微信支付NATIVE版V2旧版

微信支付NATIVE版V2旧版

工具类

package com.xihui.nyy_cloud.utils;

import com.xihui.nyy_cloud.constant.ConstWeiChat;
import com.xihui.nyy_cloud.constant.WXPayConstants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import java.io.*;
import java.security.*;
import java.util.*;


public class WXPayUtil {
   
    
    

    private static final String SYMBOLS = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";

    private static final Random RANDOM = new SecureRandom();

    /**
     * 统一下单 v2版 Native
     * @param mchId 商户号
     * @param body 商品描述
     * @param attach 附加数据（可有可无）
     * @param orderId 商家订单号
     * @param totalFee 总金额
     * @param ip 用户请求ip地址
     * @param notifyUrl 支付结果回调地址
     * @return 返回封装好后的数据，包括签名
     * @throws Exception
     */
    public static Map<String, String> genParamToMap(String mchId,String body,String attach,String orderId,String totalFee,String ip,String notifyUrl) throws Exception {
   
    
    
        Map<String, String> paraMap = new HashMap<>(16);
        paraMap.put("appid", ConstWeiChat.APPID);  //appid
        //附加数据，在查询API和支付通知中原样返回
        paraMap.put("attach", attach); 
        paraMap.put("body", "NYY-" + body);//商品描述
        paraMap.put("mch_id", mchId);
        paraMap.put("nonce_str", WXPayUtil.generateNonceStr()); //随机数
        //此路径是微信服务器调用支付结果通知路径
        paraMap.put("notify_url",notifyUrl);
        //订单号
        paraMap.put("out_trade_no", orderId);
        paraMap.put("spbill_create_ip", ip);//用户请求的ip
        paraMap.put("total_fee", totalFee);
        paraMap.put("trade_type", "NATIVE "); //Native的交易类型
        String sign = WXPayUtil.generateSignature(paraMap, ConfigUtil.API_KEY);
        paraMap.put("sign", sign);
        return paraMap;
    }

    /**
     * 退款
     * @param mchId
     * @param orderId
     * @param totalFee
     * @param notifyUrl
     * @return
     * @throws Exception
     */
    public static Map<String, String> genParamToMapRefund(String mchId,String orderId,String outRefundNo,String totalFee,String refundFee,String notifyUrl) throws Exception {
   
    
    
        Map<String, String> paraMap = new HashMap<>(16);
        paraMap.put("appid", ConstWeiChat.APPID);
        paraMap.put("mch_id", mchId);
        paraMap.put("nonce_str", WXPayUtil.generateNonceStr());
        //此路径是微信服务器调用支付结果通知路径
        paraMap.put("notify_url",notifyUrl);
        //订单号
        paraMap.put("out_trade_no", orderId);
        paraMap.put("out_refund_no",outRefundNo);
        paraMap.put("total_fee", totalFee);
        paraMap.put("refund_fee", refundFee);
        paraMap.put("refund_fee_type", "RMB");
        String sign = WXPayUtil.generateSignature(paraMap, ConfigUtil.API_KEY);
        paraMap.put("sign", sign);
        return paraMap;
    }


    /**
     * XML格式字符串转换为Map
     *
     * @param strXML XML字符串
     * @return XML数据转换后的Map
     * @throws Exception
     */
    public static Map<String, String> xmlToMap(String strXML) throws Exception {
   
    
    
        try {
   
    
    
            Map<String, String> data = new HashMap<String, String>();
            DocumentBuilder documentBuilder = WXPayXmlUtil.newDocumentBuilder();
            InputStream stream = new ByteArrayInputStream(strXML.getBytes("UTF-8"));
            org.w3c.dom.Document doc = documentBuilder.parse(stream);
            doc.getDocumentElement().normalize();
            NodeList nodeList = doc.getDocumentElement().getChildNodes();
            for (int idx = 0; idx < nodeList.getLength(); ++idx) {
   
    
    
                Node node = nodeList.item(idx);
                if (node.getNodeType() == Node.ELEMENT_NODE) {
   
    
    
                    org.w3c.dom.Element element = (org.w3c.dom.Element) node;
                    data.put(element.getNodeName(), element.getTextContent());
                }
            }
            try {
   
    
    
                stream.close();
            } catch (Exception ex) {
   
    
    
                // do nothing
            }
            return data;
        } catch (Exception ex) {
   
    
    
            WXPayUtil.getLogger().warn("Invalid XML, can not convert to map. Error message: {}. XML content: {}", ex.getMessage(), strXML);
            throw ex;
        }

    }

    /**
     * 将Map转换为XML格式的字符串
     *
     * @param data Map类型数据
     * @return XML格式的字符串
     * @throws Exception
     */
    public static String mapToXml(Map<String, String> data) throws Exception {
   
