package com.java110.front.controller.app;
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import com.alibaba.fastjson.JSONObject;
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import org.apache.commons.codec.digest.DigestUtils;
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import org.apache.commons.lang.StringUtils;
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import javax.servlet.http.HttpServletRequest;
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import java.io.UnsupportedEncodingException;
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import java.util.*;
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/**
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* @program: openPlatform
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* @description: 接收并处理支付结果通知的demo
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* @author: Mr.YS
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* @CreatDate: 2019/12/25/025 16:42
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*/
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public class NotifyDemo {
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/**
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* md5秘钥
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*/
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static final String md5key = "JkENP4taKmyH2aBsxXZbnpJDGZ7pBhasCKcYxpt7xyNP4QXS";
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/**
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* 支付通知模块，用于：在支付成功后 接受银商平台发送的支付结果通知
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*/
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// @RequestMapping(value = "/notify.do", method = RequestMethod.POST)
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public static void main(String[] args) throws Exception {
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/*接收参数*/
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String p = "{msgType=wx.notify, payTime=2021-09-03 11:25:20, buyerCashPayAmt=10, connectSys=UNIONPAY, sign=21B89B7F9EB6837430A8B30E1DF779D7, merName=青海德坤电力有限公司, mid=898630149000110, invoiceAmount=10, settleDate=2021-09-03, billFunds=现金:10, buyerId=otdJ_uCsgFQi-XigMpadM9gB4h0w, mchntUuid=2d9081bd76d235d20176da1bf4f62bc9, tid=CV5EW7IM, instMid=YUEDANDEFAULT, receiptAmount=10, couponAmount=0, targetOrderId=4200001202202109033453643518, signType=MD5, billFundsDesc=现金支付0.10元。, subBuyerId=oBFo-5-xs50SKaC5hjYf2Ux_Ww2g, orderDesc=青海德坤电力有限公司, seqId=23336168921N, merOrderId=1017102021090390760012, targetSys=WXPay, bankInfo=OTHERS, CJ=iIAF, totalAmount=10, wId=hFXywDBfLkpKik7ZLPlAsRUQ4qORS1n8, createTime=2021-09-03 11:25:14, buyerPayAmount=10, notifyId=33e8d307-35ab-4a5a-9551-70a404a45cc6, subInst=103800, status=TRADE_SUCCESS}";
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Map<String, String> params =mapStringToMap(p);
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System.out.println("params:" + params);
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String sign = params.get("sign");
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System.out.println(sign);
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/*验签*/
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//对通知内容生成sign
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String strSign = makeSign(md5key, params);
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//System.out.println("strSign="+strSign);
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//判断签名是否相等
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if (sign.equals(strSign)) {
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// 收到通知后记得返回SUCCESS
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System.out.println("验签通过");
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} else {
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System.out.println("验签未通过");
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}
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}
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public static Map<String,String> mapStringToMap(String str){
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str=str.substring(1, str.length()-1);
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String[] strs=str.split(",");
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Map<String,String> map = new HashMap<String, String>();
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for (String string : strs) {
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String key=string.split("=")[0];
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String value=string.split("=")[1];
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map.put(key.trim(), value.trim());
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}
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return map;
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}
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// 获取HttpServletRequest里面的参数
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public static Map<String, String> getRequestParams(HttpServletRequest request) {
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Map<String, String[]> params = request.getParameterMap();
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Map<String, String> params2 = new HashMap<>();
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for (String key : params.keySet()) {
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String[] values = params.get(key);
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if (values.length > 0) {
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params2.put(key, request.getParameter(key));
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}
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}
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return params2;
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}
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public static String makeSign(String md5Key, Map<String, String> params) {
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String preStr = buildSignString(params); // 把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串
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String text = preStr + md5Key;
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System.out.println("待签名字符串：" + text);
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return DigestUtils.md5Hex(getContentBytes(text)).toUpperCase();
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}
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// 构建签名字符串
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public static String buildSignString(Map<String, String> params) {
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// params.put("Zm","test_test");
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if (params == null || params.size() == 0) {
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return "";
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}
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List<String> keys = new ArrayList<>(params.size());
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for (String key : params.keySet()) {
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if ("sign".equals(key))
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continue;
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if (StringUtils.isEmpty(params.get(key)))
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continue;
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keys.add(key);
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}
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//System.out.println(listToString(keys));
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Collections.sort(keys);
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StringBuilder buf = new StringBuilder();
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for (int i = 0; i < keys.size(); i++) {
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String key = keys.get(i);
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String value = params.get(key);
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if (i == keys.size() - 1) {// 拼接时，不包括最后一个&字符
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buf.append(key + "=" + value);
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} else {
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buf.append(key + "=" + value + "&");
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}
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}
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return buf.toString();
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}
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// 根据编码类型获得签名内容byte[]
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public static byte[] getContentBytes(String content) {
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try {
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return content.getBytes("UTF-8");
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} catch (UnsupportedEncodingException e) {
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throw new RuntimeException("签名过程中出现错误");
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}
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}
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}
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