修复了已知的bug

Serein.Proto.HttpApi/QueryStringParser.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Serein.Proto.HttpApi
+{
+    internal class QueryStringParser
+    {
+        public static Dictionary<string, string> ParseQueryString(string query)
+        {
+            var result = new Dictionary<string, string>();
+
+            if (string.IsNullOrEmpty(query))
+                return result;
+
+            // 如果字符串以'?'开头，移除它
+            if (query.StartsWith("?"))
+                query = query.Substring(1);
+
+            // 拆分键值对
+            var pairs = query.Split('&');
+            foreach (var pair in pairs)
+            {
+                // 忽略空的键值对
+                if (string.IsNullOrEmpty(pair)) continue;
+
+                // 用等号分隔键和值
+                var keyValue = pair.Split(new[] { '=' }, 2);
+
+                var key = Uri.UnescapeDataString(keyValue[0]); // 解码键
+                var value = keyValue.Length > 1 ? Uri.UnescapeDataString(keyValue[1]) : string.Empty; // 解码值
+
+                result[key] = value; // 添加到字典中
+            }
+
+            return result;
+        }
+    }
+}