Pcat,              String p7_Pdesc,String p8_Url, String p9_SAF,String pa_MP,String pd_FrpId,              String pr_NeedResponse,String keyValue) {          StringBuffer sValue = new StringBuffer();          // 业务类型          sValue.append(p0_Cmd);          // 商户编号          sValue.append(p1_MerId);          // 商户订单号          sValue.append(p2_Order);          // 支付金额          sValue.append(p3_Amt);          // 交易币种          sValue.append(p4_Cur);          // 商品名称          sValue.append(p5_Pid);          // 商品种类          sValue.append(p6_Pcat);          // 商品描述          sValue.append(p7_Pdesc);          // 商户接收支付成功数据的地址          sValue.append(p8_Url);          // 送货地址          sValue.append(p9_SAF);          // 商户扩展信息          sValue.append(pa_MP);          // 银行编码          sValue.append(pd_FrpId);          // 应答机制          sValue.append(pr_NeedResponse);                    String sNewString = DigestUtil.hmacSign(sValue.toString(), keyValue);          return sNewString;      }            /**      * 返回校验hmac方法      *       * @param hmac 支付网关发来的加密验证码      * @param p1_MerId 商户编号      * @param r0_Cmd 业务类型      * @param r1_Code 支付结果      * @param r2_TrxId 易宝支付交易流水号      * @param r3_Amt 支付金额      * @param r4_Cur 交易币种      * @param r5_Pid 商品名称      * @param r6_Order 商户订单号      * @param r7_Uid 易宝支付会员ID      * @param r8_MP 商户扩展信息      * @param r9_BType 交易结果返回类型      * @param keyValue 密钥      * @return      */      public static boolean verifyCallback(String hmac, String p1_MerId,              String r0_Cmd, String r1_Code, String r2_TrxId, String r3_Amt,              String r4_Cur, String r5_Pid, String r6_Order, String r7_Uid,              String r8_MP, String r9_BType, String keyValue) {          StringBuffer sValue = new StringBuffer();          // 商户编号          sValue.append(p1_MerId);          // 业务类型          sValue.append(r0_Cmd);          // 支付结果          sValue.append(r1_Code);          // 易宝支付交易流水号          sValue.append(r2_TrxId);          // 支付金额          sValue.append(r3_Amt);          // 交易币种          sValue.append(r4_Cur);          // 商品名称          sValue.append(r5_Pid);          // 商户订单号          sValue.append(r6_Order);          // 易宝支付会员ID          sValue.append(r7_Uid);          // 商户扩展信息          sValue.append(r8_MP);          // 交易结果返回类型          sValue.append(r9_BType);          String sNewString = DigestUtil.hmacSign(sValue.toString(), keyValue);            if (hmac.equals(sNewString)) {              return true;          }          return false;      }  }      Servlet相关的类  package cn.itcast.servlet;    import java.io.IOException;  import javax.servlet.ServletException;  import javax.servlet.http.HttpServlet;  import javax.servlet.http.HttpServletRequest;  import javax.servlet.http.HttpServletResponse;    import cn.itcast.utils.ConfigInfo;  import cn.itcast.utils.PanymentUtil;  /**  * 发起支付请求  * @author 传智播客  *  */  public class PaymentRequest extends HttpServlet {        public void doGet(HttpServletRequest request, HttpServletResponse response)              throws ServletException, IOException {          this.doPost(request, response);      }        public void doPost(HttpServletRequest request, HttpServletResponse response)              throws ServletException, IOException {          request.setCharacterEncoding("GBK");          String orderid = request.getParameter("orderid");//订单号          String amount = request.getParameter("amount");//支付金额          String pd_FrpId = request.getParameter("pd_FrpId");//选择的支付银行          String p1_MerId = ConfigInfo.getValue("p1_MerId");          String keyValue = ConfigInfo.getValue("keyValue");          String merchantCallbackURL = ConfigInfo.getValue("merchantCallbackURL");                  String messageType = "Buy"; // 请求命令,在线支付固定为Buy          String currency = "CNY"; // 货币单位          String productDesc = ""; // 商品描述          String productCat = ""; // 商品种类          String productId = ""; // 商品ID          String addressFlag = "0"; // 需要填写送货信息 0：不需要 1:需要                  String sMctProperties = ""; // 商家扩展信息          String pr_NeedResponse = "0"; // 应答机制          String md5hmac = PanymentUtil.buildHmac(messageType, p1_MerId, orderid, amount, currency,                  productId, productCat, productDesc, merchantCallbackURL, addressFlag, sMctProperties,                   pd_FrpId, pr_NeedResponse, keyValue);                    request.setAttribute("messageType", messageType);          request.setAttribute("merchantID", p1_MerId);          request.setAttribute("orderId", orderid);          request.setAttribute("amount", amount);          