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@@ -0,0 +1,121 @@
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+package cn.efunbox.audio.utils;
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+
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+import org.apache.commons.lang.StringUtils;
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+
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+import java.io.UnsupportedEncodingException;
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+import java.security.MessageDigest;
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+import java.security.NoSuchAlgorithmException;
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+import java.util.*;
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+
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+/**
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+ * SecurityUtils
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+ * Created by xusq on 2018/9/11.
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+ */
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+public class SecurityUtils {
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+
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+ private SecurityUtils(){}
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+
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+ public static final String MD5 = "MD5";
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+
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+ public static final String SIGN = "sign";
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+
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+ public static char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
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+
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+ public static String createMD5Sign(Map<String, String> paramMap, String signKey) {
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+
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+ List<String> sortedKeys = new ArrayList<String>();
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+ for (Map.Entry<String, String> entry : paramMap.entrySet()) {
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+ if (SIGN.equals(entry.getKey())) {
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+ continue;
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+ }
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+
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+ sortedKeys.add(entry.getKey());
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+ }
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+
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+ if (sortedKeys.size() == 0) {
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+ // 没有参数
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+ return "";
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+ }
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+
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+ Collections.sort(sortedKeys);
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+
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+ StringBuffer buff = new StringBuffer("");
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+ for (String key : sortedKeys) {
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+ String val = paramMap.get(key);
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+ if (StringUtils.isBlank(val)) {
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+ continue;
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+ }
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+
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+ buff.append(key).append("=").append(val).append("&");
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+ }
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+
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+ buff.append("key=").append(signKey);
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+
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+ try {
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+ return SecurityUtils.MD5(buff.toString(), null);
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+ } catch (Exception e) {
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+ throw new RuntimeException("签名错误");
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+ }
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+ }
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+
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+
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+ /**
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+ * MD5摘要算法
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+ *
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+ * @param content
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+ * 摘要内容
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+ * @param charset
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+ * 字符集，默认为UTF-8
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+ * @return
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+ * @throws Exception
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+ */
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+ public static String MD5(String content, String charset){
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+ if (charset == null) {
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+ charset = "UTF-8";
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+ }
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+
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+ MessageDigest digest = null;
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+ try {
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+ digest = MessageDigest.getInstance(MD5);
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+ } catch (NoSuchAlgorithmException e) {
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+ e.printStackTrace();
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+ }
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+ try {
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+ digest.update(content.getBytes(charset)); // 使用指定的字节更新摘要
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+ } catch (UnsupportedEncodingException e) {
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+ e.printStackTrace();
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+ }
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+ byte[] md = digest.digest(); // 获得密文
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+
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+ return byteToHexString(md);
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+ }
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+
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+ // 把密文转换成十六进制的字符串形式
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+ public static String byteToHexString(byte[] bytes) {
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+ StringBuilder sb = new StringBuilder();
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+ for (byte b : bytes) {
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+ sb.append(byteToHexString(b));
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+ }
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+
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+ return sb.toString();
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+ }
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+
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+ public static String byteToHexString(byte ib) {
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+ char[] ob = new char[2];
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+ ob[0] = hexDigits[(ib >>> 4) & 0X0f];
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+ ob[1] = hexDigits[ib & 0X0F];
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+ return new String(ob);
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+ }
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+
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+ public static void main(String[] args) {
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+
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+ Map<String,String> param = new HashMap<>();
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+
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+ param.put("idChannel","1001");
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+ param.put("idDevice","10011");
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+ String test = SecurityUtils.createMD5Sign(param, "IhOTiTyMLDNNLFuP");
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+ System.out.println(test);
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+
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+
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+ }
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+}
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xushengqiang