易宝支付工具类

package com.kdyzm.utils;


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


public class PaymentUtil {


private static String encodingCharset = "UTF-8";

/**
* 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) {
StringBuilder sValue = new StringBuilder();
// 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);

return PaymentUtil.hmacSign(sValue.toString(), keyValue);
}

/**
* 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) {
StringBuilder sValue = new StringBuilder();
// 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 = PaymentUtil.hmacSign(sValue.toString(), keyValue);
return sNewString.equals(hmac);
}

/**
* @param aValue
* @param aKey
* @return
*/
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));


}

// public static void main(String[] args) {
// System.out.println(hmacSign("AnnulCard1000043252120080620160450.0http://localhost/SZXpro/callback.asp杩?4564868265473632445648682654736324511","8UPp0KE8sq73zVP370vko7C39403rtK1YwX40Td6irH216036H27Eb12792t"));
// }
}

//该Servlet处理支付请求并进行重定向

package com.kdyzm.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 com.kdyzm.utils.PaymentUtil;
//该Servlet处理支付请求并进行重定向
public class PayServlet 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("utf-8");
response.setContentType("text/html;charset=utf-8");
String p0_Cmd="Buy",
p1_MerId="10001126856",
p2_Order=request.getParameter("p2_Order"),
p3_Amt=request.getParameter("p3_Amt"),
p4_Cur="CNY",
p5_Pid="",
p6_Pcat="",
p7_Pdesc="",
p8_Url="http://localhost:8080/day21_2_pay/backServlet",//此处换成自己的路径
p9_SAF="",
pa_MP="",
pd_FrpId=request.getParameter("pd_FrpId"),
pr_NeedResponse="1";
String keyValue="69cl522AV6q613Ii4W6u8K6XuW8vM1N6bFgyv769220IuYe9u37N4y7rI4Pl";
String hmac=PaymentUtil.buildHmac(p0_Cmd, p1_MerId, p2_Order, p3_Amt, p4_Cur, p5_Pid, p6_Pcat, p7_Pdesc, p8_Url, p9_SAF, pa_MP, pd_FrpId, pr_NeedResponse, keyValue);
String url="https://www.yeepay.com/app-merchant-proxy/node?"+
"&p0_Cmd="+p0_Cmd+
"&p1_MerId="+p1_MerId+
"&p2_Order="+p2_Order+
"&p3_Amt="+p3_Amt+
"&p4_Cur="+p4_Cur+
"&p5_Pid="+p5_Pid+
"&p6_Pcat="+p6_Pcat+
"&p7_Pdesc="+p7_Pdesc+
"&p8_Url="+p8_Url+
"&p9_SAF="+p9_SAF+
"&pa_MP="+pa_MP+
"&pd_FrpId="+pd_FrpId+
"&pr_NeedResponse="+pr_NeedResponse+
"&hmac="+hmac;
response.sendRedirect(url);
}
}

//显示支付结果的页面

package com.kdyzm.servlet;


import java.io.IOException;
import java.io.PrintWriter;


import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
//显示支付结果的页面
public class BackServlet 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("utf-8");
response.setContentType("text/html;charset=utf-8");
String r1_Code=request.getParameter("r1_Code");
PrintWriter pw=response.getWriter();
if("1".equals(r1_Code))
{
String p1_MerId=request.getParameter("p1_MerId");
String r3_Amt=request.getParameter("r3_Amt");
String r6_Order=request.getParameter("r6_Order");
String rp_PayDate=request.getParameter("rp_PayDate");
pw.println("支付成功！<br/>"
+ "商户编号："+p1_MerId+"<br/>"
+ "支付金额："+r3_Amt+"<br/>"
+"商户订单号："+r6_Order+"<br/>"
+"支付成功时间："+rp_PayDate);
}
else
{
pw.println("支付失败！");
}
}


}

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作者：bug都是你写的
来源:CSDN 
原文:https://blog.csdn.net/qq_34742146/article/details/100557068
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