JWT由jjwt-java解析，但在jwt.io調(diào)試器中顯示無效

我正在學(xué)習(xí)用于身份驗(yàn)證的JWS，并嘗試使用其中一個(gè)java庫(kù)jjwt來實(shí)現(xiàn)。我創(chuàng)建了一個(gè)JWT令牌字符串，并在其末尾添加了一個(gè)字符。令我驚訝的是，jjwt庫(kù)解析它時(shí)沒有拋出任何異常。我不知道庫(kù)或使用的算法是否有任何問題。我用jwt調(diào)試器進(jìn)行了同樣的測(cè)試，它按預(yù)期工作（顯示無效令牌）。

CODE :

public class TestJwt {
    // private static final String JWT_SECRET_KEY = "qdsfkjbwfjn323rwefwdef3kewrwerv5236v56d56w1xweec3wdn3i432oi";          // WORKING !!!
    // private static final String JWT_SECRET_KEY = "qdsfkjbwfjn323rwefwdef3kewrwerv52f36v56d56w1xweec3wdn3i432oi";         // WORKING !!!
    // private static final String JWT_SECRET_KEY = "qdsfkjbwfjn323rwefwdef3kewrwerv52f36345345weec3wdn3i432oi";            // WORKING !!!
    // private static final String JWT_SECRET_KEY = "qdsfkjbwfjn323rwefwdef3kewrwerv52f36345432oi";                         // NOT WORKING
    // private static final String JWT_SECRET_KEY = "qdsfkjbwfjn323rwefwdef3kewrwerv52f3632222222245y6454524524tef45432oi"; // NOT WORKING
    
    private static final String JWT_SECRET_KEY = "qdsfkjbwfjn323rwefwdef3kewrwerv5236v56d56w1xweec3wdn3i432oi"; // WORKING
    private static final Key key = Keys.hmacShaKeyFor(JWT_SECRET_KEY.getBytes());
    

    public static void main(String args[]) {
        
        String token = 
        Jwts.builder()
        
        .claim("name", "RANDOM")
        .claim("surname", "ANOTHER_RANDOM")
    
        .signWith(key)
        .compact();
        
        System.out.println("TOKEN BEFORE");
        System.out.println(token);
        
        // Adding single character to jwt and still working!!
        token = token+"7";
        
        System.out.println("TOKEN AFTER");
        System.out.println(token);
        
        
        Claims claims = Jwts.parserBuilder()
                .setSigningKey(key).build()             
                .parseClaimsJws(token).getBody();
        
        claims.forEach((k,v)->{
            System.out.println("________________________");
            System.out.println(k + " : "+v);
            
        });
        
        System.out.println("________________________"); 
    }
}

OUTPUT :

TOKEN BEFORE
eyJhbGciOiJIUzM4NCJ9.eyJuYW1lIjoiUkFORE9NIiwic3VybmFtZSI6IkFOT1RIRVJfUkFORE9NIn0.evntuAcZ0Urnv-5QniShmENKNBSzrjoxeNWN0uW-sy-qXzC-G2PJyi316m9LqQH9
TOKEN AFTER
eyJhbGciOiJIUzM4NCJ9.eyJuYW1lIjoiUkFORE9NIiwic3VybmFtZSI6IkFOT1RIRVJfUkFORE9NIn0.evntuAcZ0Urnv-5QniShmENKNBSzrjoxeNWN0uW-sy-qXzC-G2PJyi316m9LqQH97
________________________
name : RANDOM
________________________
surname : ANOTHER_RANDOM
________________________

我正在等待SignatureException。我用一些密鑰和隨機(jī)聲明進(jìn)行了測(cè)試，其中一些有效，但一些解析沒有問題（注釋掉了密鑰）。我應(yīng)該使用更復(fù)雜的密鑰嗎？