SHA1簽名工具類java package com.net.util;import java.security.MessageDigest; import java.util.Iterator; import java.util.Map; import java.util.Random; import java.util.Set; import java.util.SortedMap;/* '============================================================================ 'api說明： 'createSHA1Sign創建簽名SHA1 'getSha1()Sha1簽名 '============================================================================ '*/ public class Sha1Util {public static String getNonceStr() {Random random = new Random();return MD5Util.MD5Encode(String.valueOf(random.nextInt(10000)), "UTF-8");}public static String getTimeStamp() {return String.valueOf(System.currentTimeMillis() / 1000);}//創建簽名SHA1public static String createSHA1Sign(SortedMap<String, String> signParams) throws Exception {StringBuffer sb = new StringBuffer();Set es = signParams.entrySet();Iterator it = es.iterator();while (it.hasNext()) {Map.Entry entry = (Map.Entry) it.next();String k = (String) entry.getKey();String v = (String) entry.getValue();sb.append(k + "=" + v + "&");//要采用URLENCODER的原始值！ }String params = sb.substring(0, sb.lastIndexOf("&")); // System.out.println("sha1之前:" + params); // System.out.println("SHA1簽名為："+getSha1(params));return getSha1(params);}//Sha1簽名public static String getSha1(String str) {if (str == null || str.length() == 0) {return null;}char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9','a', 'b', 'c', 'd', 'e', 'f' };try {MessageDigest mdTemp = MessageDigest.getInstance("SHA1");mdTemp.update(str.getBytes("UTF-8"));byte[] md = mdTemp.digest();int j = md.length;char buf[] = new char[j * 2];int k = 0;for (int i = 0; i < j; i++) {byte byte0 = md[i];buf[k++] = hexDigits[byte0 >>> 4 & 0xf];buf[k++] = hexDigits[byte0 & 0xf];}return new String(buf);} catch (Exception e) {return null;}} }

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posted on 2017-04-22 19:54 <&nbsp/> 閱讀(...) 評論(...) 編輯 收藏

轉載于:https://www.cnblogs.com/zhangdiIT/p/6748959.html

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