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@@ -0,0 +1,81 @@
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+package com.ruoyi.common.utils;
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+import java.net.URL;
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+import java.net.URLDecoder;
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+import java.security.MessageDigest;
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+import java.util.Formatter;
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+import java.util.Random;
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+
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+public class DingDing {
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+ /**
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+ * 计算dd.config的签名参数
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+ *
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+ * @param jsticket 通过微应用appKey获取的jsticket
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+ * @param nonceStr 自定义固定字符串
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+ * @param timeStamp 当前时间戳
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+ * @param url 调用dd.config的当前页面URL
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+ * @return
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+ * @throws Exception
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+ */
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+ public static String sign(String jsticket, String nonceStr, long timeStamp, String url) throws Exception {
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+ String plain = "jsapi_ticket=" + jsticket + "&noncestr=" + nonceStr + "×tamp=" + String.valueOf(timeStamp)
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+ + "&url=" + decodeUrl(url);
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+ try {
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+ MessageDigest sha1 = MessageDigest.getInstance("SHA-256");
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+ sha1.reset();
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+ sha1.update(plain.getBytes("UTF-8"));
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+ return byteToHex(sha1.digest());
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+ } catch (Exception e) {
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+ throw new Exception(e.getMessage());
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+ }
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+ }
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+
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+ // 字节数组转化成十六进制字符串
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+ private static String byteToHex(final byte[] hash) {
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+ Formatter formatter = new Formatter();
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+ for (byte b : hash) {
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+ formatter.format("%02x", b);
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+ }
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+ String result = formatter.toString();
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+ formatter.close();
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+ return result;
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+ }
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+
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+ /**
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+ * 因为ios端上传递的url是encode过的，android是原始的url。开发者使用的也是原始url,
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+ * 所以需要把参数进行一般urlDecode
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+ *
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+ * @param url
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+ * @return
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+ * @throws Exception
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+ */
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+ private static String decodeUrl(String url) throws Exception {
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+ URL urler = new URL(url);
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+ StringBuilder urlBuffer = new StringBuilder();
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+ urlBuffer.append(urler.getProtocol());
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+ urlBuffer.append(":");
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+ if (urler.getAuthority() != null && urler.getAuthority().length() > 0) {
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+ urlBuffer.append("//");
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+ urlBuffer.append(urler.getAuthority());
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+ }
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+ if (urler.getPath() != null) {
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+ urlBuffer.append(urler.getPath());
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+ }
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+ if (urler.getQuery() != null) {
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+ urlBuffer.append('?');
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+ urlBuffer.append(URLDecoder.decode(urler.getQuery(), "utf-8"));
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+ }
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+ return urlBuffer.toString();
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+ }
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+
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+ public static String getRandomStr(int count) {
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+ String base = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
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+ Random random = new Random();
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+ StringBuffer sb = new StringBuffer();
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+ for (int i = 0; i < count; i++) {
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+ int number = random.nextInt(base.length());
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+ sb.append(base.charAt(number));
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+ }
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+ return sb.toString();
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+ }
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+
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+}
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