.NetCore 上传文件 解除大文件限制

1.设置允许无限大

public class Program
{
    public static void Main(string[] args){
    CreateWebHostBuilder(args).Build().Run();}public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>WebHost.CreateDefaultBuilder(args).UseUrls(new string[]{
    "http://*:8081","https://*:8082"}).UseStartup<Startup>().UseKestrel(options =>{
    //控制中间件允许的上传文件大小为：不限制options.Limits.MaxRequestBodySize = null;});}

2.上传接口与验证接口

/// <summary>/// 上传文件/// </summary>/// <returns></returns>[HttpPost]public ActionResult UploadFile(string uId){
    string basePath = $"{Tools.basePath}\\";//string name = Request.Query["address"];string imgPath = $"{basePath}";string dicPath = imgPath;if (!Directory.Exists(dicPath)){
    Directory.CreateDirectory(dicPath);}var img = Request.Form.Files[0];if (img == null){
    return Content("上传失败");}string fileName = "uId"+uId.ToString()+"_"+$"{DateTime.Now.ToString("yyyy_MM_dd[HH-mm]")}_"+ img.FileName;//Guid.NewGuid().ToString() + ext;string filePath = Path.Combine(dicPath, fileName);if (System.IO.File.Exists(filePath)){
    System.IO.File.Delete(filePath);}using (FileStream fs = System.IO.File.Create(filePath)){
    img.CopyTo(fs);fs.Flush();}return Json(new {
     file_Name = fileName });}/// <summary>/// webUpLoader验证文件上传成功/// </summary>/// <param name="filename"></param>/// <param name="uId"></param>/// <returns></returns>[HttpPost]public IActionResult Success(string filename,string uId){
    string basePath = $"{Tools.basePath}\\";string imgPath = $"{basePath}";if (!Directory.Exists(imgPath)){
    Response.StatusCode = 400;return Json(new {
     state = "eroor" });}imgPath += "uId" + uId.ToString() + "_" + $"{DateTime.Now.ToString("yyyy_MM_dd[HH-mm]")}_" + filename;if (!System.IO.File.Exists(imgPath)){
    Response.StatusCode = 400;return Json(new {
     state = "eroor" });}Response.StatusCode = 200;return Json(new {
     state = "success" });}

