6
Tôi không thể tìm ra cách viết .NET Web Web API để hỗ trợ Tải lên tệp. Xin lưu ý tôi không sử dụng mẫu ASP.NET Core MVC để tải lên tệp nhưng thông qua một thùng chứa Servlet/JSP. Sau đây là cách của tôi project.json được định nghĩa,.NET Core - Web API - Cách tải tệp lên?
{
"dependencies": {
"Microsoft.NETCore.App": {
"version": "1.0.1",
"type": "platform"
},
"Microsoft.AspNetCore.Mvc": "1.0.1",
"Microsoft.AspNetCore.Routing": "1.0.1",
"Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
"Microsoft.AspNetCore.Server.Kestrel": "1.0.1",
"Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
"Microsoft.Extensions.Configuration.FileExtensions": "1.0.0",
"Microsoft.Extensions.Configuration.Json": "1.0.0",
"Microsoft.Extensions.Logging": "1.0.0",
"Microsoft.Extensions.Logging.Console": "1.0.0",
"Microsoft.Extensions.Logging.Debug": "1.0.0",
"Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0",
"Npgsql": "3.1.9",
"CoreCompat.Newtonsoft.Json": "9.0.2-beta001",
"Newtonsoft.Json": "9.0.1"
},
"tools": {
"Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final"
},
"frameworks": {
"netcoreapp1.0": {
"imports": [
"dotnet5.6",
"portable-net45+win8"
]
}
},
"buildOptions": {
"emitEntryPoint": true,
"preserveCompilationContext": true
},
"runtimeOptions": {
"configProperties": {
"System.GC.Server": true
}
},
"publishOptions": {
"include": [
"wwwroot",
"**/*.cshtml",
"appsettings.json",
"web.config"
]
},
"scripts": {
"postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
}
}
Dưới đây là làm thế nào tôi Startup được định nghĩa,
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using QCService.Models;
namespace QCService
{
public class Startup
{
public Startup(IHostingEnvironment env)
{
var builder = new ConfigurationBuilder()
.SetBasePath(env.ContentRootPath)
.AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
.AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true)
.AddEnvironmentVariables();
Configuration = builder.Build();
}
public IConfigurationRoot Configuration { get; }
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
// Add framework services.
services.AddMvc();
//Add SurveysRepository for Dependency Injection
services.AddSingleton<ISurveysRepository, SurveysRepository>();
//Add FeedbacksRepository for Dependency Injection
services.AddSingleton<IFeedbacksRepository, FeedbacksRepository>();
//Add AttachmentsRepository for Dependency Injection
services.AddSingleton<IAttachmentsRepository, AttachmentsRepository>();
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
loggerFactory.AddConsole(Configuration.GetSection("Logging"));
loggerFactory.AddDebug();
app.UseMvc();
}
}
}
Cuối cùng đây là cách điều khiển của tôi được định nghĩa,
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
//Including model classes for Attachments
using QCService.Models;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Hosting;
using System.IO;
using Microsoft.Net.Http.Headers;
// For more information on enabling Web API for empty projects, visit http://go.microsoft.com/fwlink/?LinkID=397860
namespace QCService.Controllers
{
[Route("api/[controller]")]
public class AttachmentsController : Controller
{
public IAttachmentsRepository AttachmentItems { get; set; }
public AttachmentsController(IAttachmentsRepository attachmentItems)
{
AttachmentItems = attachmentItems;
}
// GET: api/Attachments
[HttpGet] /*http://localhost:52770/api/Attachments*/
public IEnumerable<Attachments> Get()
{
return AttachmentItems.GetAllAttachments();
}
// GET api/Attachments/5
[HttpGet("{id}")] /*http://localhost:52770/api/Attachments/{AttachmentID}*/
public Attachments Get(int id)
{
return AttachmentItems.GetAttachment(id);
}
// GET api/Attachments/5
[HttpGet("Feedback/{id}")] /*http://localhost:52770/api/Attachments/Feedback/{FeedbackID}*/
public IEnumerable<Attachments> GetFeedbackAttachments(int id)
{
return AttachmentItems.GetFeedbackAttachments(id);
}
// POST api/Attachments
[HttpPost]/*http://localhost:52770/api/Attachments/*/
public async Task<IActionResult> PostFiles(ICollection<IFormFile> files)
{
try
{
System.Console.WriteLine("You received the call!");
WriteLog("PostFiles call received!", true);
//We would always copy the attachments to the folder specified above but for now dump it wherver....
