luoqian
6acc92ca27
- 所有空 catch 块补全日志记录，统一使用 Serilog/AppLog - 按场景分级：Error（意外失败）、Warning（次要问题）、Information（预期内） - 端口 HttpPort/HttpsPort 抽离到 appsettings.json Server 配置节 - QrCodeService 通过 IConfiguration 读取端口，消除硬编码 - 前端通过 Vite proxy 转发 /api，http.ts 统一使用 origin 地址 - 移除所有 Debug.WriteLine 和 Serilog.Log.Debug 日志 Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
62 lines
2.6 KiB
C#
62 lines
2.6 KiB
C#
using FileShare_Common.Core;
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using FileShare_Services.Core;
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using Microsoft.Extensions.Configuration;
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using QRCoder;
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using System.Net;
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using System.Net.NetworkInformation;
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using System.Net.Sockets;
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namespace FileShare_Services.Services.QrCode
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{
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/// <summary>
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/// 二维码生成服务，获取局域网 IP 并生成 PNG 格式的访问二维码。
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/// </summary>
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public sealed class QrCodeService(IConfiguration configuration) : IQrCodeService
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{
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/// <inheritdoc />
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public Task<object?> GenerateQrCodeAsync(ServiceEndpointContext ctx)
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{
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var ip = GetLanIpAddress();
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if (ip is null)
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throw new InvalidOperationException("无法获取局域网IP地址");
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var port = int.TryParse(configuration["Server:HttpPort"], out var p) ? p : 5206;
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var url = $"http://{ip}:{port}";
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var base64 = GeneratePngBase64(url);
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return Task.FromResult<object?>(ResponseHelper.Ok(new QrCodeResponse(url, base64)));
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}
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/// <summary>
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/// 使用 QRCoder 库生成指定内容的二维码，输出为 Base64 编码的 PNG data URI。
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/// </summary>
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/// <param name="content">二维码编码内容。</param>
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/// <returns>data URI 格式的 Base64 PNG 字符串。</returns>
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private static string GeneratePngBase64(string content)
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{
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using var generator = new QRCodeGenerator();
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using var data = generator.CreateQrCode(content, QRCodeGenerator.ECCLevel.Q);
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using var png = new PngByteQRCode(data);
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var bytes = png.GetGraphic(20);
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return $"data:image/png;base64,{Convert.ToBase64String(bytes)}";
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}
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/// <summary>
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/// 获取本机第一个可用的局域网 IPv4 地址，排除回环地址和 APIPA 地址（169.254.x.x）。
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/// </summary>
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/// <returns>局域网 IP 地址字符串，无可用地址时返回 null。</returns>
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private static string? GetLanIpAddress()
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{
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return NetworkInterface.GetAllNetworkInterfaces()
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.Where(ni => ni.OperationalStatus == OperationalStatus.Up
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&& ni.NetworkInterfaceType != NetworkInterfaceType.Loopback)
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.SelectMany(ni => ni.GetIPProperties().UnicastAddresses)
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.Select(ua => ua.Address)
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.FirstOrDefault(ip =>
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ip.AddressFamily == AddressFamily.InterNetwork
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&& !IPAddress.IsLoopback(ip)
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&& !ip.ToString().StartsWith("169.254"))
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?.ToString();
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}
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}
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}
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