删除区域getAcceptedFiles内容数据？

Question

在单独的函数中使用getAcceptedFiles手动处理文件时，如何获得文件的内容？每个图像返回一个dataURL与base64，这是很好的，并允许我上传照片到我的节点服务器成功。但是任何其他文件(如:视频、pdf、文档等)都不返回dataURL。我找到并测试了这个answer，但它只读取文件。请看看我的例子，自己试试看。上传图片并点击上传文件。您将看到dataURL和base64。然后试着用一份文件。没有数据。那么，如何获取其他类型文件的内容呢？

​

Dropzone.autoDiscover = false;

var myDropzone = new Dropzone('.dropzone-file', {
url: "https://keenthemes.com/scripts/void.php", // Set the url for your upload script location
paramName: "file", 
addRemoveLinks: true,
uploadMultiple: true,
autoProcessQueue: false,
});

$('.upload-files').on('click', function() {
var files = $('.dropzone-file').get(0).dropzone.getAcceptedFiles();

//upload bar
$('.dz-upload').addClass('dz-progress-bar');

// try upload image and other docs to see result
console.log(files);
});

.dropzone-file{
border: 1px dashed green;
padding: 1%;
text-align: center;
}
.dropzone-file:hover{
cursor:pointer;
background:whitesmoke;
}
@-webkit-keyframes passing-through {
    0% {
        opacity: 0;
        -webkit-transform: translateY(40px);
        -moz-transform: translateY(40px);
        -ms-transform: translateY(40px);
        -o-transform: translateY(40px);
        transform: translateY(40px);
    }
    30%,
    70% {
        opacity: 1;
        -webkit-transform: translateY(0px);
        -moz-transform: translateY(0px);
        -ms-transform: translateY(0px);
        -o-transform: translateY(0px);
        transform: translateY(0px);
    }
    100% {
        opacity: 0;
        -webkit-transform: translateY(-40px);
        -moz-transform: translateY(-40px);
        -ms-transform: translateY(-40px);
        -o-transform: translateY(-40px);
        transform: translateY(-40px);
    }
}
@-moz-keyframes passing-through {
    0% {
        opacity: 0;
        -webkit-transform: translateY(40px);
        -moz-transform: translateY(40px);
        -ms-transform: translateY(40px);
        -o-transform: translateY(40px);
        transform: translateY(40px);
    }
    30%,
    70% {
        opacity: 1;
        -webkit-transform: translateY(0px);
        -moz-transform: translateY(0px);
        -ms-transform: translateY(0px);
        -o-transform: translateY(0px);
        transform: translateY(0px);
    }
    100% {
        opacity: 0;
        -webkit-transform: translateY(-40px);
        -moz-transform: translateY(-40px);
        -ms-transform: translateY(-40px);
        -o-transform: translateY(-40px);
        transform: translateY(-40px);
    }
}
@keyframes passing-through {
    0% {
        opacity: 0;
        -webkit-transform: translateY(40px);
        -moz-transform: translateY(40px);
        -ms-transform: translateY(40px);
        -o-transform: translateY(40px);
        transform: translateY(40px);
    }
    30%,
    70% {
        opacity: 1;
        -webkit-transform: translateY(0px);
        -moz-transform: translateY(0px);
        -ms-transform: translateY(0px);
        -o-transform: translateY(0px);
        transform: translateY(0px);
    }
    100% {
        opacity: 0;
        -webkit-transform: translateY(-40px);
        -moz-transform: translateY(-40px);
        -ms-transform: translateY(-40px);
        -o-transform: translateY(-40px);
        transform: translateY(-40px);
    }
}
@-webkit-keyframes slide-in {
    0% {
        opacity: 0;
        -webkit-transform: translateY(40px);
        -moz-transform: translateY(40px);
        -ms-transform: translateY(40px);
        -o-transform: translateY(40px);
        transform: translateY(40px);
    }
    30% {
        opacity: 1;
        -webkit-transform: translateY(0px);
        -moz-transform: translateY(0px);
        -ms-transform: translateY(0px);
        -o-transform: translateY(0px);
        transform: translateY(0px);
    }
}
@-moz-keyframes slide-in {
    0% {
        opacity: 0;
        -webkit-transform: translateY(40px);
        -moz-transform: translateY(40px);
        -ms-transform: translateY(40px);
        -o-transform: translateY(40px);
        transform: translateY(40px);
    }
    30% {
        opacity: 1;
        -webkit-transform: translateY(0px);
        -moz-transform: translateY(0px);
        -ms-transform: translateY(0px);
        -o-transform: translateY(0px);
        transform: translateY(0px);
    }
}
@keyframes slide-in {
    0% {
        opacity: 0;
        -webkit-transform: translateY(40px);
