这是我将图片添加到工作表的代码。我从数据库中得到一个字节的图片。.Net核心框架版本为2.2.104。这是一个API项目。在我的语言环境中,代码运行得很好。我使用的是ClosedXML组件0.95.4版本,如下所示。
[HttpPost("GetTowel")]
public IActionResult GetTowel()
{
string contentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
string fileName = "Towel Quotation.xlsx";
try
{
using (var workbook = new XLWorkbook())
{
IXLWorksheet worksheet = workbook.Worksheets.Add("Towel Quotation");
byte[] bytes = _fileService.Get(159).FileInBytes;
System.IO.Stream x = new System.IO.MemoryStream(bytes);
//the exception is throwed at this line:
**var image = worksheet.AddPicture(x).MoveTo(worksheet.Cell("P1")).Scale(1.0);**
using (var stream = new MemoryStream())
{
workbook.SaveAs(stream);
var content = stream.ToArray();
return File(content, contentType, fileName);
}
}
}
catch (Exception ex)
{
return BadRequest(ErrorResultFormatter.PrepareErrorResult("",ex.Message));
}
}

我的Kubernetes服务器信息如下:
System.drawing.common the type initializer for 'gdip' threw an exception*FROM mcr.microsoft.com/dotnet/core/sdk:2.2 AS build WORKDIR /app
COPY *.csproj Nuget.Config ./ RUN dotnet restore /property:Configuration=Release
--configfile=Nuget.Config --no-cache --force
COPY . ./temp/ WORKDIR /app/temp RUN dotnet publish -c Release -o out FROM mcr.microsoft.com/dotnet/core/aspnet:2.2 AS runtime ENV ASPNETCORE_URLS="http://+" ENV ASPNETCORE_Kestrel__Certificates__Default__Password="*****" WORKDIR /app COPY --from=build /app/temp/out ./ ENTRYPOINT ["dotnet", "blahblah.dll"]*在服务器端,我得到的异常如下:"system.drawing.common‘的类型初始化器抛出了一个异常“
我在谷歌上搜索了很多次。通常建议使用这种方式来添加docker文件:
RUN apt-get install libgdiplus但是这种方式也没有解决我的问题。有人能帮我吗?
提前谢谢。
发布于 2021-04-14 21:06:47
我有一个这样的Dockerfile:
FROM mcr.microsoft.com/dotnet/aspnet:5.0-buster-slim AS base
RUN apt-get update && apt-get install -y apt-utils libgdiplus libc6-dev
WORKDIR /app
EXPOSE 80
EXPOSE 443
FROM mcr.microsoft.com/dotnet/sdk:5.0-buster-slim AS build
WORKDIR /src
COPY ...我在第二行运行apt-get update and install命令。您可以像这样运行命令。我希望它也适用于你。
发布于 2021-11-25 06:20:22
最被接受的答案对我来说在ubuntu20.04上不起作用,而且看起来对非.NET操作系统的支持在ubuntu6中被移除了:
System.Drawing.Common only supported on Windows
建议的替代方案是:
要将这些API用于跨平台应用程序,请迁移到以下库之一:
ImageSharp https://github.com/SixLabors/ImageSharp SkiaSharp https://github.com/mono/SkiaSharp Microsoft.Maui.Graphics https://github.com/dotnet/Microsoft.Maui.Graphics
https://stackoverflow.com/questions/67091719
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