request.setAttribute("currency", currency);          request.setAttribute("productId", productId);          request.setAttribute("productCat", productCat);          request.setAttribute("productDesc", productDesc);          request.setAttribute("merchantCallbackURL", merchantCallbackURL);          request.setAttribute("addressFlag", addressFlag);          request.setAttribute("sMctProperties", sMctProperties);          request.setAttribute("frpId", pd_FrpId);          request.setAttribute("pr_NeedResponse", pr_NeedResponse);          request.setAttribute("hmac", md5hmac);                    request.getRequestDispatcher("/WEB-INF/page/connection.jsp").forward(request, response);      }    }      package cn.itcast.servlet;    import java.io.IOException;    import javax.servlet.ServletException;  import javax.servlet.http.HttpServlet;  import javax.servlet.http.HttpServletRequest;  import javax.servlet.http.HttpServletResponse;    import cn.itcast.utils.ConfigInfo;  import cn.itcast.utils.PanymentUtil;  /**  * 响应银行支付结果请求  * @author 传智播客  *  */  public class PaymentResutlResponse extends HttpServlet {        public void doGet(HttpServletRequest request, HttpServletResponse response)              throws ServletException, IOException {          this.doPost(request, response);      }        public void doPost(HttpServletRequest request, HttpServletResponse response)              throws ServletException, IOException {          request.setCharacterEncoding("GBK");          String merchantID = ConfigInfo.getValue("p1_MerId"); // 商家ID          String keyValue = ConfigInfo.getValue("keyValue"); // 商家密钥                    String sCmd = request.getParameter("r0_Cmd"); //业务类型          String sResultCode = request.getParameter("r1_Code"); //扣款结果,该字段值为1时表示扣款成功.          String sTrxId = request.getParameter("r2_TrxId"); //YeePay易宝交易订单号          String amount = request.getParameter("r3_Amt");//扣款金额,交易结束后,YeePay易宝交易系统将实际扣款金额返回给商户          String currency = request.getParameter("r4_Cur");//交易币种,人民币为CNY          String productId = request.getParameter("r5_Pid");//商品ID          String orderId = request.getParameter("r6_Order");//商户订单号          String userId = request.getParameter("r7_Uid");//YeePay易宝会员ID          String mp  = request.getParameter("r8_MP");//商户扩展信息,可以任意填写1K 的字符串,交易返回时将原样返回          String bType = request.getParameter("r9_BType");//交易结果通知类型,1: 交易成功回调(浏览器重定向)2: 交易成功主动通知(服务器点对点通讯)          String rb_BankId  = request.getParameter("rb_BankId");//支付银行          String rp_PayDate = request.getParameter("rp_PayDate");//在银行支付时的时间          String hmac = request.getParameter("hmac");//MD5交易签名                    boolean result = PanymentUtil.verifyCallback(hmac, merchantID, sCmd, sResultCode, sTrxId, amount,                  currency, productId, orderId, userId, mp, bType, keyValue);          if(result){              if("1".equals(sResultCode)){                  //你们这个地方应该把数据库中订单的支付状态设置成已经支付.                  String message = "订单号为:"+ orderId+ "的订单支付成功了";                  message += ",用户支付了"+ amount +"元";                  message +=",交易结果通知类型:";                  if("1".equals(bType)){                       message += "浏览器重定向";                  }else if("2".equals(bType)){                       message += "易宝支付网关后台程序通知";                  }                  message += ",易宝订单系统中的订单号为:"+ sTrxId;                  request.setAttribute("message", message);              }else{                  request.setAttribute("message", "用户支付失败");              }          }else{              request.setAttribute("message", "数据来源不合法");          }          request.getRequestDispatcher("/WEB-INF/page/paymentResult.jsp").forward(request, response);      }    }    显示界面jsp  <%@ page language="java" import="java.util.*" pageEncoding="GBK"%>  <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">  <html>    <head>          <title>巴巴运动网_支付第一步,选择支付银行</title>      <meta http-equiv="pragma" content="no-cache">      <meta http-equiv="cache-control" content="no-cache">      <meta http-equiv="expires" content="0">          </head>        <body>  <table width="960" border="0" align="center">    <tr>      <td width="536" valign="top">      <form action="${pageContext.request.contextPath}/servlet/yeepay/paymentRequest" method="post" name="paymentform">            <table width="100%" border="0">        <tr>          <td height="30" colspan="4"><table width="100%" height="50" border="0" cellpadding="0" cellspacing="1" bgcolor="#A2E0FF">            <tr>              <td align="center" bgcolor="#F7FEFF"><h3>订单号：<INPUT TYPE="text" NAME="orderid"> 应付金额：￥<INPUT TYPE="text" NAME="amount" size="6">元</h3></td>            </tr>          </table></td>          </tr>        <tr>          <td colspan="4"> </td>          </tr>        <tr>          <td height="30" colspan="4" bgcolor="#F4F8FF"><span class="STYLE3">请您选择在线支付银行</span> </td>          </tr>        <tr>          <td width="26%" height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="CMBCHINA-NET">招商银行 </td>          <td width="25%" height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="ICBC-NET">工商银行</td>          <td width="25%" height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="ABC-NET">农业银行</td>          <td width="24%" height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="CCB-NET">建设银行 </td>        </tr>        <tr>          <td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="CMBC-NET">中国民生银行总行</td>          <td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="CEB-NET" >光大银行 </td>          <td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="BOCO-NET">交通银行</td>          <td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="SDB-NET">深圳发展银行</td>        </tr>        <tr>          <td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="BCCB-NET">北京银行</td>          <td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="CIB-NET">兴业银行 </td>          <td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="SPDB-NET">上海浦东发展银行 </td>          <td ><INPUT TYPE="radio" NAME="pd_FrpId" value="ECITIC-NET">中信银行</td>        </tr>        <tr>          <td colspan="4"> </td>          </tr>        <tr>          <td colspan="4" align="center"><input type="submit" value=" 确认支付 " /></td>          </tr>      </table>      </form>   </td>      <td colspan="2" valign="top"><div class="divts"><table width="400" border="0" align="center" cellpadding="5" cellspacing="0">        <tr>          <td bgcolor="#F4F8FF"><span class="STYLE5"> 温馨提示</span></td>        </tr>        <tr>          <td><ul><li> 建行客户需到柜面签约网上银行才能支付</li>          <li>请关闭弹出窗口拦截功能</li>          <li>务必使用IE5.0以上浏览器</li>          <li>支付出错时勿按IE“后退”键</li>          </ul></td>        </tr>      </table>      </div>            <div id="blankmessage"></div>   </td>    </tr>    <tr>      <td> </td>      <td width="290"> </td>      <td width="120"> </td>    </tr>  </table>    </body>  </html>    发起支付请求  <%@ page language="java" pageEncoding="GBK"%>  <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">  <html>    <head>      <title>发起支付请求</title>            <meta http-equiv="pragma" content="no-cache">      <meta http-equiv="cache-control" content="no-cache">      <meta http-equiv="expires" content="0">        </head>        <body οnlοad="javascript:document.forms[0].submit()">      <!-- http://tech.yeepay.com:8080/robot/debug.action -->      <form name="yeepay" action="https://www.yeepay.com/app-merchant-proxy/node" method='post'>              <input type='hidden' name='p0_Cmd'   value="${messageType}"> <!-- 请求命令,在线支付固定为Buy -->          <input type='hidden' name='p1_MerId' value="${merchantID}"> <!-- 商家ID -->          <input type="hidden" name="p2_Order" value="${orderId}"> <!-- 商家的交易定单号 -->          <input type='hidden' name='p3_Amt'   value="${amount}"> <!-- 订单金额 -->          <input type='hidden' name='p4_Cur'   value="${currency}"> <!-- 货币单位 -->          <input type='hidden' name='p5_Pid'   value="${productId}"> <!-- 商品ID -->          <input type='hidden' name='p6_Pcat'  value="${productCat}"> <!-- 商品种类 -->          <input type='hidden' name='p7_Pdesc' value="${productDesc}"> <!-- 商品描述 -->          <input type='hidden' name='p8_Url'   value="${merchantCallbackURL}"> <!-- 交易结果通知地址 -->          <input type='hidden' name='p9_SAF'   value="${addressFlag}"> <!-- 需要填写送货信息 0：不需要 1:需要 -->          <input type='hidden' name='pa_MP'    value="${sMctProperties}"> <!-- 商家扩展信息 -->          <input type='hidden' name='pd_FrpId' value="${frpId}"> <!-- 银行ID -->          <!-- 应答机制 为“1”: 需要应答机制;为“0”: 不需要应答机制 -->          <input type="hidden" name="pr_NeedResponse"  value="0">          <input type='hidden' name='hmac' value="${hmac}"><!-- MD5-hmac验证码 -->      </form>    </body>  </html>    支付结果  <%@ page language="java" pageEncoding="GBK"%>  <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">  <html>    <head>      <title>支付结果</title>            <meta http-equiv="pragma" content="no-cache">      <meta http-equiv="cache-control" content="no-cache">      <meta http-equiv="expires" content="0">        </head>        <body >      <center><h3><font color="red">      ${message }      </font></h3></center>    </body>  </html>
 案例的作用及用法参考该类的说明注释
工具类分别有：
package cn.itcast.utils;

