在Java中生成用于访问CR的身份验证令牌

import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;

public String generateToken(String username, String secretKey, long expirationTime) {
    Date now = new Date();
    Date expiryDate = new Date(now.getTime() + expirationTime);

    return Jwts.builder()
            .setSubject(username)
            .setIssuedAt(now)
            .setExpiration(expiryDate)
            .signWith(SignatureAlgorithm.HS512, secretKey)
            .compact();
}

String username = "your_username";
String secretKey = "your_secret_key";
long expirationTime = 3600000; // 1小时

String token = generateToken(username, secretKey, expirationTime);
System.out.println("生成的令牌：" + token);