邮件发送通知

{
	"gameId": 21573,
	"serverId": "40107",
	"roleId": "2700033751",
	"appointMessage": {
		"mailTitle": "title",
		"language": "en",
		"sender": "sender",
		"mailContent": "content"
	},
	"mailMessageList": [{
		"mailTitle": "title",
		"language": "en",
		"sender": "sender",
		"mailContent": "content"
	}, {
		"mailTitle": "メールタイトル",
		"language": "ja",
		"sender": "メール送信者",
		"mailContent": "メールの内容"
	}],
	"timestamp": 1750125341047,
	"sign": "0d817e03ab22e1e6c883fd8ab6aa966f"
}

{
	"code": 0,
	"msg": "成功"
}

import cn.hutool.crypto.SecureUtil;
import cn.hutool.json.JSONObject;
import com.google.common.collect.Maps;

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

public class SignExample {

    public static String getMd5Sign(Map<String, Object> params, String appKey) {
        TreeMap<String, Object> sortedParams = new TreeMap(params);
        StringBuilder builder = new StringBuilder(512);
        sortedParams.forEach((k, v) -> {
            if (v != null) {
                builder.append(k).append("=").append(v).append("&");
            }
        });
        builder.append("key=").append(appKey);
        System.out.println(builder.toString());
        return SecureUtil.md5(builder.toString());
    }

    public static void main(String[] args) {
        JSONObject mail = new JSONObject();
        mail.putOpt("mailTitle", "title");
        mail.putOpt("mailContent", "content");
        mail.putOpt("sender", "sender");
        mail.putOpt("language", "en");

        Map<String, Object> params = Maps.newLinkedHashMap();
        params.put("gameId", 21573L);
        params.put("serverId", "40107");
        params.put("roleId", "2700033751");
        params.put("appointMessage", mail);
        params.put("timestamp", 1750125341047L);
        String appKey = "AaBbCcDdEeFfGgHh";
        System.out.println(String.format("邮件签名:%s", getMd5Sign(params, appKey)));
    }
}