import java.util.Properties;
/**
 * 读取配置文件
 *
 */
public class ConfigInfo {
    private static Properties cache = new Properties();
    static{
        try {
            cache.load(ConfigInfo.class.getClassLoader().getResourceAsStream("merchantInfo.properties"));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    /**
     * 获取指定key的值
     * @param key
     * @return
     */
    public static String getValue(String key){
        return cache.getProperty(key);
    }
}

package cn.itcast.utils;

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;


/**
 * md5-hmac算法加密类
 */
public class DigestUtil {

    private static String encodingCharset = "UTF-8";

    public static String hmacSign(String aValue, String aKey) {
        byte k_ipad[] = new byte[64];
        byte k_opad[] = new byte[64];
        byte keyb[];
        byte value[];
        try {
            keyb = aKey.getBytes(encodingCharset);
            value = aValue.getBytes(encodingCharset);
        } catch (UnsupportedEncodingException e) {
            keyb = aKey.getBytes();
            value = aValue.getBytes();
        }

        Arrays.fill(k_ipad, keyb.length, 64, (byte) 54);
        Arrays.fill(k_opad, keyb.length, 64, (byte) 92);
        for (int i = 0; i < keyb.length; i++) {
            k_ipad[i] = (byte) (keyb[i] ^ 0x36);
            k_opad[i] = (byte) (keyb[i] ^ 0x5c);
        }

