{ "alg": "RS256", "d": "P0a66ibq23zxVl-jYXMNw0ZiudUhsLAe3i8rDs4FLvONIXk9l4GxqvdWlJuA_obR0OHMMWNhpLLdOKz4MTWXuO95BboHMhMrkEJJyVUr61BIVq1RPIBUQanLH_iFcGoyCLbSZ9kc19hzp3BW2ndsSFtBzvbTO9fcn3qfYCPqYjwOu-u1KN7afjwIp445Y-2M3s4TPnbTljfLJrYyBpskIYoN_JiTwWphlXTUp3KkvuYNDBYfCFX7C-IKXUM0IwMuEz_ynh6z_vO4-QXeXrJr_zjRPq6IBi-UmE32ABArnvielaiamK59M479jsJD2NAMR3v2pUnalfMYMd0QpQKavQ", "dp": "Jw38SA6YYwa3wg7oS4ow02v6RIbQcPHk9AO9OgjYDMK89qn2TT4A-3ex31egEhv2Hnj42n1YpAmP42Q1b-fxcSth1NtnlzVswYiH0sZU0RAms5F--NhPfOPl_Nxh940wsBn-vO43dxuMSFTjMX7C8iN-BwEANEuvXhlFy31tL-s", "dq": "WJlhrNdo8Pb0CImwHvfiQhtppvg0WsjgZUMoeDh_3gTX3gvgNPTG6u0DFKZZXFPhNYv0fPYulOf8SGbRH0Xr9Hn2jKVtRmltT5ayim5TPm1-pb_96u5t_mCBrrsLYnSgwqVCg1Sdx-UMJWjidnmQpKEvioZSpbDyMI6KSDDmtzU", "e": "AQAB", "ext": true, "key_ops": [ "sign" ], "kty": "RSA", "n": "txeBjjyVHAi2X03MmK51kBgHjXrK5G-wI4NvmMA8XgYjZnf3pPuWmUOuU4Q1ZOnyWrMaY2Evuflup1aa809wqlhI5KpAWOk3IjeZL8JNMQQvB60gtqtBZD0FULPoy31BdVwXBRM6X0jvqSZwJJnn3cUxrA_qmawbAYXiXJhGjZPgH3dk9_a2Y0TFjc9y2H79EGcK7dPmeeLBgtowMjF9-vLXpF1xuuvxMdG4KO_EMzsXdTADEFf6KwXW0LRcDKdJaiI-qEwP1LoETyZL-BU_TOiTZbe8BMmlH7dCTxc0_1GZwiSSvR0OfRel5pxjh8aZBpC7DPcNDsFxergyiSswmw", "p": "4QNWn-YVaq2riCaVFiJC97arjFiaeOg1myVdUz_ZmMM02hlc6EN5_YolePSqoXSEHfT1Bxf-aSZ10LIVBdCiPqD7WMRZFy5WiF4Dc0EN30x9qhQWScHB3emxvjPIAT3IcMSU9lJVgXOv4LLc7CvwznmrHtVKDLxRgpGbsAr_d7c", "q": "0E5EcK1xvtlH5U8ksg6A3ieLITd5NVw-ixg3IljrPXSpVxHda9YxpSvHjYuotFh5F9MN9W0lXFlQktK_LAcenQsOvuU6dCnzBfqQePDjutV_b_wQ9j2h1g2ANXTrtVEmibim7mL1AvlXkoBMHCO8R7AHTsTIuPWJ2rOuQIStpj0", "qi": "WSzNpWwLEwinJaSzQ9h4xETslFAmqg7gT2gar0JWYTcy3UM7Gfns8gNUMLMl4SCngM9LiOE4n7YyRN9PElJ1te0gdruAY68_9UzML7XqyUKRxr0M99qmn0IqCYUgnFG_MKGgyikjQzyjAvnR3IuQ5UNRp0pFd2o4vPLz10v_imM" } 生成RSAPrivateCrtKey

要从JSON字符串中生成`RSAPrivateCrtKey`对象，您可以使用以下Java代码：

import com.google.gson.JsonObject;
import com.google.gson.JsonParser;

import java.io.StringReader;
import java.math.BigInteger;
import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.interfaces.RSAPrivateCrtKey;
import java.security.spec.RSAPrivateCrtKeySpec;
import java.util.Base64;

