1) 取本次请求的全部参数（不含 sign 自身）；
2) 按参数名 ASCII 升序排序，拼接成 k1=v1&k2=v2&…；
3) 末尾追加 &key=你的AppKey；
4) 对整串做 MD5 后转大写，即得 sign。

{
    "ok": 1,
    "msg": "已新增",
    "id": 12,
    "wstype": 1,
    "type_name": "作品自愿登记代理委托书",
    "bqj": 99,
    "bq_name": "中国版权保护中心",
    "zhuquanrenstr": "王阿红",
    "file_jpg_url": "https:\/\/f.muzhiyun.com\/d1sd1dlijianhua3a8f0c2e1b4d5e6f7a8b9c0d1e2f3.jpg",
    "qianzi_url": "",
    "shenhe": 0,
    "exptime": "2026-12-31"
}

{
    "ok": 0,
    "msg": "请选择文书类型【wstype】"
}

{
    "ok": 0,
    "msg": "余额不足，且无可用套餐，请充值后重试。"
}

{
    "ok": 0,
    "msg": "接口【知产文书配置接口】已停用，暂停调用，请联系管理员。"
}

缺少必要的参数【appid、sendtime、sign】请详看开发文档。
AppID不存在，请联系产品经理进行业务开通。
sendtime不是10位的数字。
时间戳超时，请重新请求。
签名校验失败。
余额不足，请充值后重试。
接口【XXX】已停用，暂停调用，请联系管理员。

curl -X POST "https://leikuang.muzhiyun.com/api/wenshuset.do" \
  -H "Content-Type: application/json" \
  -d &#039;{"appid":"你的AppID", "sendtime":"<当前时间戳>", "sign":"<按签名算法计算>", "appid":"muzhiyun","sendtime":"1790784000","id":"12","day002":"2026-12-31","day001":"2026-01-01","text":"{\"xmz\":\"我的作品\",\"day\":\"2026-01-01\"}","zpm":"{\"show\":1,\"size\":22,\"x\":340,\"y\":520}","zzr":"{\"show\":1,\"size\":22,\"x\":120,\"y\":230}","zhengjianhao":"{\"show\":1,\"size\":22,\"x\":120,\"y\":340}","xingming":"{\"show\":1,\"size\":22,\"x\":120,\"y\":300}","qm":"{\"show\":1,\"size\":60,\"x\":300,\"y\":520}","day":"{\"show\":1,\"size\":22,\"x\":120,\"y\":430}","xmz":"{\"show\":1,\"size\":22,\"x\":120,\"y\":280}","qianzi":"https:\/\/x.com\/qz.png","file_jpg":"https:\/\/x.com\/bg.png","exptime":"2026-12-31","qiyong":"1","zuozhe_arr":"[{\"name\":\"李明\",\"idcard\":\"110101199001015678\"}]","zhuquanren_arr":"[{\"name\":\"王阿红\",\"idcard\":\"110101199001011234\"}]","bqj":"99","wstype":"1","act":"save" }'

<?php
$appId  = "你的AppID";      // 没有则填 muzhiyun
$appKey = "你的AppKey";
$url    = "https://leikuang.muzhiyun.com/api/wenshuset.do";

$params = [
    &#039;appid' => 'muzhiyun',
    &#039;sendtime' => '1790784000',
    &#039;id' => '12',
    &#039;day002' => '2026-12-31',
    &#039;day001' => '2026-01-01',
    &#039;text' => '{"xmz":"我的作品","day":"2026-01-01"}',
    &#039;zpm' => '{"show":1,"size":22,"x":340,"y":520}',
    &#039;zzr' => '{"show":1,"size":22,"x":120,"y":230}',
    &#039;zhengjianhao' => '{"show":1,"size":22,"x":120,"y":340}',
    &#039;xingming' => '{"show":1,"size":22,"x":120,"y":300}',
    &#039;qm' => '{"show":1,"size":60,"x":300,"y":520}',
    &#039;day' => '{"show":1,"size":22,"x":120,"y":430}',
    &#039;xmz' => '{"show":1,"size":22,"x":120,"y":280}',
    &#039;qianzi' => 'https://x.com/qz.png',
    &#039;file_jpg' => 'https://x.com/bg.png',
    &#039;exptime' => '2026-12-31',
    &#039;qiyong' => '1',
    &#039;zuozhe_arr' => '[{"name":"李明","idcard":"110101199001015678"}]',
    &#039;zhuquanren_arr' => '[{"name":"王阿红","idcard":"110101199001011234"}]',
    &#039;bqj' => '99',
    &#039;wstype' => '1',
    &#039;act' => 'save',
];
// 以下三项由代码自动补，无需手填
$params["appid"]    = $appId;
$params["sendtime"] = (string)time();
ksort($params);
$src = &#039;';
foreach($params as $k=>$v) $src .= $k.&#039;='.$v.'&';
$src .= &#039;key='.$appKey;
$params["sign"] = strtoupper(md5($src));