long size = files.Sum(f => f.Length);
// full path to file in temp location
var filePath = Path.GetTempFileName();
var fileName = Path.GetTempFileName();
foreach (var formFile in files)
{
if (formFile.Length > 0)
{
using (var stream = new FileStream(filePath, FileMode.Create))
{
await formFile.CopyToAsync(stream);
//formFile.CopyToAsync(stream);
}
}
}
// process uploaded files
// Don't rely on or trust the FileName property without validation.
//Displaying File Name for verification purposes for now -Rohit
return Ok(new { count = files.Count, fileName, size, filePath });
}
catch (Exception exp)
{
System.Console.WriteLine("Exception generated when uploading file - " + exp.Message);
WriteLog("Exception generated when uploading file - " + exp.Message, true);
string message = $"file/upload failed!";
return Json(message);
}
}
/// <summary>
/// Writes a log entry to the local file system
/// </summary>
/// <param name="Message">Message to be written to the log file</param>
/// <param name="InsertNewLine">Inserts a new line</param>
public void WriteLog(string Message, bool InsertNewLine)
{
LogActivity ologObject = null;
try
{
string MessageString = (InsertNewLine == true ? Environment.NewLine : "") + Message;
if (ologObject == null)
ologObject = LogActivity.GetLogObject();
ologObject.WriteLog(Message, InsertNewLine);
}
catch (Exception ex)
{
Console.WriteLine("Unable to write to the log file : " + ex.Message);
Console.WriteLine("Stack Trace : " + ex.StackTrace);
}
}
}
}
Tôi đã trải qua điều này li nk, https://docs.microsoft.com/en-us/aspnet/core/mvc/models/file-uploads nhưng không thể hoạt động! Bất kỳ trợ giúp nào được đánh giá cao !!!
Tôi đang sử dụng nâng cao Nghỉ ngơi Khách hàng của Google để gửi dữ liệu như sau, This is how I am sending the POST request
tôi tiếp tục nhận được phản ứng thất bại với thông báo sau ... Tình trạng: 500: Internal Server Error thời gian tải: 62 ms tiêu đề đáp ứng tiêu đề yêu cầu Chuyển hướng Thời gian Content-type: multipart/form-data; ranh giới = ---- WebKitFormBoundary0RKUhduCjSNZOEMN Content-Length: 9106 Nguồn nhắn
POST/api/Attachments HTTP/1.1 XƯỚNG NGÔN VIÊN: localhost: 52.770 content-type: multipart/form-data; ranh giới = ---- WebKitFormBoundary0RKUhduCjSNZOEMN nội dung dài: 9106
------ WebKitFormBoundary0RKUhduCjSNZOEMN Content-Disposition: form-data; name = "fileUpload1"; filename = "1i4ymeoyov_In_the_Wild_Testing.png" Content-Type: image/png
PNG
IHDR, I3 (tEXtSoftwareAdobe ImageReadyqe < iTXtXML: com.adobe.xmp 8 ^ 2IDATx ] pU @ a H Pe P8 Ȉ b ̌3 p q * 7 " h + Yf O atD (< h¦DLXdOH =} } ov8_U ..... ------ WebKitFormBoundary0RKUhduCjSNZOEMN--
Lưu ý rằng trong ASP.NET lõi không có sự phân biệt giữa MVC và API Web (chỉ FYI) .. – ssmith