在Java中为hasura授权生成JWT令牌

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

import java.util.Date;

public class JWTGenerator {
    
    public static String generateToken(String hasuraPayload) {
        // 设置密钥
        String secretKey = "your-secret-key";
        
        // 设置过期时间
        long expirationTimeInMillis = 86400000; // 24小时
        
        // 获取当前时间
        long nowMillis = System.currentTimeMillis();
        
        // 创建JWT构造器
        JwtBuilder builder = Jwts.builder()
                .setHeaderParam("typ", "JWT")
                .setIssuer("your-issuer")
                .setSubject("your-subject")
                .setAudience("your-audience")
                .claim("hasura", hasuraPayload)
                .setIssuedAt(new Date(nowMillis))
                .setExpiration(new Date(nowMillis + expirationTimeInMillis))
                .signWith(SignatureAlgorithm.HS256, secretKey);
        
        // 生成JWT令牌
        return builder.compact();
    }
    
    public static void main(String[] args) {
        String hasuraPayload = "{\"role\": \"user\"}"; // 设置hasura授权所需的有效载荷数据
        String jwtToken = generateToken(hasuraPayload);
        System.out.println(jwtToken);
    }
}