public class Main {
    public static void main(String[] args) throws Exception {
        // 假设您有一个JSON字符串，其中包含私钥信息
        String jsonString = "{\"alg\":\"RS256\",\"d\":\"P0a66ibq23zxVl-jYXMNw0ZiudUhsLAe3i8rDs4FLvONIXk9l4GxqvdWlJuA_obR0OHMMWNhpLLdOKz4MTWXuO95BboHMhMrkEJJyVUr61BIVq1RPIBUQanLH_iFcGoyCLbSZ9kc19hzp3BW2ndsSFtBzvbTO9fcn3qfYCPqYjwOu-u1KN7afjwIp445Y-2M3s4TPnbTljfLJrYyBpskIYoN_JiTwWphlXTUp3KkvuYNDBYfCFX7C-IKXUM0IwMuEz_ynh6z_vO4-QXeXrJr_zjRPq6IBi-UmE32ABArnvielaiamK59M479jsJD2NAMR3v2pUnalfMYMd0QpQKavQ\",\"dp\":\"Jw38SA6YYwa3wg7oS4ow02v6RIbQcPHk9AO9OgjYDMK89qn2TT4A-3ex31egEhv2Hnj42n1YpAmP42Q1b-fxcSth1NtnlzVswYiH0sZU0RAms5F--NhPfOPl_Nxh940wsBn-vO43dxuMSFTjMX7C8iN-BwEANEuvXhlFy31tL-s\",\"dq\":\"WJlhrNdo8Pb0CImwHvfiQhtppvg0WsjgZUMoeDh_3gTX3gvgNPTG6u0DFKZZXFPhNYv0fPYulOf8SGbRH0Xr9Hn2jKVtRmltT5ayim5TPm1-pb_96u5t_mCBrrsLYnSgwqVCg1Sdx-UMJWjidnmQpKEvioZSpbDyMI6KSDDmtzU\",\"e\":\"AQAB\",\"ext\":true,\"key_ops\":[\"sign\"],\"kty\":\"RSA\",\"n\":\"txeBjjyVHAi2X03MmK51kBgHjXrK5G-wI4NvmMA8XgYjZnf3pPuWmUOuU4Q1ZOnyWrMaY2Evuflup1aa809wqlhI5KpAWOk3IjeZL8JNMQQvB60gtqtBZD0FULPoy31BdVwXBRM6X0jvqSZwJJnn3cUxrA_qmawbAYXiXJhGjZPgH3dk9_a2Y0TFjc9y2H79EGcK7dPmeeLBgtowMjF9-vLXpF1xuuvxMdG4KO_EMzsXdTADEFf6KwXW0LRcDKdJaiI-qEwP1LoETyZL-BU_TOiTZbe8BMmlH7dCTxc0_1GZwiSSvR0OfRel5pxjh8aZBpC7DPcNDsFxergyiSswmw\",\"p\":\"4QNWn-YVaq2riCaVFiJC97arjFiaeOg1myVdUz_ZmMM02hlc6EN5_YolePSqoXSEHfT1Bxf-aSZ10LIVBdCiPqD7WMRZFy5WiF4Dc0EN30x9qhQWScHB3emxvjPIAT3IcMSU9lJVgXOv4LLc7CvwznmrHtVKDLxRgpGbsAr_d7c\",\"q\":\"0E5EcK1xvtlH5U8ksg6A3ieLITd5NVw-ixg3IljrPXSpVxHda9YxpSvHjYuotFh5F9MN9W0lXFlQktK_LAcenQsOvuU6dCnzBfqQePDjutV_b_wQ9j2h1g2ANXTrtVEmibim7mL1AvlXkoBMHCO8R7AHTsTIuPWJ2rOuQIStpj0\",\"qi\":\"WSzNpWwLEwinJaSzQ9h4xETslFAmqg7gT2gar0JWYTcy3UM7Gfns8gNUMLMl4SCngM9LiOE4n7YyRN9PElJ1te0gdruAY68_9UzML7XqyUKRxr0M99qmn0IqCYUgnFG_MKGgyikjQzyjAvnR3IuQ5UNRp0pFd2o4vPLz10v_imM\"}";

        // 使用JsonParser解析JSON字符串
        JsonParser parser = new JsonParser();
        JsonObject jsonObject = parser.parse(new StringReader(jsonString)).getAsJsonObject();

        // 获取私钥的各个参数并进行Base64解码
        String nValue = jsonObject.get("n").getAsString();
        String eValue = jsonObject.get("e").getAsString();
        String dValue = jsonObject.get("d").getAsString();
        String pValue = jsonObject.get("p").getAsString();
        String qValue = jsonObject.get("q").getAsString();
        String dpValue = jsonObject.get("dp").getAsString();
        String dqValue = jsonObject.get("dq").getAsString();
        String qiValue = jsonObject.get("qi").getAsString();

        byte[] nBytes = Base64.getUrlDecoder().decode(nValue);
        byte[] eBytes = Base64.getUrlDecoder().decode(eValue);
        byte[] dBytes = Base64.getUrlDecoder().decode(dValue);
        byte[] pBytes = Base64.getUrlDecoder().decode(pValue);
        byte[] qBytes = Base64.getUrlDecoder().decode(qValue);
        byte[] dpBytes = Base64.getUrlDecoder().decode(dpValue);
        byte[] dqBytes = Base64.getUrlDecoder().decode(dqValue);
        byte[] qiBytes = Base64.getUrlDecoder().decode(qiValue);

        // 使用各个参数生成RSAPrivateCrtKeySpec对象
        RSAPrivateCrtKeySpec keySpec = new RSAPrivateCrtKeySpec(
                new BigInteger(1, nBytes),
                new BigInteger(1, eBytes),
                new BigInteger(1, dBytes),
                new BigInteger(1, pBytes),
                new BigInteger(1, qBytes),
                new BigInteger(1, dpBytes),
                new BigInteger(1, dqBytes),
                new BigInteger(1, qiBytes)
        );

        // 使用KeyFactory和RSAPrivateCrtKeySpec生成RSAPrivateCrtKey对象
        KeyFactory keyFactory = KeyFactory.getInstance("RSA");
        RSAPrivateCrtKey privateKey = (RSAPrivateCrtKey) keyFactory.generatePrivate(keySpec);

        // 打印生成的RSAPrivateCrtKey对象
        System.out.println(privateKey);
    }
}

请注意，以上代码假设您已经导入了Gson库。如果没有导入，请根据您的构建工具和环境进行适当的导入。