package com.walker.pay.wechat.v2;
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import com.walker.infrastructure.core.domx.JaxbDomParser;
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import com.walker.infrastructure.utils.KeyValue;
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import com.walker.infrastructure.utils.MD5;
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import com.walker.infrastructure.utils.StringUtils;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.w3c.dom.Document;
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import org.w3c.dom.Node;
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import java.io.UnsupportedEncodingException;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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public class SignUtils {
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protected static final Logger logger = LoggerFactory.getLogger(SignUtils.class);
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private static final JaxbDomParser domParser = new JaxbDomParser();
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/**
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* 返回xml字符串，该方法用来告诉微信，通知处理结果
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* @param status 状态
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* @param msg 描述
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* @return
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* @date 2023-02-17
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*/
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public static String toXmlNotifyStatus(String status, String msg){
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List<KeyValue<String, String>> params = new ArrayList<>(2);
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params.add(new KeyValue<>("return_code", status));
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params.add(new KeyValue<>("return_msg", msg));
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return toXml(params);
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}
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public static Map<String,String> decodeXml(String content) {
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Map<String, String> xml = new HashMap<String, String>();
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Document doc = domParser.getDocumentFromXml(content);
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Node node = doc.getFirstChild(); // 获取根节点
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for(Node childNode = node.getFirstChild(); childNode != null; childNode = childNode.getNextSibling()){
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if(childNode.getNodeType() == Node.ELEMENT_NODE){
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xml.put(childNode.getNodeName(), childNode.getTextContent());
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}
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}
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return xml;
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}
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public static String toXml(List<KeyValue<String, String>> params) {
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StringBuilder sb = new StringBuilder();
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sb.append("<xml>");
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for (int i = 0; i < params.size(); i++) {
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sb.append("<"+params.get(i).getKey()+">");
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sb.append(params.get(i).getValue());
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sb.append("</"+params.get(i).getKey()+">");
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}
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sb.append("</xml>");
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return sb.toString();
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}
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/**
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* 与genPackageSign方法唯一的区别就是，没有转成大写字母。不知道这帮微信咋弄文档
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* @param params
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* @param wxApiKey
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* @return
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*/
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public static final String getAppSign(List<KeyValue<String, String>> params, String wxApiKey){
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return getSign(params, wxApiKey, false);
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}
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public static final String getPackageSign(List<KeyValue<String, String>> params, String wxApiKey){
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return getSign(params, wxApiKey, true);
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}
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public static final String getSign(List<KeyValue<String, String>> params, String wxApiKey, boolean upperCase){
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < params.size(); i++) {
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sb.append(params.get(i).getKey());
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sb.append(StringUtils.CHAR_EQUALS);
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sb.append(params.get(i).getValue());
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sb.append(StringUtils.CHAR_AND);
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}
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sb.append("key=");
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sb.append(wxApiKey);
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logger.debug("sign = {}", sb);
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String packageSign;
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try {
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if(upperCase){
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packageSign = MD5.getMessageDigest(sb.toString().getBytes(StringUtils.DEFAULT_CHARSET_UTF8)).toUpperCase();
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} else {
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packageSign = MD5.getMessageDigest(sb.toString().getBytes(StringUtils.DEFAULT_CHARSET_UTF8));
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}
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// logger.debug("摘要信息：" + packageSign);
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// String result = new String(packageSign.toString().getBytes(), "utf-8");
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// logger.debug("第二次转：" + result);
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// return result;
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return packageSign;
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} catch (UnsupportedEncodingException e) {
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e.printStackTrace();
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throw new RuntimeException("签名不支持的字符集utf8");
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}
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}
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/**
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* 获取sign
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* @param map 待签名数据
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* @param signKey 微信签名key
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* @return String
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*/
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public static String getSign(Map<String, String> map, String signKey) throws Exception{
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// map排序
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Set<String> keySet = map.keySet();
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String[] keyArray = keySet.toArray(new String[keySet.size()]);
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Arrays.sort(keyArray);
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StringBuilder sb = new StringBuilder();
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for (String k : keyArray) {
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if (k.equals(MD5.NAME_SIGN_2)) {
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continue;
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}
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if (StringUtils.isNotEmpty(map.get(k)) && map.get(k).trim().length() > 0) // 参数值为空，则不参与签名
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sb.append(k).append(StringUtils.CHAR_EQUALS).append(map.get(k).trim()).append(StringUtils.CHAR_AND);
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}
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sb.append("key=").append(signKey);
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// String sign = SecureUtil.md5(sb.toString()).toUpperCase();
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String sign = MD5.getMessageDigest(sb.toString().getBytes(StringUtils.DEFAULT_CHARSET_UTF8)).toUpperCase();
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// System.out.println("sign ========== " + sign);
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return sign;
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}
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}
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