package com.ruoyi.integration.chengdujianguan.util;
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import java.io.IOException;
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import java.io.UnsupportedEncodingException;
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import java.security.GeneralSecurityException;
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import java.security.MessageDigest;
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import java.util.*;
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public class SignUtils {
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private static String UTF_8 = "UTF-8";
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/**
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* 使用<code>secret</code>对paramValues按以下算法进行签名： <br/>
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* uppercase(hex(sha1(secretkey1value1key2value2...secret))
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*
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* @param paramValues
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* 参数列表
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* @param secret
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* @return
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*/
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public static String sign(Map<String, String> paramValues, String secret) {
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return sign(paramValues, null, secret);
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}
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/**
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* 对paramValues进行签名，其中ignoreParamNames这些参数不参与签名
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*
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* @param paramValues
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* @param ignoreParamNames
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* @param secret
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* @return
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*/
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public static String sign(Map<String, String> paramValues, List<String> ignoreParamNames, String secret) {
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try {
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StringBuilder sb = new StringBuilder();
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List<String> paramNames = new ArrayList<String>(paramValues.size());
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paramNames.addAll(paramValues.keySet());
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if (ignoreParamNames != null && ignoreParamNames.size() > 0) {
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for (String ignoreParamName : ignoreParamNames) {
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paramNames.remove(ignoreParamName);
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}
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}
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Collections.sort(paramNames);
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sb.append(secret);
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for (String paramName : paramNames) {
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sb.append(paramName).append(paramValues.get(paramName));
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}
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sb.append(secret);
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System.out.println("原始的签名：" + sb.toString());
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byte[] sha1Digest = getSHA1Digest(sb.toString());
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System.out.println("sha-1的二进制码：" + String.valueOf(sha1Digest));
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return byte2hex(sha1Digest);
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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public static String utf8Encoding(String value, String sourceCharsetName) {
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try {
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return new String(value.getBytes(sourceCharsetName), UTF_8);
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} catch (UnsupportedEncodingException e) {
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throw new IllegalArgumentException(e);
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}
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}
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private static byte[] getSHA1Digest(String data) throws IOException {
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byte[] bytes = null;
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try {
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MessageDigest md = MessageDigest.getInstance("SHA-1");
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bytes = md.digest(data.getBytes(UTF_8));
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} catch (GeneralSecurityException gse) {
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throw new IOException(gse.getMessage()) ;
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}
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return bytes;
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}
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// private static byte[] getMD5Digest(String data) throws IOException {
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// byte[] bytes = null;
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// try {
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// MessageDigest md = MessageDigest.getInstance("MD5");
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// bytes = md.digest(data.getBytes(UTF_8));
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// } catch (GeneralSecurityException gse) {
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// throw new IOException(gse.getMessage());
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// }
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// return bytes;
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// }
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/**
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* 二进制转十六进制字符串
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*
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* @param bytes
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* @return
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*/
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private static String byte2hex(byte[] bytes) {
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StringBuilder sign = new StringBuilder();
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for (int i = 0; i < bytes.length; i++) {
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String hex = Integer.toHexString(bytes[i] & 0xFF);
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if (hex.length() == 1) {
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sign.append("0");
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}
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sign.append(hex.toUpperCase());
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}
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System.out.println("最终的签名：" + sign);
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return sign.toString();
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}
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public static String getUUID() {
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UUID uuid = UUID.randomUUID();
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return uuid.toString().toUpperCase();
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}
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}
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