org.macrocloud.kernel.auth.utils.JwtUtil Maven / Gradle / Ivy

Go to download
package org.macrocloud.kernel.auth.utils;

import io.jsonwebtoken.Claims;
import io.jsonwebtoken.ExpiredJwtException;
import io.jsonwebtoken.Jwts;

import org.macrocloud.kernel.auth.exception.SecureException;
import org.springframework.util.StringUtils;

import java.nio.charset.StandardCharsets;
import java.util.Base64;
import java.util.Date;

/**
 * Jwt工具类
 */
public class JwtUtil {

    /**
     * token基础配置
     */
    public static String BEARER = "bearer";
    public static Integer AUTH_LENGTH = 7;

    /**
     * token保存至redis的key
     */
    public static final String TOKEN_CACHE = "macrocloud:token";
    public static final String TOKEN_KEY = "token:state:";
    /**
     * refreshToken 保存至redis的key
     */
    public static final String REFRESH_TOKEN_CACHE = "macrocloud:refreshToken";
    public static final String REFRESH_TOKEN_KEY = "refreshToken:state:";

    /**
     * token签名
     */
    private static String signKey = "macrocloudisapoweddsdsdsfsdffffffffffssssssssrfulmicroservicearchitectureupgradedandoptimizedfromacommercialaaaproject";

    /**
     * 签名加密
     */
    public static String getBase64Security() {
        return Base64.getEncoder().encodeToString(signKey.getBytes(StandardCharsets.UTF_8));
    }

    /**
     * 获取请求传递的token串
     *
     * @param auth token
     * @return String
     */
    public static String getToken(String auth) {
        if ((auth != null) && (auth.length() > AUTH_LENGTH)) {
            String headStr = auth.substring(0, 6).toLowerCase();
            if (headStr.compareTo(BEARER) == 0) {
                auth = auth.substring(7);
            }
            return auth;
        }
        return null;
    }

    /**
     * 解析jsonWebToken
     *
     * @param jsonWebToken token串
     * @return Claims
     */
    public static Claims parseJWT(String jsonWebToken) {
        try {
            return Jwts.parserBuilder()
                    .setSigningKey(Base64.getDecoder().decode(getBase64Security())).build()
                    .parseClaimsJws(jsonWebToken).getBody();
        } catch (Exception ex) {
            ex.printStackTrace();
            return null;
        }
    }

    public static Boolean isTokenExpired(String jsonWebToken) {
		Claims claims = parseJWT(jsonWebToken);
		Date expiration = claims.getExpiration();
		//和当前时间进行对比来判断是否过期
		return new Date(System.currentTimeMillis()).after(expiration);
	}
}