增加摄像头中控台项目

SHH.CameraDashboard/Services/HttpService.cs

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+using Newtonsoft.Json;
+using System.Diagnostics;
+using System.Net.Http;
+using System.Text;
+
+namespace SHH.CameraDashboard
+{
+    public static class HttpService
+    {
+        // 单例 HttpClient，避免端口耗尽
+        private static readonly HttpClient _client;
+
+        // 【关键】日志事件，UI层订阅这个事件来显示日志
+        public static event Action<ApiLogEntry> OnApiLog;
+
+        static HttpService()
+        {
+            _client = new HttpClient();
+            // 设置一个合理的超时，避免界面卡死
+            _client.Timeout = TimeSpan.FromSeconds(5);
+        }
+
+        /// <summary>
+        /// 泛型 GET 方法
+        /// </summary>
+        public static async Task<T> GetAsync<T>(string url)
+        {
+            return await ExecuteRequestAsync<T>(new HttpRequestMessage(HttpMethod.Get, url));
+        }
+
+        /// <summary>
+        /// 泛型 POST 方法
+        /// </summary>
+        public static async Task<T> PostAsync<T>(string url, object data)
+        {
+            var request = new HttpRequestMessage(HttpMethod.Post, url);
+            string json = JsonConvert.SerializeObject(data);
+            request.Content = new StringContent(json, Encoding.UTF8, "application/json");
+            return await ExecuteRequestAsync<T>(request, json);
+        }
+
+        /// <summary>
+        /// 专门用于【连通性测试】的方法 (不关心返回值内容，只关心通不通)
+        /// </summary>
+        public static async Task<bool> TestConnectionAsync(string url)
+        {
+            // 复用核心逻辑，但泛型传 string (忽略结果) 或 object
+            try
+            {
+                await ExecuteRequestAsync<string>(new HttpRequestMessage(HttpMethod.Get, url));
+                return true;
+            }
+            catch
+            {
+                return false;
+            }
+        }
+
+        // --- 核心执行逻辑 ---
+        private static async Task<T> ExecuteRequestAsync<T>(HttpRequestMessage request, string requestBody = "")
+        {
+            // 1. 准备日志对象
+            var log = new ApiLogEntry
+            {
+                Method = request.Method.ToString(),
+                Url = request.RequestUri.ToString(),
+                RequestBody = requestBody
+            };
+
+            var sw = Stopwatch.StartNew(); // 开始计时
+
+            try
+            {
+                // 2. 发起网络请求
+                var response = await _client.SendAsync(request);
+
+                sw.Stop(); // 停止计时
+                log.DurationMs = sw.ElapsedMilliseconds;
+                log.StatusCode = (int)response.StatusCode;
+
+                // 3. 读取响应内容
+                string content = await response.Content.ReadAsStringAsync();
+                log.ResponseBody = content;
+
+                if (response.IsSuccessStatusCode)
+                {
+                    // 如果 T 是 string，直接返回内容，不反序列化
+                    if (typeof(T) == typeof(string))
+                        return (T)(object)content;
+
+                    // 反序列化 JSON
+                    return JsonConvert.DeserializeObject<T>(content);
+                }
+                else
+                {
+                    log.ErrorMessage = $"HTTP {response.StatusCode}: {response.ReasonPhrase}";
+                    throw new HttpRequestException(log.ErrorMessage);
+                }
+            }
+            catch (Exception ex)
+            {
+                sw.Stop();
+                if (log.DurationMs == 0) log.DurationMs = sw.ElapsedMilliseconds;
+
+                log.StatusCode = 0; // 0 代表网络层面的失败(如断网)
+                log.ErrorMessage = ex.Message;
+                log.ResponseBody = ex.ToString(); // 记录堆栈以便排查
+
+                throw; // 抛出异常供调用方 UI 处理
+            }
+            finally
+            {
+                // 4. 【广播日志】无论成功失败，都触发事件
+                // 使用 Invoke 确保 UI 订阅者能收到
+                OnApiLog?.Invoke(log);
+            }
+        }
+    }
+}

SHH.CameraDashboard/Services/StorageService.cs

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+using System.IO;
+using Newtonsoft.Json;
+
+namespace SHH.CameraDashboard.Services
+{
+    public static class StorageService
+    {
+        // 基础目录：C:\Users\Name\AppData\Local\SHH_Dashboard\
+        private static readonly string BaseDir = Path.Combine(
+            Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
+            "SHH_CameraDashboard");
+
+        /// <summary>
+        /// 泛型保存：将数据 T 序列化为指定文件名的 JSON
+        /// </summary>
+        public static void Save<T>(T data, string fileName) where T : class
+        {
+            try
+            {
+                if (!Directory.Exists(BaseDir)) Directory.CreateDirectory(BaseDir);
+
+                string filePath = Path.Combine(BaseDir, fileName);
+                string json = JsonConvert.SerializeObject(data, Formatting.Indented);
+                File.WriteAllText(filePath, json);
+            }
+            catch (Exception ex)
+            {
+                System.Diagnostics.Debug.WriteLine($"存储失败 [{fileName}]: {ex.Message}");
+            }
+        }
+
+        /// <summary>
+        /// 泛型读取：从指定 JSON 文件反序列化为数据 T
+        /// </summary>
+        public static T Load<T>(string fileName) where T : class, new()
+        {
+            try
+            {
+                string filePath = Path.Combine(BaseDir, fileName);
+                if (!File.Exists(filePath)) return new T();
+
+                string json = File.ReadAllText(filePath);
+                return JsonConvert.DeserializeObject<T>(json) ?? new T();
+            }
+            catch (Exception ex)
+            {
+                System.Diagnostics.Debug.WriteLine($"读取失败 [{fileName}]: {ex.Message}");
+                return new T();
+            }
+        }
+    }
+}