CompetitionAPI_dotnet/CompetitionAPI/Controllers/UploadFileController.cs

using Competition.Common.Util;
using CompetitionAPI.Util;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Newtonsoft.Json;
using NPOI.HPSF;

namespace CompetitionAPI.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class UploadFileController :  BaseHandlerController
    {
        Competition.Mysql.BLL.uplaod_file bll = new Competition.Mysql.BLL.uplaod_file();

        private readonly IWebHostEnvironment _env;

        public static readonly string Dir = "UploadFile";
        public UploadFileController(IHttpContextAccessor IHttpContextAccessor, IWebHostEnvironment env, IConfiguration iconfiguration)
        {
            Configuration = iconfiguration;
            _env = env;
            context = IHttpContextAccessor.HttpContext!;
            CrossDomain();
        }

        public bool saveFile(string Dir, IFormFile file, string fileId, out string server_path)
        {
            server_path = "";
            if (null == file)
            {
                return false;
            }
            var directory = Path.Combine(_env.WebRootPath, Dir);
            if (!Directory.Exists(directory))
            {
                Directory.CreateDirectory(directory);
            }
            var extension = file.FileName.Substring(file.FileName.LastIndexOf("."));
            string NewfileName = fileId + extension;

            //path = Path.Combine(directory, file.FileName);
            string path = Path.Combine(directory, NewfileName);
            using (var stream = new FileStream(path, FileMode.Create))
            {
                file.CopyTo(stream);
            }
            server_path = "~/" + Dir + "/" + NewfileName;
            return true;
        }
        /// <summary>
        /// 上传更新图片
        /// </summary>
        /// <returns></returns>
        //[Authorize]
        [HttpPost, DisableRequestSizeLimit]
        [Route("upload_image")]
        public JsonResult upload_image()
        {
            try
            {
                JsonResult ret;
                bool state= false;
                var operation_type = GetValue("operation_type");
                if(operation_type== "upload")
                {
                    var image_name = GetValue("image_name");
                    if (string.IsNullOrEmpty(image_name))
                    {
                        ret = GetResult(false, "image_name不能为空");
                        return ret;
                    }
                    var model = new Competition.Mysql.Model.uplaod_file();
                    model.FileId = Tool.GetId();
                    model.FileName = image_name;
                    var file_business_photo = GetFile("image_file");
                    if (saveFile(Dir, file_business_photo, Tool.GetNextId(model.FileId, 1), out string path))
                    {
                        model.FilePath = path;
                    }
                    if (bll.Add(model))
                    {
                        state= true;
                    }
                    else
                    {
                       state= false;
                    }
                    
                }
                else if (operation_type == "update")
                {
                    var image_url= GetValue("image_url");
                    var list = bll.GetModelList(" FilePath='" + image_url + "'").FirstOrDefault();
                    if(list != null)
                    {
                        var image_name = GetValue("image_name");
                        if (string.IsNullOrEmpty(image_name))
                        {
                            ret = GetResult(false, "image_name不能为空");
                            return ret;
                        }
                        list.FileName = image_name;
                        var file_business_photo = GetFile("image_file");
                        if (saveFile(Dir, file_business_photo, Tool.GetNextId(list.FileId, 1), out string path))
                        {
                            list.FilePath = path;
                        }
                        if (bll.Update(list))
                        {
                            state = true;
                        }
                        else
                        {
                            state = false;
                        }
                    }
                   

                }
                if (state)
                {
                    return GetResult(true, "成功");
                }
                else
                {
                    return GetResult(false, "失败");
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLog(ex.Message + "，行号：" + ex.StackTrace);
                return GetResult(false, "发生错误，请联系管理员");
            }
        }
        /// <summary>
        /// 获取所有图片
        /// </summary>
        /// <returns></returns>
        [Route("get_images")]
        public JsonResult get_images()
        {
            try
            {
                var list = bll.GetModelList("");
                var result = GetResult(true, list);
                return result;
            }
            catch (Exception ex)
            {
                LogHelper.WriteLog(ex.Message + "，行号：" + ex.StackTrace);
                return GetResult(false, "发生错误，请联系管理员");
            }
        }
    }
}