48 lines
1.3 KiB
Plaintext
48 lines
1.3 KiB
Plaintext
package com.ifish.netease;
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import java.security.MessageDigest;
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/**
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* SHA1(AppSecret + Nonce + CurTime),三个参数拼接的字符串，进行SHA1哈希计算，转化成16进制字符(String，小写)
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* @author Administrator
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*
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*/
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public class CheckSumBuilder {
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// 计算并获取CheckSum
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public static String getCheckSum(String appSecret, String nonce, String curTime) {
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return encode("sha1", appSecret + nonce + curTime);
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}
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// 计算并获取md5值
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public static String getMD5(String requestBody) {
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return encode("md5", requestBody);
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}
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private static String encode(String algorithm, String value) {
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if (value == null) {
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return null;
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}
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try {
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MessageDigest messageDigest
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= MessageDigest.getInstance(algorithm);
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messageDigest.update(value.getBytes());
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return getFormattedText(messageDigest.digest());
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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}
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private static String getFormattedText(byte[] bytes) {
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int len = bytes.length;
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StringBuilder buf = new StringBuilder(len * 2);
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for (int j = 0; j < len; j++) {
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buf.append(HEX_DIGITS[(bytes[j] >> 4) & 0x0f]);
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buf.append(HEX_DIGITS[bytes[j] & 0x0f]);
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}
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return buf.toString();
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}
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private static final char[] HEX_DIGITS = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
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} |