Question

我为单页面网络应用程序创建了Web Api和MVC。我想调用web api并渲染mvc控制器，使用Rotativa api从视图创建pdf。问题是当我在web api中访问mvc控制器时它无法正常工作。

我如何访问web api中的mvc控制器以从视图中获取pdf？

注意：在web api中声明的mvc控制器对象，因此它提供了＆＃34; ControllerContext＆＃34;在＆＃34; GetPdfBytesFormView＆＃34;中为空方法

Web Api：

[RoutePrefix("api/reports/TestReport")]
public class TestReportController : ApiController
{     
    [HttpPost]
    [Route("GetRequistionPdf")]
    public HttpResponseMessage GetRequistionPdf(modelClass oModel)  
    {       
        HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.OK, "value");
        ReportController _Report = new ReportController();
        response.Content = new ByteArrayContent(_Report.GetPdfBytesFormView(oModel));       
        response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/pdf");            
        return response;
    }
}

MVC控制器：

public class ReportController : Controller
{       
    public ActionResult GenerateReport(modelClass oModel)
    {
        return View(oModel);
    }

    public byte[] GetPdfBytesFormView(modelClass oModel)
    {            
        var actionPDF = new Rotativa.ActionAsPdf("GenerateReport", oModel) 
        {                
            PageSize = Size.A4,
            PageOrientation = Orientation.Portrait,
            PageMargins = { Left = 6, Right = 7 }
        };

        byte[] applicationPDFData = actionPDF.BuildPdf(ControllerContext);            
        return applicationPDFData;
    }
}

Angularjs web api call

$http.post('http://localhost:54527/api/reports/TestReport/GetRequistionPdf', { data }, { responseType: 'arraybuffer' })
                .success(function (data) {
                    var file = new Blob([data], { type: 'application/pdf' });
                    var fileURL = URL.createObjectURL(file);
                    window.open(fileURL);
                });

Answer 1

最后得到解决方案。

假设您的控制器名称为“PDFController”，操作名称为“GetPDF”。在api控制器中写下以下代码

    // Add key value    
    RouteData route = new RouteData();
    route.Values.Add("action", "GetPDF"); // ActionName
    route.Values.Add("controller", "PDF"); // Controller Name
    System.Web.Mvc.ControllerContext newContext = new System.Web.Mvc.ControllerContext(new HttpContextWrapper(System.Web.HttpContext.Current), route, controller);
    controller.ControllerContext = newContext;
    controller.GetPDF();

你现在已经完成了。你的pdf应该生成。

希望有所帮助

Answer 2

尝试将GetRequestionPdf替换为低于1：

public HttpResponse GetRequistionPdf(modelClass oModel)  
    {       
        HttpResponse response = HttpContext.Current.Response;
        ReportController _Report = new ReportController();

                response.Clear()
                response.ClearContent()
                response.ClearHeaders()
                response.Buffer = True
                response.ContentType = "application/pdf"
                response.AddHeader("Content-Disposition", "attachment;filename=xyz.pdf")
                response.BinaryWrite(_Report.GetPdfBytesFormView(oModel));
                response.End()


        return response;
    }

如何访问web api控制器中的mvc控制器以从视图

2 个答案: