135 lines
4.6 KiB
C#
135 lines
4.6 KiB
C#
using FastReport;
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using NPOI.POIFS.Crypt;
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using System;
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using System.Collections.Generic;
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using System.Data;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Web;
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using System.Web.Security;
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namespace BLL.Common
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{
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public static class FastReportService
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{
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// 缓存过期时间：30分钟
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private static readonly int CacheExpirationMinutes = 5;
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/// <summary>
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/// 重置数据 - 清理缓存和Session
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/// </summary>
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public static void ResetData()
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{
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if (HttpContext.Current?.Session == null)
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{
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return;
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}
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// 清理Session中的缓存键引用
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var cacheKeys = HttpContext.Current.Session["ReportDataCacheKeys"] as List<string>;
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if (cacheKeys != null)
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{
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foreach (var key in cacheKeys)
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{
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try
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{
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CacheHelper.Remove(key);
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}
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catch
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{
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// 忽略缓存删除异常
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}
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}
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}
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HttpContext.Current.Session["ReportDataCacheKeys"] = null;
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HttpContext.Current.Session["ReportParameterCacheKey"] = null;
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}
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/// <summary>
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/// 添加报表数据表到缓存
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/// </summary>
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public static void AddFastreportTable(DataTable dataTable)
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{
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// 生成唯一缓存键
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string cacheKey = $"ReportData_{Guid.NewGuid()}_{DateTime.Now.Ticks}";
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// 将数据表存储到缓存中，设置5分钟过期
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CacheHelper.Add(cacheKey, dataTable, DateTimeOffset.Now.AddMinutes(CacheExpirationMinutes));
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List<string> cacheKeys = HttpContext.Current.Session["ReportDataCacheKeys"] as List<string>;
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if (cacheKeys==null)
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{
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cacheKeys = new List<string>();
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}
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cacheKeys.Add(cacheKey);
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HttpContext.Current.Session["ReportDataCacheKeys"] = cacheKeys;
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}
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/// <summary>
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/// 添加报表参数到缓存
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/// </summary>
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public static void AddFastreportParameter(Dictionary<string, string> Dicparames)
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{
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// 生成唯一缓存键
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string cacheKey = $"ReportParam_{Guid.NewGuid()}_{DateTime.Now.Ticks}";
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// 将参数存储到缓存中，设置5分钟过期
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CacheHelper.Add(cacheKey, Dicparames, DateTimeOffset.Now.AddMinutes(CacheExpirationMinutes));
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// Session只存储缓存键的引用（轻量级）
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HttpContext.Current.Session["ReportParameterCacheKey"] = cacheKey;
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}
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/// <summary>
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/// 合并报表后打印
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/// </summary>
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/// <param name="fastReportItems">报表实体集</param>
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/// <param name="path">导出的路径</param>
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public static void ExportMergeReport(List<Model.FastReportItem> fastReportItems, string path, string printType)
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{
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Report report = new Report();
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report.PrintSettings.ShowDialog = false; //隐藏弹窗
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FastReport.EnvironmentSettings settings = new EnvironmentSettings();
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settings.ReportSettings.ShowProgress = false; //隐藏进度条
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for (int i = 0; i < fastReportItems.Count; i++)
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{
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report.Load(Funs.RootPath + fastReportItems[i].ReportPath); //加载报表
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List<DataTable> dataTables = fastReportItems[i].DataTables;
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Dictionary<string, string> ParameterValues = fastReportItems[i].ParameterValues;
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if (dataTables != null && dataTables.Count > 0)
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{
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for (int j = 0; j < dataTables.Count; j++)
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{
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report.RegisterData(dataTables[j], dataTables[j].TableName);//绑定数据源
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}
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}
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if (ParameterValues.Count > 0)
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{
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foreach (KeyValuePair<string, string> kvp in ParameterValues)
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{
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report.SetParameterValue(kvp.Key, kvp.Value);//绑定参数
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}
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}
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if (i == 0)
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{
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report.Prepare();
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}
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else
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{
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report.Prepare(true);
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}
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}
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FastReport.Export.Pdf.PDFExport exp = new FastReport.Export.Pdf.PDFExport();
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report.Export(exp, path);
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}
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}
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}
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