        MessageDigest md = null;
        try {
            md = MessageDigest.getInstance("MD5");
        } catch (NoSuchAlgorithmException e) {

            return null;
        }
        md.update(k_ipad);
        md.update(value);
        byte dg[] = md.digest();
        md.reset();
        md.update(k_opad);
        md.update(dg, 0, 16);
        dg = md.digest();
        return toHex(dg);
    }

    public static String toHex(byte input[]) {
        if (input == null)
            return null;
        StringBuffer output = new StringBuffer(input.length * 2);
        for (int i = 0; i < input.length; i++) {
            int current = input[i] & 0xff;
            if (current < 16)
                output.append("0");
            output.append(Integer.toString(current, 16));
        }

        return output.toString();
    }

    /**
     *
     * @param args
     * @param key
     * @return
     */
    public static String getHmac(String[] args, String key) {
        if (args == null || args.length == 0) {
            return (null);
        }
        StringBuffer str = new StringBuffer();
        for (int i = 0; i < args.length; i++) {
            str.append(args[i]);
        }
        return (hmacSign(str.toString(), key));
    }

    /**
     * @param aValue
     * @return
     */
    public static String digest(String aValue) {
        aValue = aValue.trim();
        byte value[];
        try {
            value = aValue.getBytes(encodingCharset);
        } catch (UnsupportedEncodingException e) {
            value = aValue.getBytes();
        }
        MessageDigest md = null;
        try {
            md = MessageDigest.getInstance("SHA");
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
            return null;
        }
        return toHex(md.digest(value));

    }

}


package cn.itcast.utils;

public class PanymentUtil {
    /**
     * 生成hmac方法
     *
     * @param p0_Cmd 业务类型
     * @param p1_MerId 商户编号
     * @param p2_Order 商户订单号
     * @param p3_Amt 支付金额
     * @param p4_Cur 交易币种
     * @param p5_Pid 商品名称
     * @param p6_Pcat 商品种类
     * @param p7_Pdesc 商品描述
     * @param p8_Url 商户接收支付成功数据的地址
     * @param p9_SAF 送货地址
     * @param pa_MP 商户扩展信息
     * @param pd_FrpId 银行编码
     * @param pr_NeedResponse 应答机制
     * @param keyValue 商户密钥
     * @return
     */
    public static String buildHmac(String p0_Cmd,String p1_MerId,
            String p2_Order, String p3_Amt, String p4_Cur,String p5_Pid, String p6_Pcat,
            String p7_Pdesc,String p8_Url, String p9_SAF,String pa_MP,String pd_FrpId,
            String pr_NeedResponse,String keyValue) {
        StringBuffer sValue = new StringBuffer();
        // 业务类型
        sValue.append(p0_Cmd);
        // 商户编号
        sValue.append(p1_MerId);
        // 商户订单号
        sValue.append(p2_Order);
        // 支付金额
        sValue.append(p3_Amt);
        // 交易币种
        sValue.append(p4_Cur);
        // 商品名称
        sValue.append(p5_Pid);
        // 商品种类
        sValue.append(p6_Pcat);
        // 商品描述
        sValue.append(p7_Pdesc);
        // 商户接收支付成功数据的地址
        sValue.append(p8_Url);
        // 送货地址
        sValue.append(p9_SAF);
        // 商户扩展信息
        sValue.append(pa_MP);
        // 银行编码
        sValue.append(pd_FrpId);
        // 应答机制
        sValue.append(pr_NeedResponse);

        String sNewString = DigestUtil.hmacSign(sValue.toString(), keyValue);
        return sNewString;
    }

