1.appId和secretKey定义
appId=APPID
secretKey =cfq4189auoo13y17ur9n2rl7v2tkz3iq
2.sign获取算法
md5（secretKey+参数json字符串+timestamp+secretKey）后的大写字母。
/*** 参数按key进行排序* @param obj* @return*/public static String getParamStr(Object obj, List<String> ignoreKey) {if (obj == null) {return null;}Map<String, Object> map = object2Map(obj);if (map == null || map.isEmpty()) {return null;}//升序排序Map<String, Object> sortMap = new TreeMap<>(String::compareTo);sortMap.putAll(map);StringBuilder signStr = new StringBuilder();for (Map.Entry<String, Object> entry : sortMap.entrySet()) {//跳过参数if (CollectionUtils.isNotEmpty(ignoreKey) && ignoreKey.contains(entry.getKey())) {continue;}signStr.append(entry.getKey()).append("=").append(String.valueOf(entry.getValue())).append("&");}//去掉最后一个&signStr.deleteCharAt(signStr.length() - 1);return signStr.toString();}public static Map<String, Object> object2Map(Object obj) {if (obj == null) {return null;}BeanMap beanMap = new org.apache.commons.beanutils.BeanMap(obj);HashMap<String, Object> map = new HashMap<>();for (Object key : beanMap.keySet()) {// 去掉值为null的字段if ("class".equals(key) || Objects.isNull(beanMap.get(key))) {continue;}map.put((String) key, beanMap.get(key));}return map;}public static String sign(String paramJsonStr, String secretKey, String timestamp) throws NoSuchAlgorithmException {StringBuilder sb = new StringBuilder();sb.append(secretKey);//秘钥sb.append(paramJsonStr);//参数字符串sb.append(timestamp);//请求时间sb.append(secretKey);//秘钥return getMd5(sb.toString().getBytes(StandardCharsets.UTF_8)).toUpperCase();}public static String getMd5(byte[] buffer) throws NoSuchAlgorithmException {String s;char[] hexDigist = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};MessageDigest md = MessageDigest.getInstance("MD5");md.update(buffer);// 16个字节的长整数byte[] datas = md.digest();char[] str = new char[2 * 16];int k = 0;for (int i = 0; i < 16; i++) {byte b = datas[i];str[k++] = hexDigist[b >>> 4 & 0xf];// 高4位str[k++] = hexDigist[b & 0xf];// 低4位}s = new String(str);return s;}
3.接口Header请求头参数解释
