新增业务打印绑定功能，整合打印模板与业务数据的映射配置，优化打印数据生成逻辑。新增免密接口，支持桌面端打印模板的查询与列表展示，提升用户体验和系统的实时数据同步能力。同时，重构相关控制器以增强系统的可维护性和扩展性。
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using System.IO;
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using System.Net.Http;
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using System.Net.Http.Json;
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using System.Text.Json;
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using System.Text.Json.Serialization;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.Http;
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using YY.Admin.Core.Entity;
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using YY.Admin.Core.Services;
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namespace YY.Admin.Services.Service.Print;
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/// <summary>业务打印绑定：免密列表 + 本地缓存（只读）</summary>
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public class PrintBizTemplateBindService : IPrintBizTemplateBindService
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{
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private readonly IHttpClientFactory _httpClientFactory;
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private readonly IConfiguration _configuration;
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private readonly object _cacheLock = new();
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private List<PrintBizTemplateBind> _localCache = new();
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private readonly string _cacheFilePath;
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private static readonly JsonSerializerOptions JsonOpts = new()
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{
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PropertyNameCaseInsensitive = true,
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PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
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Converters = { new NullableDateTimeJsonConverter() }
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};
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private string BaseUrl =>
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(_configuration.GetValue<string>("JeecgIntegration:BaseUrl") ?? "http://localhost:8080/jeecg-boot").TrimEnd('/');
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public PrintBizTemplateBindService(IHttpClientFactory httpClientFactory, IConfiguration configuration)
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{
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_httpClientFactory = httpClientFactory;
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_configuration = configuration;
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var appDataDir = Path.Combine(
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Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
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"YY.Admin", "sync-cache");
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Directory.CreateDirectory(appDataDir);
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_cacheFilePath = Path.Combine(appDataDir, "print-biz-bind-cache.json");
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LoadCacheFromDisk();
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}
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public IReadOnlyList<PrintBizTemplateBind> GetCached()
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{
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lock (_cacheLock)
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{
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return _localCache.AsReadOnly();
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}
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}
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public async Task<IReadOnlyList<PrintBizTemplateBind>> ListAsync(CancellationToken ct = default)
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{
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try
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{
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return await RefreshCacheAsync(ct).ConfigureAwait(false);
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}
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catch
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{
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return GetCached();
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}
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}
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public async Task<IReadOnlyList<PrintBizTemplateBind>> RefreshCacheAsync(CancellationToken ct = default)
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{
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var client = _httpClientFactory.CreateClient("JeecgApi");
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var url = $"{BaseUrl}/print/bizTemplateBind/anon/list?pageSize=500&pageNo=1";
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var response = await client.GetAsync(url, ct).ConfigureAwait(false);
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response.EnsureSuccessStatusCode();
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var result = await response.Content.ReadFromJsonAsync<JeecgResult<JeecgPage<PrintBizTemplateBind>>>(JsonOpts, ct).ConfigureAwait(false);
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if (result?.Success != true)
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throw new InvalidOperationException(result?.Message ?? "后端返回失败");
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var records = result.Result?.Records ?? new List<PrintBizTemplateBind>();
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lock (_cacheLock)
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{
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_localCache = records;
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SaveCacheToDiskUnsafe();
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}
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return records.AsReadOnly();
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}
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public async Task<PrintBizTemplateBind?> GetByIdAsync(string id, CancellationToken ct = default)
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{
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if (string.IsNullOrWhiteSpace(id)) return null;
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try
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{
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var client = _httpClientFactory.CreateClient("JeecgApi");
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var url = $"{BaseUrl}/print/bizTemplateBind/anon/queryById?id={Uri.EscapeDataString(id)}";
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var response = await client.GetAsync(url, ct).ConfigureAwait(false);
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if (!response.IsSuccessStatusCode) return GetCachedById(id);
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var result = await response.Content.ReadFromJsonAsync<JeecgResult<PrintBizTemplateBind>>(JsonOpts, ct).ConfigureAwait(false);
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return result?.Success == true ? result.Result : GetCachedById(id);
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}
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catch
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{
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return GetCachedById(id);
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}
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}
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private PrintBizTemplateBind? GetCachedById(string id)
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{
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lock (_cacheLock)
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{
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return _localCache.FirstOrDefault(x => string.Equals(x.Id, id, StringComparison.OrdinalIgnoreCase));
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}
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}
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private void LoadCacheFromDisk()
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{
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try
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{
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if (!File.Exists(_cacheFilePath)) return;
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var json = File.ReadAllText(_cacheFilePath);
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var data = JsonSerializer.Deserialize<List<PrintBizTemplateBind>>(json, JsonOpts);
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_localCache = data ?? new List<PrintBizTemplateBind>();
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}
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catch
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{
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_localCache = new List<PrintBizTemplateBind>();
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}
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}
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private void SaveCacheToDiskUnsafe()
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{
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try
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{
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var json = JsonSerializer.Serialize(_localCache, JsonOpts);
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File.WriteAllText(_cacheFilePath, json);
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}
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catch { /* 离线或磁盘异常时忽略 */ }
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}
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private record JeecgResult<T>(bool Success, T? Result, string? Message);
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private record JeecgPage<T>(List<T> Records, long Total);
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private sealed class NullableDateTimeJsonConverter : JsonConverter<DateTime?>
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{
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private static readonly string[] Formats =
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[
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"yyyy-MM-dd HH:mm:ss",
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"yyyy-MM-dd HH:mm:ss.fff",
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"yyyy-MM-ddTHH:mm:ss",
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"yyyy-MM-ddTHH:mm:ss.fff",
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"yyyy-MM-ddTHH:mm:ssZ",
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"yyyy-MM-ddTHH:mm:ss.fffZ"
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];
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public override DateTime? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
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{
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if (reader.TokenType == JsonTokenType.Null) return null;
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if (reader.TokenType == JsonTokenType.String)
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{
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var raw = reader.GetString();
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if (string.IsNullOrWhiteSpace(raw)) return null;
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if (DateTime.TryParseExact(raw, Formats, System.Globalization.CultureInfo.InvariantCulture,
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System.Globalization.DateTimeStyles.AssumeLocal, out var exact))
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return exact;
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if (DateTime.TryParse(raw, out var fallback)) return fallback;
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}
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throw new JsonException($"无法将 JSON 值转换为 DateTime?，token={reader.TokenType}");
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}
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public override void Write(Utf8JsonWriter writer, DateTime? value, JsonSerializerOptions options)
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{
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if (value.HasValue) writer.WriteStringValue(value.Value.ToString("yyyy-MM-dd HH:mm:ss"));
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else writer.WriteNullValue();
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}
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}
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}
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