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电商系统-用户认证（三）基于公钥解析JWT令牌

article 2025/1/31 6:04:58

一、基于私钥生成jwt令牌

步骤：
导入认证服务

将shangcheng_user_auth工程导入到项目中去，如下图
启动eureka，再启动认证服务

3）认证服务中创建测试类
public class CreateJwtTest {

    /***
     * 创建令牌测试
     */
    @Test
    public void testCreateToken(){
        //证书文件路径
        String key_location="shangcheng.jks";
        //秘钥库密码
        String key_password="shangcheng";
        //秘钥密码
        String keypwd = "shangcheng";
        //秘钥别名
        String alias = "shangcheng";

        //访问证书路径
        ClassPathResource resource = new ClassPathResource(key_location);

        //创建秘钥工厂
        KeyStoreKeyFactory keyStoreKeyFactory = new KeyStoreKeyFactory(resource,key_password.toCharArray());

        //读取秘钥对(公钥、私钥)
        KeyPair keyPair = keyStoreKeyFactory.getKeyPair(alias,keypwd.toCharArray());

        //获取私钥
        RSAPrivateKey rsaPrivate = (RSAPrivateKey) keyPair.getPrivate();

        //定义Payload
        Map<String, Object> tokenMap = new HashMap<>();
        tokenMap.put("id", "1");
        tokenMap.put("name", "itheima");
        tokenMap.put("roles", "ROLE_VIP,ROLE_USER");

        //生成Jwt令牌
        Jwt jwt = JwtHelper.encode(JSON.toJSONString(tokenMap), new RsaSigner(rsaPrivate));

        //取出令牌
        String encoded = jwt.getEncoded();
        System.out.println(encoded);
    }
}

二、基于公钥解析jwt令牌

上面创建令牌后，我们可以对JWT令牌进行解析，这里解析需要用到公钥，我们可以将之前生成的公钥public.key拷贝出来用字符串变量token存储，然后通过公钥解密。

在shangcheng-user-oauth创建测试类com.shangcheng.token.ParseJwtTest实现解析校验令牌数据，代码如下：

public class ParseJwtTest {

    /***
     * 校验令牌
     */
    @Test
    public void testParseToken(){
        //令牌
        String token = "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJyb2xlcyI6IlJPTEVfVklQLFJPTEVfVVNFUiIsIm5hbWUiOiJpdGhlaW1hIiwiaWQiOiIxIn0.IR9Qu9ZqYZ2gU2qgAziyT38UhEeL4Oi69ko-dzC_P9-Vjz40hwZDqxl8wZ-W2WAw1eWGIHV1EYDjg0-eilogJZ5UikyWw1bewXCpvlM-ZRtYQQqHFTlfDiVcFetyTayaskwa-x_BVS4pTWAskiaIKbKR4KcME2E5o1rEek-3YPkqAiZ6WP1UOmpaCJDaaFSdninqG0gzSCuGvLuG40x0Ngpfk7mPOecsIi5cbJElpdYUsCr9oXc53ROyfvYpHjzV7c2D5eIZu3leUPXRvvVAPJFEcSBiisxUSEeiGpmuQhaFZd1g-yJ1WQrixFvehMeLX2XU6W1nlL5ARTpQf_Jjiw";

        //公钥
        String publickey = "-----BEGIN PUBLIC KEY-----MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvFsEiaLvij9C1Mz+oyAmt47whAaRkRu/8kePM+X8760UGU0RMwGti6Z9y3LQ0RvK6I0brXmbGB/RsN38PVnhcP8ZfxGUH26kX0RK+tlrxcrG+HkPYOH4XPAL8Q1lu1n9x3tLcIPxq8ZZtuIyKYEmoLKyMsvTviG5flTpDprT25unWgE4md1kthRWXOnfWHATVY7Y/r4obiOL1mS5bEa/iNKotQNnvIAKtjBM4RlIDWMa6dmz+lHtLtqDD2LF1qwoiSIHI75LQZ/CNYaHCfZSxtOydpNKq8eb1/PGiLNolD4La2zf0/1dlcr5mkesV570NxRmU1tFm8Zd3MZlZmyv9QIDAQAB-----END PUBLIC KEY-----";

        //校验Jwt
        Jwt jwt = JwtHelper.decodeAndVerify(token, new RsaVerifier(publickey));

        //获取Jwt原始内容
        String claims = jwt.getClaims();
        System.out.println(claims);
        //jwt令牌
        String encoded = jwt.getEncoded();
        System.out.println(encoded);
    }
}