zsElectric-boot/src/main/java/com/zsElectric/boot/common/util/electric/ChargingUtil.java

package com.zsElectric.boot.common.util.electric;

import cn.hutool.core.bean.BeanUtil;
import com.google.gson.Gson;
import com.google.gson.JsonObject;
import com.zsElectric.boot.common.constant.ConnectivityConstants;
import com.zsElectric.boot.common.util.AESCryptoUtils;
import com.zsElectric.boot.common.util.HmacMD5Util;
import com.zsElectric.boot.common.util.OkHttpUtil;
import com.zsElectric.boot.common.util.SequenceGenUtil;
import jakarta.annotation.Resource;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import java.util.HashMap;
import java.util.Map;
import java.util.Objects;

@Slf4j
@Component
public class ChargingUtil {

    @Resource
    private ElectricTokenManager tokenManager;
    @Resource
    private OkHttpUtil okHttpUtil;

    /**
     * 请求封装
     * @param url
     * @param queryParms
     * @param tokenRequired
     * @return
     */
    public JsonObject chargingRequest(String url, Map<String,Object> queryParms,boolean tokenRequired){
        Map<String, String> headers = new HashMap<>();
        if(tokenRequired){
            headers.put("Authorization", "Bearer " + tokenManager.getValidAccessToken());
        }
        try {
            RequestParmsEntity requestParms = new RequestParmsEntity();
            SequenceGenUtil.SequenceResult result = SequenceGenUtil.generate();

            requestParms
                    .setOperatorID(ConnectivityConstants.OPERATOR_ID)
                    .setData(AesCryptoUtil.encrypt(queryParms.toString(),ConnectivityConstants.PLATFORM_DATA_SECRET,
                            ConnectivityConstants.PLATFORM_DATA_SECRET_IV))
                    .setTimeStamp(result.getTimestamp())
                    .setSeq(result.getSequence())
                    .setSig(HmacMD5Util.genSign(requestParms.getOperatorID(),requestParms.getData(),requestParms.getTimeStamp(),requestParms.getSeq(),ConnectivityConstants.SIG_SECRET));

            JsonObject response = okHttpUtil.doPostForm(url, BeanUtil.beanToMap(requestParms), headers);

            if (Objects.isNull(response)) {
                log.error("调用第三方接口获取Token失败");
                return null;
            }
            return response;
        }catch (Exception e){
            throw new RuntimeException("调用第三方接口发生异常", e);
        }
    }

    /**
     * 响应解密
     * @param response
     * @return
     */
    public JsonObject responseDecode(JsonObject response){

        try {
            if (Objects.isNull(response)) {
                log.error("第三方接口响应数据为空");
                return null;
             }
            Gson gson = new Gson();
            ResponseParmsEntity responseParms = gson.fromJson(response, ResponseParmsEntity.class);
            String data = responseParms.getRet() + responseParms.getMsg() + responseParms.getData();
            boolean verify = HmacMD5Util.verify(data, ConnectivityConstants.PLATFORM_SIG_SECRET, responseParms.getSig());
            if (!verify) {
                log.error("第三方接口响应数据签名验证失败");
                return null;
            }
            if (responseParms.getRet() != 0){
                switch (responseParms.getRet()) {
                    case -1:
                        log.error("系统繁忙,此时请求方稍后重试");
                        break;
                    case 4001:
                        log.error("签名错误");
                        break;
                    case 4002:
                        log.error("Token错误");
                        break;
                    case 4003:
                        log.error("参数不合法,缺少必需的示例:OperatorID、Sig、TimeStamp、Data、Seq五个参数");
                        break;
                    case 4004:
                        log.error("请求的业务参数不合法,各接口定义自己的必须参数");
                        break;
                    case 500:
                        log.error("系统错误");
                        break;
                }
            }
            String decodeData = AesCryptoUtil.decrypt(responseParms.getData(), ConnectivityConstants.PLATFORM_DATA_SECRET,
                    ConnectivityConstants.PLATFORM_DATA_SECRET_IV);
            return gson.fromJson(decodeData, JsonObject.class);
        }catch (Exception e){
            throw new RuntimeException("第三方接口响应发生异常", e);
        }
    }
}