Web api生成.rdlc报表，通过rest api传递数据

[Route("api/[controller]")]
[ApiController]
public class ReportController : ControllerBase
{
    private readonly IReportService _reportService;

    public ReportController(IReportService reportService)
    {
        _reportService = reportService;
    }

    [HttpGet("generate")]
    public async Task<IActionResult> GenerateReport()
    {
        var data = await _reportService.GetData();
        var reportBytes = await _reportService.GenerateRdlcReport(data);
        return File(reportBytes, "application/pdf", "report.pdf");
    }
}

public interface IReportService
{
    Task<IEnumerable<ReportData>> GetData();
    Task<byte[]> GenerateRdlcReport(IEnumerable<ReportData> data);
}

public class ReportService : IReportService
{
    public async Task<IEnumerable<ReportData>> GetData()
    {
        // 获取数据逻辑
    }

    public async Task<byte[]> GenerateRdlcReport(IEnumerable<ReportData> data)
    {
        var reportViewer = new ReportViewer();
        reportViewer.ProcessingMode = ProcessingMode.Local;
        reportViewer.LocalReport.ReportPath = "path_to_your_rdlc_file.rdlc";

        var dataSource = new ReportDataSource("DataSetName", data);
        reportViewer.LocalReport.DataSources.Add(dataSource);

        var result = new MemoryStream();
        await Task.Run(() => reportViewer.LocalReport.Render("PDF", null, out _, null, null, null, null));
        return result.ToArray();
    }
}

async function fetchReport() {
    const response = await fetch('/api/report/generate', {
        method: 'GET',
        headers: {
            'Content-Type': 'application/json'
        }
    });

    if (response.ok) {
        const blob = await response.blob();
        const url = window.URL.createObjectURL(blob);
        const a = document.createElement('a');
        a.href = url;
        a.download = 'report.pdf';
        document.body.appendChild(a);
        a.click();
        a.remove();
    } else {
        console.error('Failed to fetch report');
    }
}

public void ConfigureServices(IServiceCollection services)
{
    services.AddCors(options =>
    {
        options.AddPolicy("AllowAllOrigins",
            builder =>
            {
                builder.AllowAnyOrigin()
                       .AllowAnyHeader()
                       .AllowAnyMethod();
            });
    });

    services.AddControllers();
}

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    app.UseCors("AllowAllOrigins");

    // 其他中间件配置
}