使用Web Api（.Net Core）在Ubuntu中对文件进行操作

Question

我有下一个问题。我想做一些＆＃34; crud＆＃34;使用web api（.net core）对ubuntu中的某些文件（存储在vm中）进行操作。问题是当我对服务器进行POST调用时，我得到了500.我使用像web服务器这样的apache。如果我再打一次电话（GET电话），一切都很完美。

[Route("api/[controller]")]
public class CompilationController : Controller
{
    private ICompilationFile _compilationFile;

    public CompilationController(ICompilationFile compilationFile)
    {
        _compilationFile = compilationFile;
    }
    // GET: api/<controller>
    [HttpGet]
    public IEnumerable<string> Get()
    {
        return new string[] { "compile", "compile" };
    }


    // POST api/<controller>
    [HttpPost]
    public string Post([FromBody]CompilationModel item)
    {
        if (ModelState.IsValid)
        {
            var response = _compilationFile.CompileFile(item.Content, item.Language, item.ProblemName, item.Username);
            return JsonConvert.SerializeObject(new ResponseModel {
                                               CompilationResponse = response.Item1.ToString(),
                                               OutputMessage = response.Item2 });
        }

        return "Failed response";
    }

对于GET，请致电。

这是与文件一起使用的代码部分：

     public void GenerateFile(string content, string language, string 
problemName, string userName)
    {
        //create directory
        var goodDirectory = GetCurrentDirectory();
        if (!Directory.Exists(goodDirectory))
        {
            Directory.CreateDirectory(goodDirectory);
        }

        StringBuilder sb = new StringBuilder();
        string problemFullName = Builder.BuildProblemName(problemName, userName);
        sb.Append(problemFullName).Append(LanguageHelper.GetLanguageExtenstionType(language));
        string sourceName = sb.ToString();

        //create file
        var fileToCreate = Path.Combine(goodDirectory, sourceName);
        if(File.Exists(fileToCreate))
        {
            File.Delete(fileToCreate);
        }
        if (!File.Exists(fileToCreate))
        {
            using (FileStream fs = new FileStream(fileToCreate, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None))
            {
                content = content.Trim();
                StreamWriter writer = new StreamWriter(fs, Encoding.UTF8);
                writer.WriteLine(content);
                writer.Flush();
            }
        }
    }

public Tuple<Verdict, string> GetVerdictForFile(string argument,string workingDirectory)
    {
        Process process = new Process();
        process.StartInfo.FileName = "/bin/bash";
        process.StartInfo.Arguments = $"-c \"{argument}\"";
        process.StartInfo.UseShellExecute = false;
        process.StartInfo.RedirectStandardOutput = true;
        process.StartInfo.RedirectStandardError = true;
        process.StartInfo.WorkingDirectory = workingDirectory;
        process.Start();
        //* Read the output (or the error)

        string output = process.StandardOutput.ReadToEnd();
        Console.WriteLine(output);
        string err = process.StandardError.ReadToEnd();
        Console.WriteLine(err);
        process.WaitForExit();
        process.Close();

        Verdict verdict = Verdict.SUCCESS;

        if(!string.IsNullOrEmpty(err))
        {
            verdict = Verdict.ERROR;
        }

        StringBuilder sb = new StringBuilder("Output: ").Append(output);
        if(verdict == Verdict.ERROR)
        {
            sb.AppendLine().Append("CompilationErrors: ").Append(err);
        }

        return new Tuple<Verdict, string>(verdict, sb.ToString());

    }

如果我直接在ubuntu中为＃34; crud＆＃34;写一个不同的项目（一个控制台项目）。对文件的操作一切正常。