    /**
     * 返回校验hmac方法
     *
     * @param hmac 支付网关发来的加密验证码
     * @param p1_MerId 商户编号
     * @param r0_Cmd 业务类型
     * @param r1_Code 支付结果
     * @param r2_TrxId 易宝支付交易流水号
     * @param r3_Amt 支付金额
     * @param r4_Cur 交易币种
     * @param r5_Pid 商品名称
     * @param r6_Order 商户订单号
     * @param r7_Uid 易宝支付会员ID
     * @param r8_MP 商户扩展信息
     * @param r9_BType 交易结果返回类型
     * @param keyValue 密钥
     * @return
     */
    public static boolean verifyCallback(String hmac, String p1_MerId,
            String r0_Cmd, String r1_Code, String r2_TrxId, String r3_Amt,
            String r4_Cur, String r5_Pid, String r6_Order, String r7_Uid,
            String r8_MP, String r9_BType, String keyValue) {
        StringBuffer sValue = new StringBuffer();
        // 商户编号
        sValue.append(p1_MerId);
        // 业务类型
        sValue.append(r0_Cmd);
        // 支付结果
        sValue.append(r1_Code);
        // 易宝支付交易流水号
        sValue.append(r2_TrxId);
        // 支付金额
        sValue.append(r3_Amt);
        // 交易币种
        sValue.append(r4_Cur);
        // 商品名称
        sValue.append(r5_Pid);
        // 商户订单号
        sValue.append(r6_Order);
        // 易宝支付会员ID
        sValue.append(r7_Uid);
        // 商户扩展信息
        sValue.append(r8_MP);
        // 交易结果返回类型
        sValue.append(r9_BType);
        String sNewString = DigestUtil.hmacSign(sValue.toString(), keyValue);

        if (hmac.equals(sNewString)) {
            return true;
        }
        return false;
    }
}


Servlet相关的类
package cn.itcast.servlet;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import cn.itcast.utils.ConfigInfo;
import cn.itcast.utils.PanymentUtil;
/**
 * 发起支付请求
 * @author 传智播客
 *
 */
public class PaymentRequest extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        this.doPost(request, response);
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        request.setCharacterEncoding("GBK");
        String orderid = request.getParameter("orderid");//订单号
        String amount = request.getParameter("amount");//支付金额
        String pd_FrpId = request.getParameter("pd_FrpId");//选择的支付银行
        String p1_MerId = ConfigInfo.getValue("p1_MerId");
        String keyValue = ConfigInfo.getValue("keyValue");
        String merchantCallbackURL = ConfigInfo.getValue("merchantCallbackURL");
        String messageType = "Buy"; // 请求命令,在线支付固定为Buy
        String currency = "CNY"; // 货币单位
        String productDesc = ""; // 商品描述
        String productCat = ""; // 商品种类
        String productId = ""; // 商品ID
        String addressFlag = "0"; // 需要填写送货信息 0：不需要 1:需要
        String sMctProperties = ""; // 商家扩展信息
        String pr_NeedResponse = "0"; // 应答机制
        String md5hmac = PanymentUtil.buildHmac(messageType, p1_MerId, orderid, amount, currency,
                productId, productCat, productDesc, merchantCallbackURL, addressFlag, sMctProperties,
                pd_FrpId, pr_NeedResponse, keyValue);

        request.setAttribute("messageType", messageType);
        request.setAttribute("merchantID", p1_MerId);
        request.setAttribute("orderId", orderid);
        request.setAttribute("amount", amount);
        request.setAttribute("currency", currency);
        request.setAttribute("productId", productId);
        request.setAttribute("productCat", productCat);
        request.setAttribute("productDesc", productDesc);
        request.setAttribute("merchantCallbackURL", merchantCallbackURL);
        request.setAttribute("addressFlag", addressFlag);
        request.setAttribute("sMctProperties", sMctProperties);
        request.setAttribute("frpId", pd_FrpId);
        request.setAttribute("pr_NeedResponse", pr_NeedResponse);
        request.setAttribute("hmac", md5hmac);

        request.getRequestDispatcher("/WEB-INF/page/connection.jsp").forward(request, response);
    }

