授权token示例代码（JAVA）

import org.apache.commons.codec.binary.Base64;

import java.nio.charset.Charset;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Date;

/***
 @description:*token生成demo
 @author: *
 @createDate: 2023/4/21*
 @version: 1.0
 */
public class TestOauth {
    private static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");
    private static final String DEFAULT_HASH_ALGORITHM = "SHA-1";

    /**
     * token
     *
     * @param appId
     * @param appKey
     * @return
     */
    public static String getToken(String appId, String appKey) {
        Integer timestamp = getSecondTimestamp();
        String str = appId + "," + timestamp + ","
                + signature(appId, appKey, timestamp);
        String token = Base64.encodeBase64String(str.getBytes());
        return token;
    }

    /**
     * 签名串
     *
     * @param appId
     * @param appKey
     * @param timestamp
     * @return
     */
    public static String signature(String appId, String appKey, Integer timestamp) {
        return getDigest(appId + appKey + timestamp,DEFAULT_HASH_ALGORITHM);
    }

    /**
     * 时间戳（精确到秒）
     *
     * @return
     */
    private static Integer getSecondTimestamp() {
        String timestamp = String
                .valueOf(getSysdate().getTime() / 1000);
        return Integer.valueOf(timestamp);
    }

    public static Date getSysdate() {
        return new Date((System.currentTimeMillis() / 1000) * 1000);
    }

    public static String getDigest(String input, String algorithm) {
        String result = "";
        try {
            MessageDigest md = MessageDigest.getInstance(algorithm);
            byte[] src = input.getBytes(DEFAULT_CHARSET);
            byte[] digest = md.digest(src);
            result = toHexString(digest);
        } catch (NoSuchAlgorithmException e) {
            result = "";
        }
        return result;
    }


    public static String toHexString(byte[] bytes) {
        StringBuilder builder = new StringBuilder();
        for (int i = 0; i < bytes.length; i++) {
            int val = bytes[i] & 0xFF;
            if (val < 0x10) {
                builder.append("0");
            }
            builder.append(Integer.toString(val, 16));
        }
        return builder.toString();
    }

    public static void main(String[] args) {
        String getToken = getToken("appId", "appKey");
        System.out.println(getToken);
    }
}