JWT的生成、解析和校验

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public class JWTConfig {
	
	private static final String SING = "b2222c0c474c40f19a9cef972a406b8c";
	
	/**
	 * 生成Token
	 * @param map map
	 * @return String
	 */
	public static String getToken(Map<String, String> map) {
		//创建JWT
		Builder jwt = JWT.create();
		
		//设置储存数据
		map.forEach(jwt::withClaim);
		
		//设置过期时间: 7天
		Calendar instance = Calendar.getInstance();
		instance.add(Calendar.DATE, 7);
		jwt.withExpiresAt(instance.getTime());
		
		//加密
		return jwt.sign(Algorithm.HMAC256(SING));
	}
	
	/**
	 * 验证Token
	 * @param token token
	 * @return DecodedJWT
	 * @throws SignatureVerificationException 无效签名异常
	 * @throws TokenExpiredException token过期异常
	 */
	public static DecodedJWT verify(String token) throws SignatureVerificationException, TokenExpiredException {
		return JWT.require(Algorithm.HMAC256(SING)).build().verify(token);
	}
	
}