feat(utils): 添加MD5签名生成工具

- 实现了基于Java规则的MD5签名计算方法
- 支持参数映射排序与URL编码处理
- 添加了空格去除和特殊字符处理逻辑
- 集成了时间戳、随机字符串生成功能
- 提供完整的curl请求示例输出
- 支持复杂对象序列化为JSON请求体
- 实现了多层级参数拼接与签名验证

generateSign.py

@@ -0,0 +1,97 @@
+import json
+import time
+import uuid
+import urllib.parse
+import hashlib
+
+
+# ===================  MD5签名计算  ===================
+def calculate_md5(param, secret_key):
+    # Java 规则：MD5(secretKey + param)
+    return hashlib.md5((secret_key + param).encode('utf-8')).hexdigest()
+
+
+def create_sign(param_map, secret_key):
+    sorted_keys = sorted(param_map.keys())
+    parts = []
+
+    for key in sorted_keys:
+        val = param_map[key]
+
+        if val is None:
+            parts.append(f"{key}=")
+            continue
+
+        if isinstance(val, list):
+            for item in val:
+                encoded_val = urllib.parse.quote(str(item), encoding='utf-8')
+                parts.append(f"{key}={encoded_val}")
+            continue
+
+        val_str = str(val)
+
+        if key != "REQUEST_BODY_CONTENT":
+            val_str = urllib.parse.quote(val_str, encoding='utf-8')
+
+        parts.append(f"{key}={val_str}")
+
+    param = "&".join(parts)
+
+    # Java逻辑:  .replaceAll("\\s", "")
+    param = "".join(param.split())
+
+    print("参数明文 param:", param)
+
+    sign = calculate_md5(param, secret_key)
+    print("生成签名 sign:", sign)
+
+    return sign
+
+
+# ===================  Python 主程序 ===================
+if __name__ == '__main__':
+    platform_ifc_system_code = "9f5bbb73710c4a6a8923c278ffa00d50"
+
+    systemCode = "57395d2bc668496c9c57d8f2b19bd516"
+
+    appId = "57395d2bc668496c9c57d8f2b19bd516"
+    secret_key = "lC4&NvBQcnvgH@i+io=k#K3HO5aCiuHD"
+
+    ts = str(int(time.time() * 1000))
+    randomString = uuid.uuid4().hex
+
+    selector = {
+        "searchKeys": ["b353614a47e2425a8a8885d270267407", "3DC1B33E1B5B431E99FA163BF9E86E6A", "9cb864213c6f48ceaf90e98e7ca375e9"],
+        "userType": "0",
+        "hasCascade": True
+    }
+
+    request_body_json = json.dumps(selector, separators=(',', ':'))
+
+    param_map = {
+        "systemCode": systemCode,
+        "timestamp": ts,
+        "nonce": randomString,
+        "REQUEST_BODY_CONTENT": request_body_json
+    }
+
+    sign = create_sign(param_map, secret_key)
+
+    ifcUrl = "https://dpc.cet.cnooc/prod-api/cenertech-interface-center/IFC2"
+    apiPath = "/userListByDeptSearch"
+
+    fullUrl = f"{ifcUrl}/{platform_ifc_system_code}{apiPath}"
+
+    curl = f"""
+curl -X POST "{fullUrl}" \\
+  -H "Content-Type: application/json" \\
+  -H "systemCode: {systemCode}" \\
+  -H "timestamp: {ts}" \\
+  -H "nonce: {randomString}" \\
+  -H "sign: {sign}" \\
+  -H "App-Id: {appId}" \\
+  -d '{request_body_json}'
+"""
+
+    print("\n===== 最终 curl 请求 =====\n")
+    print(curl)