eleme.openapi.h5.sdk.pay.utils.PaySignUtil Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of eleme-openapi-h5-sdk Show documentation
There is a newer version: 1.0.11-RELEASE
package eleme.openapi.h5.sdk.pay.utils;

import java.util.HashMap;
import java.util.Map;
import java.util.TreeMap;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.TypeReference;

import com.google.common.base.Joiner;
import com.google.common.collect.Maps;
import org.apache.commons.lang3.RandomStringUtils;
import org.apache.commons.lang3.StringUtils;

/**
 * 支付签约工具类
 */
public class PaySignUtil {

    /**
     * 支付验签
     *
     * @param content        请求内容
     * @param elemePublicKey 饿了么公钥
     * @return 验签结果
     */
    public static boolean verify(String content, String elemePublicKey) {
        try {
            Map contentMap = JSONObject.parseObject(content,
                new TypeReference>() {});
            String sign = contentMap.get("sign");
            // sign和内容为空的字段不参与签名
            contentMap = Maps.filterEntries(contentMap,
                p -> StringUtils.isNotBlank(p.getKey()) && StringUtils.isNotBlank(p.getValue()) && !StringUtils.equals(
                    "sign", p.getKey()));
            String signContent = Joiner.on("&").withKeyValueSeparator("=").join(contentMap);
            return RSA2Util.rsa256Verify(signContent, sign, elemePublicKey, "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 对业务结果加签并生成最终响应结果
     *
     * @param obj        加签对象
     * @param privateKey 机构私钥
     * @return 加签后的内容
     */
    public static String sign(Object obj, String privateKey) {
        try {
            Map contentMap = JSONObject.parseObject(JSON.toJSONString(obj),
                new TypeReference>() {});
            // 生成随机串
            String nonceStr = RandomStringUtils.randomAlphabetic(32);
            contentMap.put("nonceStr", nonceStr);
            // 生成签名
            contentMap = Maps.filterEntries(contentMap,
                p -> StringUtils.isNotBlank(p.getKey()) && StringUtils.isNotBlank(p.getValue()));
            String signContent = Joiner.on("&").withKeyValueSeparator("=").join(contentMap);
            String sign = RSA2Util.rsa256Sign(signContent, privateKey, "utf-8");
            contentMap.put("sign", sign);
            return JSON.toJSONString(contentMap);
        } catch (Exception e) {
            e.printStackTrace();
            JSONObject jsonObject = new JSONObject();
            jsonObject.put("returnCode", "FAIL");
            jsonObject.put("returnMsg", "加签失败");
            return JSON.toJSONString(jsonObject);
        }
    }
}