移动端web JS JDK上传文件 使用progress获取上传进度 无法正常使用

Posted 2023-04-11

这行代码 在电脑端执行的时候 可以正常使用 在iphone的浏览器的时候 无法上传 点击上传 页面没有任何反应 能解决的 加我好友 我发红包 QQ542846182
progress: function* (p)

//console.log('Progress: ' + p);

document.getElementById('progressNumber').innerhtml = p*100+ '%';

参考技术A //js部分varuploader=WebUploader.create(//选完文件后，是否自动上传。auto:true,..uploader.options.formData='UID':'001','UserName':'张三';后台取值（APS.NET）Request.Form["UID"]Request.Form["UserName"]即可

h5移动端实现图片文件上传

PC端上传文件多半用插件，引入flash都没关系，但是移动端要是还用各种冗余的插件估计得被喷死，项目里面需要做图片上传的功能，既然H5已经有相关的接口且兼容性良好，当然优先考虑用H5来实现。

 

JS代码：

<script type="text/javascript">
        function fileSelected() {
            var file = document.getElementById(‘fileToUpload‘).files[0];
            if (file) {
                var fileSize = 0;
                if (file.size > 1024 * 1024)
                    fileSize = (Math.round(file.size * 100 / (1024 * 1024)) / 100).toString() + ‘MB‘;
                else
                    fileSize = (Math.round(file.size * 100 / 1024) / 100).toString() + ‘KB‘;
 
                document.getElementById(‘fileName‘).innerHTML = ‘Name: ‘ + file.name;
                document.getElementById(‘fileSize‘).innerHTML = ‘Size: ‘ + fileSize;
                document.getElementById(‘fileType‘).innerHTML = ‘Type: ‘ + file.type;
            }
        }
 
        function uploadFile() {
            var fd = new FormData();
            fd.append("fileToUpload", document.getElementById(‘fileToUpload‘).files[0]);
            var xhr = new XMLHttpRequest();
            xhr.upload.addEventListener("progress", uploadProgress, false);
            xhr.addEventListener("load", uploadComplete, false);
            xhr.addEventListener("error", uploadFailed, false);
            xhr.addEventListener("abort", uploadCanceled, false);
            xhr.open("POST", "/Home/Upload");
            xhr.send(fd);
        }
 
        function uploadProgress(evt) {
            if (evt.lengthComputable) {
                var percentComplete = Math.round(evt.loaded * 100 / evt.total);
                document.getElementById(‘progressNumber‘).innerHTML = percentComplete.toString() + ‘%‘;
            }
            else {
                document.getElementById(‘progressNumber‘).innerHTML = ‘unable to compute‘;
            }
        }
 
        function uploadComplete(evt) {
            /* This event is raised when the server send back a response */
            alert(evt.target.responseText);
        }
 
        function uploadFailed(evt) {
            alert("There was an error attempting to upload the file.");
        }
 
        function uploadCanceled(evt) {
            alert("The upload has been canceled by the user or the browser dropped the connection.");
        }
    </script>

 

 

Html代码：

<h1>单文件上传</h1>
  <form id="form1" enctype="multipart/form-data" method="post" action="/Home/Upload">
    <div class="row">
      <label for="fileToUpload">Select a File to Upload</label><br />
      <input type="file" name="fileToUpload" id="fileToUpload" onchange="fileSelected();"/>
    </div>
    <div id="fileName"></div>
    <div id="fileSize"></div>
    <div id="fileType"></div>
    <div class="row">
      <input type="button" onclick="uploadFile()" value="Upload" />
    </div>
    <div id="progressNumber"></div>
  </form>

办公资源网址导航 https://www.wode007.com

 

后端代码：

1 public ActionResult Upload() {
2     HttpPostedFileBase file = Request.Files["fileToUpload"];
3     file.SaveAs(Server.MapPath("/upload/")+file.FileName);
4     return Content(file.FileName+"上传成功！");
5 }