}


package cn.itcast.servlet;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import cn.itcast.utils.ConfigInfo;
import cn.itcast.utils.PanymentUtil;
/**
 * 响应银行支付结果请求
 * @author 传智播客
 *
 */
public class PaymentResutlResponse extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        this.doPost(request, response);
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        request.setCharacterEncoding("GBK");
        String merchantID = ConfigInfo.getValue("p1_MerId"); // 商家ID
        String keyValue = ConfigInfo.getValue("keyValue"); // 商家密钥

        String sCmd = request.getParameter("r0_Cmd"); //业务类型
        String sResultCode = request.getParameter("r1_Code"); //扣款结果,该字段值为1时表示扣款成功.
        String sTrxId = request.getParameter("r2_TrxId"); //YeePay易宝交易订单号
        String amount = request.getParameter("r3_Amt");//扣款金额,交易结束后,YeePay易宝交易系统将实际扣款金额返回给商户
        String currency = request.getParameter("r4_Cur");//交易币种,人民币为CNY
        String productId = request.getParameter("r5_Pid");//商品ID
        String orderId = request.getParameter("r6_Order");//商户订单号
        String userId = request.getParameter("r7_Uid");//YeePay易宝会员ID
        String mp  = request.getParameter("r8_MP");//商户扩展信息,可以任意填写1K 的字符串,交易返回时将原样返回
        String bType = request.getParameter("r9_BType");//交易结果通知类型,1: 交易成功回调(浏览器重定向)2: 交易成功主动通知(服务器点对点通讯)
        String rb_BankId  = request.getParameter("rb_BankId");//支付银行
        String rp_PayDate = request.getParameter("rp_PayDate");//在银行支付时的时间
        String hmac = request.getParameter("hmac");//MD5交易签名

        boolean result = PanymentUtil.verifyCallback(hmac, merchantID, sCmd, sResultCode, sTrxId, amount,
                currency, productId, orderId, userId, mp, bType, keyValue);
        if(result){
            if("1".equals(sResultCode)){
                //你们这个地方应该把数据库中订单的支付状态设置成已经支付.
                String message = "订单号为:"+ orderId+ "的订单支付成功了";
                message += ",用户支付了"+ amount +"元";
                message +=",交易结果通知类型:";
                if("1".equals(bType)){
                     message += "浏览器重定向";
                }else if("2".equals(bType)){
                     message += "易宝支付网关后台程序通知";
                }
                message += ",易宝订单系统中的订单号为:"+ sTrxId;
                request.setAttribute("message", message);
            }else{
                request.setAttribute("message", "用户支付失败");
            }
        }else{
            request.setAttribute("message", "数据来源不合法");
        }
        request.getRequestDispatcher("/WEB-INF/page/paymentResult.jsp").forward(request, response);
    }

}

显示界面jsp
<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>

    <title>巴巴运动网_支付第一步,选择支付银行</title>
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">

  </head>

  <body>
<table width="960" border="0" align="center">
  <tr>
    <td width="536" valign="top">
    <form action="${pageContext.request.contextPath}/servlet/yeepay/paymentRequest" method="post" name="paymentform">

