Java-token生成

1. 引入jar包

<dependency>
    <groupId>com.auth0</groupId>
    <artifactId>java-jwt</artifactId>
    <version>3.4.0</version>
</dependency>

2. 实现

public class JWTUtil {
    //过期时间15分钟
    private static final long EXPIRE_TIME = 15*60*1000;
    //token秘钥,设置的复杂点这里用一串uuid，并用HMAC256加密的
    private static final String TOKEN_SECRET = "JFKDJFKGFGFGIFG8R9589589";
    
    //生成token
    public static String generatorToken(String userName,Stringn userId) {
        //过期时间
        Date date = new Date(System.currentTimeMillis()+EXPIRE_TIME );
        //秘钥及加密算法
        Algorithm algorithm = Algorithm.HMAC256(TOKEN_SECRET);
        //设置头部信息
        Map<String,Object> header = new HashMap<String,Object>(2);
        header.put("type","JWT");
        header.put("alg","HS256");
        //附带用户信息，生成token
        return JWT.create()
            .withHeader(header)
            .withClaim("userName",userName)
            .withClaim("userId",userId)
            .withExpiresAt(date)
            .sign(algorithm);
    }
}