feat 导出

Src/Dlhis.Canteen/ExcelResultAttribute.cs

@@ -0,0 +1,43 @@
+using Dlhis.ExcelHelper;
+using Kurisu.AspNetCore.DataAccess.Dto;
+using Kurisu.AspNetCore.UnifyResultAndValidation.Abstractions;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.Filters;
+
+namespace Dlhis.Canteen;
+
+/// <summary>
+/// 忽略响应<see cref="IApiResult"/>.Data的自动camelCase
+/// </summary>
+[AttributeUsage(AttributeTargets.Method)]
+public class ExcelResultAttribute : Attribute, IAsyncActionFilter
+{
+    private readonly string _fileName;
+
+    public ExcelResultAttribute(string fileName)
+    {
+        _fileName = fileName;
+    }
+
+    /// <inheritdoc />
+    public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
+    {
+        var r = await next();
+        var or = r.Result as ObjectResult;
+        var v = or.Value;
+        var type = or.DeclaredType.GenericTypeArguments[0];
+        if (or.DeclaredType.IsGenericType && or.DeclaredType.GetGenericTypeDefinition() == typeof(Pagination<>))
+        {
+            v = v.GetType().GetProperty("Data").GetValue(v, null);
+        }
+
+        var method = typeof(ExcelExtensions).GetMethod(nameof(ExcelExtensions.ToExcelBytesAsync));
+        var task = (Task<byte[]>)method.MakeGenericMethod(type).Invoke(null, new[] { v });
+        var data = await task;
+
+        r.Result = new FileContentResult(data, "application/vnd.ms-excel")
+        {
+            FileDownloadName = _fileName
+        };
+    }
+}