$ch = curl_init();
curl_setopt_array($ch, [
    CURLOPT_URL            => $url,
    CURLOPT_POST           => true,
    CURLOPT_HTTPHEADER     => [&#039;Content-Type: application/json'],
    CURLOPT_POSTFIELDS     => json_encode($params, JSON_UNESCAPED_UNICODE),
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_TIMEOUT        => 30,
]);

$resp = curl_exec($ch);
curl_close($ch);
echo $resp;

import time, hashlib, json, urllib.request

APP_ID  = "你的AppID"      # 没有则填 muzhiyun
APP_KEY = "你的AppKey"
URL     = "https://leikuang.muzhiyun.com/api/wenshuset.do"

params = {
    "appid": "muzhiyun",
    "sendtime": "1790784000",
    "id": "12",
    "day002": "2026-12-31",
    "day001": "2026-01-01",
    "text": "{"xmz":"我的作品","day":"2026-01-01"}",
    "zpm": "{"show":1,"size":22,"x":340,"y":520}",
    "zzr": "{"show":1,"size":22,"x":120,"y":230}",
    "zhengjianhao": "{"show":1,"size":22,"x":120,"y":340}",
    "xingming": "{"show":1,"size":22,"x":120,"y":300}",
    "qm": "{"show":1,"size":60,"x":300,"y":520}",
    "day": "{"show":1,"size":22,"x":120,"y":430}",
    "xmz": "{"show":1,"size":22,"x":120,"y":280}",
    "qianzi": "https://x.com/qz.png",
    "file_jpg": "https://x.com/bg.png",
    "exptime": "2026-12-31",
    "qiyong": "1",
    "zuozhe_arr": "[{"name":"李明","idcard":"110101199001015678"}]",
    "zhuquanren_arr": "[{"name":"王阿红","idcard":"110101199001011234"}]",
    "bqj": "99",
    "wstype": "1",
    "act": "save",
}
params["appid"]    = APP_ID
params["sendtime"] = str(int(time.time()))
params = dict(sorted(params.items()))  # 参数名升序
sign_src = "&".join(f"{k}={v}" for k, v in params.items()) + "&key=" + APP_KEY
params["sign"] = hashlib.md5(sign_src.encode("utf-8")).hexdigest().upper()

req = urllib.request.Request(
    URL,
    data=json.dumps(params).encode("utf-8"),
    headers={"Content-Type": "application/json"},
    method="POST",
)
print(urllib.request.urlopen(req, timeout=30).read().decode("utf-8"))

const url = "https://leikuang.muzhiyun.com/api/wenshuset.do";
const params = {
  'appid': 'muzhiyun',
  'sendtime': '1790784000',
  'id': '12',
  'day002': '2026-12-31',
  'day001': '2026-01-01',
  'text': '{"xmz":"我的作品","day":"2026-01-01"}',
  'zpm': '{"show":1,"size":22,"x":340,"y":520}',
  'zzr': '{"show":1,"size":22,"x":120,"y":230}',
  'zhengjianhao': '{"show":1,"size":22,"x":120,"y":340}',
  'xingming': '{"show":1,"size":22,"x":120,"y":300}',
  'qm': '{"show":1,"size":60,"x":300,"y":520}',
  'day': '{"show":1,"size":22,"x":120,"y":430}',
  'xmz': '{"show":1,"size":22,"x":120,"y":280}',
  'qianzi': 'https://x.com/qz.png',
  'file_jpg': 'https://x.com/bg.png',
  'exptime': '2026-12-31',
  'qiyong': '1',
  'zuozhe_arr': '[{"name":"李明","idcard":"110101199001015678"}]',
  'zhuquanren_arr': '[{"name":"王阿红","idcard":"110101199001011234"}]',
  'bqj': '99',
  'wstype': '1',
  'act': 'save',
  appid: "你的AppID",
  sendtime: String(Math.floor(Date.now()/1000)),
  // sign: 按上文「签名算法」在前端算 md5(ksort(k=v&…)&key=AppKey) 后填入
};
fetch(url, {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify(params),
}).then(r => r.json()).then(console.log);