    
    
        org.w3c.dom.Document document = WXPayXmlUtil.newDocument();
        org.w3c.dom.Element root = document.createElement("xml");
        document.appendChild(root);
        for (String key : data.keySet()) {
   
    
    
            String value = data.get(key);
            if (value == null) {
   
    
    
                value = "";
            }
            value = value.trim();
            org.w3c.dom.Element filed = document.createElement(key);
            filed.appendChild(document.createTextNode(value));
            root.appendChild(filed);
        }
        TransformerFactory tf = TransformerFactory.newInstance();
        Transformer transformer = tf.newTransformer();
        DOMSource source = new DOMSource(document);
        transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
        transformer.setOutputProperty(OutputKeys.INDENT, "yes");
        StringWriter writer = new StringWriter();
        StreamResult result = new StreamResult(writer);
        transformer.transform(source, result);
        String output = writer.getBuffer().toString(); //.replaceAll("\n|\r", "");
        try {
   
    
    
            writer.close();
        } catch (Exception ex) {
   
    
    
        }
        return output;
    }


    /**
     * 生成带有 sign 的 XML 格式字符串
     *
     * @param data Map类型数据
     * @param key  API密钥
     * @return 含有sign字段的XML
     */
    public static String generateSignedXml(final Map<String, String> data, String key) throws Exception {
   
    
    
        return generateSignedXml(data, key, WXPayConstants.SignType.MD5);
    }

    /**
     * 生成带有 sign 的 XML 格式字符串
     *
     * @param data     Map类型数据
     * @param key      API密钥
     * @param signType 签名类型
     * @return 含有sign字段的XML
     */
    public static String generateSignedXml(final Map<String, String> data, String key, WXPayConstants.SignType signType) throws Exception {
   
    
    
        String sign = generateSignature(data, key, signType);
        data.put(WXPayConstants.FIELD_SIGN, sign);
        return mapToXml(data);
    }


    /**
     * 判断签名是否正确
     *
     * @param xmlStr XML格式数据
     * @param key    API密钥
     * @return 签名是否正确
     * @throws Exception
     */
    public static boolean isSignatureValid(String xmlStr, String key) throws Exception {
   
    
    
        Map<String, String> data = xmlToMap(xmlStr);
        if (!data.containsKey(WXPayConstants.FIELD_SIGN)) {
   
    
    
            return false;
        }
        String sign = data.get(WXPayConstants.FIELD_SIGN);
        return generateSignature(data, key).equals(sign);
    }

    /**
     * 判断签名是否正确，必须包含sign字段，否则返回false。使用MD5签名。
     *
     * @param data Map类型数据
     * @param key  API密钥
     * @return 签名是否正确
     * @throws Exception
     */
    public static boolean isSignatureValid(Map<String, String> data, String key) throws Exception {
   
    
    
        return isSignatureValid(data, key, WXPayConstants.SignType.MD5);
    }

    /**
     * 判断签名是否正确，必须包含sign字段，否则返回false。
     *
     * @param data     Map类型数据
     * @param key      API密钥
     * @param signType 签名方式
     * @return 签名是否正确
     * @throws Exception
     */
    public static boolean isSignatureValid(Map<String, String> data, String key, WXPayConstants.SignType signType) throws Exception {
   
    
    
        if (!data.containsKey(WXPayConstants.FIELD_SIGN)) {
   
    
    
            return false;
        }
        String sign = data.get(WXPayConstants.FIELD_SIGN);
        return generateSignature(data, key, signType).equals(sign);
    }

    /**
     * 生成签名
     *
     * @param data 待签名数据
     * @param key  API密钥
     * @return 签名
     */
    public static String generateSignature(final Map<String, String> data, String key) throws Exception {
   
    
    
        return generateSignature(data, key, WXPayConstants.SignType.MD5);
    }

    /**
     * 生成签名. 注意，若含有sign_type字段，必须和signType参数保持一致。
     *
     * @param data     待签名数据
     * @param key      API密钥
     * @param signType 签名方式
     * @return 签名
     */
    public static String generateSignature(final Map<String, String> data, String key, WXPayConstants.SignType signType) throws Exception {
   
    
    
        Set<String> keySet = data.keySet();
        String[] keyArray = keySet.toArray(new String[keySet.size()]);
        Arrays.sort(keyArray);
        StringBuilder sb = new StringBuilder();
        for (String k : keyArray) {
   
    
    
            if (k.equals(WXPayConstants.FIELD_SIGN)) {
   
    
    
                continue;
            }
            // 参数值为空，则不参与签名
            if (data.get(k).trim().length() > 0) {
   
    
    
                sb.append(k).append("=").append(data.get(k).trim()).append("&");
            }
        }
        sb.append("key=").append(key);
        if (WXPayConstants.SignType.MD5.equals(signType)) {
   
    
    
            r