一站式网上办事大厅

// Java代码示例

import io.jsonwebtoken.Jwts;

import io.jsonwebtoken.SignatureAlgorithm;

import java.util.Date;

public class JwtUtil {

private static final String SECRET_KEY = "your-secret-key";

private static final long EXPIRATION = 86400000; // 24小时

public static String generateToken(String username) {

return Jwts.builder()

.setSubject(username)

.setExpiration(new Date(System.currentTimeMillis() + EXPIRATION))

.signWith(SignatureAlgorithm.HS512, SECRET_KEY)

.compact();

}

}