尝试上传文件作为表单的一部分并将其存储在wwwroot中的文件夹中，然后将该文件的URL以及表单的其他详细信息存储在sql服务器数据库表中？如果有人有任何想法，那将是极大的应用。我已经使用了此代码，但是它不存储任何内容。但是，当我创建一个新的新项目时，我设法使该代码正确运行，但似乎无法使其在该工作项目中正常工作。不知道这与我是否拥有存储库有关，而我创建的确实可以正常工作的新项目没有任何存储库。这是我能想到的唯一区别。有什么想法吗？
//型号
namespace PostProjectEvaluations.Web.Models
{
public partial class Projects
{
[Key]
public int ProjectId { get; set; }
[Required]
[StringLength(300)]
public string Name { get; set; }
[Required]
[StringLength(50)]
public string Manager { get; set; }
public string FilePath { get; set; }
}
public class ProjectsVM
{
public string Name { get; set; }
public IFormFile File { get; set; }
}
//控制器
namespace PostProjectEvaluations.Web.Controllers
{
public class projectsController : Controller
{
private readonly IApplicationRepository ApplicationRepository;
private readonly PostProjectEvaluationsContext _context;
private IHostingEnvironment mxHostingEnvironment { get; set; }
private object objproject;
public projectsController(IApplicationRepository applicationRepository,
IHostingEnvironment hostingEnvironment, PostProjectEvaluationsContext context)
{
mxHostingEnvironment = hostingEnvironment;
ApplicationRepository = applicationRepository;
_context = context;
}
public IActionResult Index()
{
ViewBag.dataSource = ApplicationRepository.GetAllProjects().ToList();
var projects = ApplicationRepository.GetAllProjects();
return View(projects);
}
[HttpPost]
[ValidateAntiForgeryToken]
public async Task<IActionResult> Index(ProjectsVM projectsVM)
{
if (projectsVM.File != null)
{
//upload files to wwwroot
var fileName = Path.GetFileName(projectsVM.File.FileName);
var filePath = Path.Combine(mxHostingEnvironment.WebRootPath, "Uploads", fileName);
using (var fileSteam = new FileStream(filePath, FileMode.Create))
{
await projectsVM.File.CopyToAsync(fileSteam);
}
//your logic to save filePath to database, for example
Projects projects = new Projects();
projects.Name = projectsVM.Name;
projects.FilePath = filePath;
_context.Projects.Add(projects);
_context.SaveChanges();
}
else
{
}
return View("Index");
}
public IActionResult Details(int id)
{
var project = ApplicationRepository.GetProjects(id);
return View(project);
}
[HttpGet]
public IActionResult Create()
{
var project = new Projects();
return View(project);
}
[HttpPost]
public IActionResult Create(Projects projects)
{
ApplicationRepository.Create(projects);
return RedirectToAction("Index");
}
public IActionResult Delete(int id)
{
var project = ApplicationRepository.GetProjects(id);
ApplicationRepository.Delete(project);
return RedirectToAction("Index");
}
[HttpGet]
public IActionResult Edit(int id)
{
var project = ApplicationRepository.GetProjects(id);
//mxApplicationRepository.SaveChangesAsync();
return View(project);
}
[HttpPost]
public IActionResult Edit(Projects projects)
{
ApplicationRepository.Edit(projects);
//mxApplicationRepository.SaveChangesAsync();
return RedirectToAction("Index");
}
}
}
//查看
<form enctype="multipart/form-data" asp-controller="Projects" asp-action="Create" method="post" class="form-horizontal">
<div asp-validation-summary="ModelOnly" class="text-danger"></div>
<div class="form-body">
<h3 class="form-section">Project Info</h3>
<div class="row">
<div class="col-md-6">
<div class="form-group">
<label class="control-label col-md-3">Project Name</label>
<div class="col-md-9">
<input asp-for="Name" class="form-control" placeholder="Name">
<span asp-validation-for="Name" class="text-danger"></span>
</div>
</div>
</div>
<!--/span-->
<div class="col-md-6">
<div class="form-group">
<label class="control-label col-md-3">Project Manager</label>
<div class="col-md-9">
<input asp-for="Manager" class="form-control" placeholder="Name">
</div>
</div>
</div>
<!--/span-->
</div>
<!--/span-->
</div>
<h3 class="form-section">Project Files</h3>
<!--/row-->
<div class="row">
<div>
<div class="col-md-6">
<div class="col-md-10">
<p>Upload one or more files using this form:</p>
<input type="file" name="files" multiple />
</div>
</div>
</div>
<div>
</div>
</div>
<div class="form-actions right">
<input type="submit" class="btn blue-assembly" name="submitButton" value="Save" />
<a asp-action="Index" class="btn default" onclick="cancelClick()">Cancel</a>
</div>
</form>
答案 0 :(得分：0)
您可以使用IFormFile来接收文件。然后使用EF core将文件路径URL保存到数据库中。记住要创建一个myFiles文件夹，首先将上传的文件保存在wwwroot下。
您可以参考File uploads in ASP.NET Core
的教程下面是一个简单的演示：
型号：
public class Engineer
{
public int Id { get; set; }
public string Name { get; set; }
public string FilePath { get; set; }
}
public class EngineerVM
{
public string Name { get; set; }
public IFormFile File{ get; set; }
}
查看：
@model EngineerVM
<form method="post" enctype="multipart/form-data" asp-controller="Home" asp-action="Index">
<div class="form-group">
<div class="col-md-10">
<input type="text" asp-for="Name" />
</div>
<div class="col-md-10">
<p>Upload one or more files using this form:</p>
<input type="file" name="file"/>
</div>
</div>
<div class="form-group">
<div class="col-md-10">
<input type="submit" value="Save" />
</div>
</div>
</form>
控制器：
public class HomeController : Controller
{
private readonly IHostingEnvironment _hostingEnv;
private readonly ApplicationDbContext _context;
public HomeController(IHostingEnvironment hostingEnv,ApplicationDbContext context)
{
_hostingEnv = hostingEnv;
_context = context;
}
[HttpPost]
[ValidateAntiForgeryToken]
public async Task<IActionResult> Index(EngineerVM engineerVM)
{
if (engineerVM.File != null)
{
//upload files to wwwroot
var fileName = Path.GetFileName(engineerVM.File.FileName);
var filePath = Path.Combine(_hostingEnv.WebRootPath, "images", fileName);
using (var fileSteam = new FileStream(filePath, FileMode.Create))
{
await engineerVM.File.CopyToAsync(fileSteam);
}
//your logic to save filePath to database, for example
Engineer engineer = new Engineer();
engineer.Name = engineerVM.Name;
engineer.FilePath = filePath;
_context.Engineers.Add(engineer);
await _context.SaveChangesAsync();
}
else
{
}
return View();
}
}