    <table width="100%" border="0">
      <tr>
        <td height="30" colspan="4"><table width="100%" height="50" border="0" cellpadding="0" cellspacing="1" bgcolor="#A2E0FF">
          <tr>
            <td align="center" bgcolor="#F7FEFF"><h3>订单号：<INPUT TYPE="text" NAME="orderid"> 应付金额：￥<INPUT TYPE="text" NAME="amount" size="6">元</h3></td>
          </tr>
        </table></td>
        </tr>
      <tr>
        <td colspan="4"> </td>
        </tr>
      <tr>
        <td height="30" colspan="4" bgcolor="#F4F8FF"><span class="STYLE3">请您选择在线支付银行</span> </td>
        </tr>
      <tr>
        <td width="26%" height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="CMBCHINA-NET">招商银行 </td>
        <td width="25%" height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="ICBC-NET">工商银行</td>
        <td width="25%" height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="ABC-NET">农业银行</td>
        <td width="24%" height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="CCB-NET">建设银行 </td>
      </tr>
      <tr>
        <td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="CMBC-NET">中国民生银行总行</td>
        <td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="CEB-NET" >光大银行 </td>
        <td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="BOCO-NET">交通银行</td>
        <td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="SDB-NET">深圳发展银行</td>
      </tr>
      <tr>
        <td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="BCCB-NET">北京银行</td>
        <td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="CIB-NET">兴业银行 </td>
        <td height="25"><INPUT TYPE="radio" NAME="pd_FrpId" value="SPDB-NET">上海浦东发展银行 </td>
        <td ><INPUT TYPE="radio" NAME="pd_FrpId" value="ECITIC-NET">中信银行</td>
      </tr>
      <tr>
        <td colspan="4"> </td>
        </tr>
      <tr>
        <td colspan="4" align="center"><input type="submit" value=" 确认支付 " /></td>
        </tr>
    </table>
    </form>   </td>
    <td colspan="2" valign="top"><div class="divts"><table width="400" border="0" align="center" cellpadding="5" cellspacing="0">
      <tr>
        <td bgcolor="#F4F8FF"><span class="STYLE5"> 温馨提示</span></td>
      </tr>
      <tr>
        <td><ul><li> 建行客户需到柜面签约网上银行才能支付</li>
        <li>请关闭弹出窗口拦截功能</li>
        <li>务必使用IE5.0以上浏览器</li>
        <li>支付出错时勿按IE“后退”键</li>
        </ul></td>
      </tr>
    </table>
    </div>

    <div id="blankmessage"></div>   </td>
  </tr>
  <tr>
    <td> </td>
    <td width="290"> </td>
    <td width="120"> </td>
  </tr>
</table>
  </body>
</html>

发起支付请求
<%@ page language="java" pageEncoding="GBK"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>发起支付请求</title>

    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">
  </head>

  <body οnlοad="javascript:document.forms[0].submit()">
    <!-- http://tech.yeepay.com:8080/robot/debug.action -->
    <form name="yeepay" action="https://www.yeepay.com/app-merchant-proxy/node" method='post'>
        <input type='hidden' name='p0_Cmd'   value="${messageType}"> <!-- 请求命令,在线支付固定为Buy -->
        <input type='hidden' name='p1_MerId' value="${merchantID}"> <!-- 商家ID -->
        <input type="hidden" name="p2_Order" value="${orderId}"> <!-- 商家的交易定单号 -->
        <input type='hidden' name='p3_Amt'   value="${amount}"> <!-- 订单金额 -->
        <input type='hidden' name='p4_Cur'   value="${currency}"> <!-- 货币单位 -->
        <input type='hidden' name='p5_Pid'   value="${productId}"> <!-- 商品ID -->
        <input type='hidden' name='p6_Pcat'  value="${productCat}"> <!-- 商品种类 -->
        <input type='hidden' name='p7_Pdesc' value="${productDesc}"> <!-- 商品描述 -->
        <input type='hidden' name='p8_Url'   value="${merchantCallbackURL}"> <!-- 交易结果通知地址 -->
        <input type='hidden' name='p9_SAF'   value="${addressFlag}"> <!-- 需要填写送货信息 0：不需要 1:需要 -->
        <input type='hidden' name='pa_MP'    value="${sMctProperties}"> <!-- 商家扩展信息 -->
        <input type='hidden' name='pd_FrpId' value="${frpId}"> <!-- 银行ID -->
        <!-- 应答机制 为“1”: 需要应答机制;为“0”: 不需要应答机制 -->
        <input type="hidden" name="pr_NeedResponse"  value="0">
        <input type='hidden' name='hmac' value="${hmac}"><!-- MD5-hmac验证码 -->
    </form>
  </body>
</html>

支付结果
<%@ page language="java" pageEncoding="GBK"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>支付结果</title>

    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">
  </head>

  <body >
    <center><h3><font color="red">
    ${message }
    </font></h3></center>
  </body>
</html>