3.网页代码

@{ViewData["Title"] = "Submit";
}<link rel="stylesheet" type="text/css" href="https://cdn.bootcss.com/webuploader/0.1.1/webuploader.css">
<script src="~/lib/jquery/dist/jquery.js"></script>
<script src="https://cdn.bootcss.com/webuploader/0.1.1/webuploader.js"></script><div><h1>用户id: @ViewBag.uId</h1><h1>您所要上传的文件是：</h1>  <div><span style="color:red">目前只支持PDF的打印</span></div>
</div>
<div id="uploader" class="wu-example"><!--用来存放文件信息--><ul id="thelist" class="list-group"></ul><div class="uploader-list"></div><div class="btns"><div id="picker" style="float:left;">选择文件</div><input id="ctlBtn" type="button" value="开始上传" class="btn btn-default" style="width:78px;height:37px;margin-left:10px;" /></div>
</div><script>$(function () {
     initUpload();})//初始化上传控件function initUpload() {
     var $ = jQuery;var $list = $('#thelist');var uploader = WebUploader.create({
     // 选完文件后，是否自动上传。auto: false,// swf文件路径swf: 'https://cdn.bootcss.com/webuploader/0.1.1/Uploader.swf',// 文件接收服务端。server: encodeURI('UploadFile?' +'uId=@ViewBag.uId'), //+'&course_name='+'ViewBag.course_name'// 选择文件的按钮。可选。// 内部根据当前运行是创建，可能是input元素，也可能是flash.pick: '#picker',multiple: false, // 选择多个chunked: false,// 开起分片上传。threads: 1, // 上传并发数。允许同时最大上传进程数。// 不压缩image, 默认如果是jpeg，文件上传前会压缩一把再上传！resize: false});// 当有文件被添加进队列的时候uploader.on('fileQueued', function (file) {
     $list.append('<li id="' + file.id + '" class="list-group-item">' +'<span class="fileName" dataValue="">' + file.name + '</span>' +'<span class="state" style=\" margin-left: 10px;\">等待上传</span>' +'<span class="filepath" dataValue="0" style=\" margin-left: 10px;display: none;\"></span>' +'<span class="download" style="margin-left:20px;"></span>' +'<span class="webuploadDelbtn"style=\"float: right;display: none; \">删除<span>' +'</li>');});// 文件上传过程中创建进度条实时显示。uploader.on('uploadProgress', function (file, percentage) {
     var $li = $('#' + file.id),$percent = $li.find('.progress .progress-bar');// 避免重复创建if (!$percent.length) {
     $percent = $('<div class="progress progress-striped active">' +'<div class="progress-bar" role="progressbar" style="width: 0%">' +'</div>' +'</div>').appendTo($li).find('.progress-bar');}$li.find('span.state').text('上传中');$percent.css('width', percentage * 100 + '%');});// 文件上传成功，给item添加成功class, 用样式标记上传成功。uploader.on('uploadSuccess', function (file, response) {
     var $li = $('#' + file.id);//$('#' + file.id).find('span.state').text('正在上传');$.post('Success', {
      fileName: file.name, uId:@ViewBag.uId }, function (data) {
     $li.find('span.state').html("上传成功");$li.find('span.filepath').attr("dataValue", 1);$li.find('span.fileName').attr("dataValue", data.filename);$li.find('span.fileName').html(data.filename);//$li.find('span.download').html("<a href=\"../../PublicInfoManage/Upload/DownFile?filePath=" + data.filepath + "&amp;fileName=" + data.filename + "\">下载</a>")//$li.find('span.webuploadDelbtn').show();$li.find('span.filepath').html(data.filepath);//增加列表存储files.push(data);}).fail(function () {
     $('#' + file.id).find('span.state').text("上传失败");});});// 文件上传失败，显示上传出错。uploader.on('uploadError', function (file, reason) {
     $('#' + file.id).find('p.state').text(reason);});// 完成上传完了，成功或者失败，先删除进度条。uploader.on('uploadComplete', function (file) {
     $('#' + file.id).find('.progress').fadeOut();});//所有文件上传完毕uploader.on("uploadFinished", function () {
     //提交表单});//开始上传$("#ctlBtn").click(function () {
     uploader.upload();});//删除$list.on("click", ".webuploadDelbtn", function () {
     debuggervar $ele = $(this);var id = $ele.parent().attr("id");var file = uploader.getFile(id);uploader.removeFile(file);$ele.parent().remove();//移除数组var destFile = findFile(file.name)var index = files.indexOf(destFile);if (index > -1) {
     files.splice(index, 1);}});}</script>
@*<script>$('#upload-container').click(function (event) {
     $("#picker").find('input').click();});var uploader = WebUploader.create({
     auto: true,// 选完文件后，是否自动上传。swf: 'https://cdn.bootcss.com/webuploader/0.1.1/Uploader.swf',// swf文件路径server: "Upload",// 文件接收服务端。dnd: '#upload-container',pick: '#picker',// 内部根据当前运行是创建，可能是input元素，也可能是flash. 这里是div的idfileNumLimit: 1,multiple: false, // 选择多个chunked: false,// 开起分片上传。threads: 1, // 上传并发数。允许同时最大上传进程数。method: 'POST', // 文件上传方式，POST或者GET。fileSizeLimit: 1024 * 1024 * 100 * 100, //验证文件总大小是否超出限制, 超出则不允许加入队列。fileSingleSizeLimit: 1024 * 1024 * 100, //验证单个文件大小是否超出限制, 超出则不允许加入队列。fileVal: 'file' // [默认值：'file'] 设置文件上传域的name。});uploader.on('fileQueued', function (file) {
     count++;// 选中文件时要做的事情，比如在页面中显示选中的文件并添加到文件列表，获取文件的大小，文件类型等console.log(file.ext);// 获取文件的后缀console.log(file.size);// 获取文件的大小console.log(file.name);var html = '<div class="upload-item"><span>上传的文件名：' + file.name + '</span><span data-file_id="' + file.id + '" class="btn-retry">重试</span><div class="percentage ' + file.id + '" style="width: 0%;"></div></div>';$('#upload-list').append(html);});uploader.on('uploadProgress', function (file, percentage) {
     console.log(percentage * 100 + '%');var width = $('.upload-item').width();$('.' + file.id).width(width * percentage);});uploader.on('uploadSuccess', function (file, response) {
     console.log(file.id + "传输成功");//alert(response.Path);layer.msg("文件上传成功~请点击转换按钮！");alreadyFileName = response.Path;fileTime = response.UpdataTime;$("#startConvert").attr("style", "display:block;");});uploader.on('uploadError', function (file) {
     console.log(file);console.log(file.id + 'upload error');});$('#upload-list').on('click', '.upload-item .btn-delete', function () {
     // 从文件队列中删除某个文件idfile_id = $(this).data('file_id');// uploader.removeFile(file_id); // 标记文件状态为已取消uploader.removeFile(file_id, true); // 从queue中删除console.log(uploader.getFiles());});$('#upload-list').on('click', '.btn-retry', function () {
     uploader.retry($(this).data('file_id'));});uploader.on('uploadComplete', function (file) {
     console.log(uploader.getFiles());});</script>*@