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ImgController.cs
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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using Blog.Core.Model;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
namespace Blog.Core.Controllers
{
[Route("api/[controller]")]
[ApiController]
public class ImgController : Controller
{
// GET: api/Img
[HttpGet]
public IEnumerable<string> Get()
{
return new string[] { "value1", "value2" };
}
// GET: api/Img/5
[HttpGet("{id}", Name = "Get")]
public string Get(int id)
{
return "value";
}
// GET: api/Download
/// <summary>
/// 下载图片（支持中文字符）
/// </summary>
/// <param name="environment"></param>
/// <returns></returns>
[HttpGet]
[Route("down")]
public FileStreamResult DownImg([FromServices]IHostingEnvironment environment)
{
string foldername = "";
string filepath = Path.Combine(environment.WebRootPath, foldername, "测试下载中文名称的图片.png");
var stream = System.IO.File.OpenRead(filepath);
string fileExt = ".jpg"; // 这里可以写一个获取文件扩展名的方法，获取扩展名
//获取文件的ContentType
var provider = new Microsoft.AspNetCore.StaticFiles.FileExtensionContentTypeProvider();
var memi = provider.Mappings[fileExt];
var fileName = Path.GetFileName(filepath);
return File(stream, memi, fileName);
}
/// <summary>
/// 上传图片
/// </summary>
/// <param name="environment"></param>
/// <returns></returns>
[HttpPost]
[Route("Pic")]
public async Task<MessageModel<string>> InsertPicture([FromServices]IHostingEnvironment environment)
{
var data = new MessageModel<string>();
string path = string.Empty;
string foldername = "images";
var files = Request.Form.Files;
if (files == null || !files.Any()) { data.msg = "请选择上传的文件。"; return data; }
//格式限制
var allowType = new string[] { "image/jpg", "image/png", "image/jpeg" };
string folderpath = Path.Combine(environment.WebRootPath, foldername);
if (!System.IO.Directory.Exists(folderpath))
{
System.IO.Directory.CreateDirectory(folderpath);
}
if (files.Any(c => allowType.Contains(c.ContentType)))
{
if (files.Sum(c => c.Length) <= 1024 * 1024 * 4)
{
//foreach (var file in files)
var file = files.FirstOrDefault();
string strpath = Path.Combine(foldername, DateTime.Now.ToString("MMddHHmmss") + file.FileName);
path = Path.Combine(environment.WebRootPath, strpath);
using (var stream = new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite))
{
await file.CopyToAsync(stream);
}
data = new MessageModel<string>()
{
response = strpath,
msg = "上传成功",
success = true,
};
return data;
}
else
{
data.msg = "图片过大";
return data;
}
}
else
{
data.msg = "图片格式错误";
return data;
}
}
// POST: api/Img
[HttpPost]
public void Post([FromBody] object formdata)
{
}
// PUT: api/Img/5
[HttpPut("{id}")]
public void Put(int id, [FromBody] string value)
{
}
// DELETE: api/ApiWithActions/5
[HttpDelete("{id}")]
public void Delete(int id)
{
}
}
}