        -moz-transform: translateY(40px);
        -ms-transform: translateY(40px);
        -o-transform: translateY(40px);
        transform: translateY(40px);
    }
    30% {
        opacity: 1;
        -webkit-transform: translateY(0px);
        -moz-transform: translateY(0px);
        -ms-transform: translateY(0px);
        -o-transform: translateY(0px);
        transform: translateY(0px);
    }
}
@-webkit-keyframes pulse {
    0% {
        -webkit-transform: scale(1);
        -moz-transform: scale(1);
        -ms-transform: scale(1);
        -o-transform: scale(1);
        transform: scale(1);
    }
    10% {
        -webkit-transform: scale(1.1);
        -moz-transform: scale(1.1);
        -ms-transform: scale(1.1);
        -o-transform: scale(1.1);
        transform: scale(1.1);
    }
    20% {
        -webkit-transform: scale(1);
        -moz-transform: scale(1);
        -ms-transform: scale(1);
        -o-transform: scale(1);
        transform: scale(1);
    }
}
@-moz-keyframes pulse {
    0% {
        -webkit-transform: scale(1);
        -moz-transform: scale(1);
        -ms-transform: scale(1);
        -o-transform: scale(1);
        transform: scale(1);
    }
    10% {
        -webkit-transform: scale(1.1);
        -moz-transform: scale(1.1);
        -ms-transform: scale(1.1);
        -o-transform: scale(1.1);
        transform: scale(1.1);
    }
    20% {
        -webkit-transform: scale(1);
        -moz-transform: scale(1);
        -ms-transform: scale(1);
        -o-transform: scale(1);
        transform: scale(1);
    }
}
@keyframes pulse {
    0% {
        -webkit-transform: scale(1);
        -moz-transform: scale(1);
        -ms-transform: scale(1);
        -o-transform: scale(1);
        transform: scale(1);
    }
    10% {
        -webkit-transform: scale(1.1);
        -moz-transform: scale(1.1);
        -ms-transform: scale(1.1);
        -o-transform: scale(1.1);
        transform: scale(1.1);
    }
    20% {
        -webkit-transform: scale(1);
        -moz-transform: scale(1);
        -ms-transform: scale(1);
        -o-transform: scale(1);
        transform: scale(1);
    }
}
.dropzone-file,
.dropzone-file * {
    box-sizing: border-box;
}
.dropzone-file {
    min-height: 150px;
    border: 2px solid rgba(0, 0, 0, 0.3);
    background: #fff;
    padding: 20px 20px;
}
.dropzone-file.dz-clickable {
    cursor: pointer;
}
.dropzone-file.dz-clickable * {
    cursor: default;
}
.dropzone-file.dz-clickable .dz-message,
.dropzone-file.dz-clickable .dz-message * {
    cursor: pointer;
}
.dropzone-file.dz-started .dz-message {
    display: none;
}
.dropzone-file.dz-drag-hover {
    border-style: solid;
}
.dropzone-file.dz-drag-hover .dz-message {
    opacity: 0.5;
}
.dropzone-file .dz-message {
    text-align: center;
    margin: 2em 0;
}
.dropzone-file .dz-message .dz-button {
    background: none;
    color: inherit;
    border: none;
    padding: 0;
    font: inherit;
    cursor: pointer;
    outline: inherit;
}
.dropzone-file .dz-preview {
    position: relative;
    display: inline-block;
    vertical-align: top;
    margin: 16px;
    min-height: 100px;
}
.dropzone-file .dz-preview:hover {
    z-index: 1000;
}
.dropzone-file .dz-preview:hover .dz-details {
    opacity: 1;
}
.dropzone-file .dz-preview.dz-file-preview .dz-image {
    border-radius: 20px;
    background: #999;
    background: linear-gradient(to bottom, #eee, #ddd);
}
.dropzone-file .dz-preview.dz-file-preview .dz-details {
    opacity: 1;
}
.dropzone-file .dz-preview.dz-image-preview {
    background: #fff;
}
.dropzone-file .dz-preview.dz-image-preview .dz-details {
    -webkit-transition: opacity 0.2s linear;
    -moz-transition: opacity 0.2s linear;
    -ms-transition: opacity 0.2s linear;
    -o-transition: opacity 0.2s linear;
    transition: opacity 0.2s linear;
}
.dropzone-file .dz-preview .dz-remove {
    font-size: 14px;
    text-align: center;
    display: block;
    cursor: pointer;
    border: none;
}
.dropzone-file .dz-preview .dz-remove:hover {
    text-decoration: underline;
}
.dropzone-file .dz-preview:hover .dz-details {
    opacity: 1;
}
.dropzone-file .dz-preview .dz-details {
    z-index: 20;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    font-size: 13px;
    min-width: 100%;
    max-width: 100%;
    padding: 2em 1em;
    text-align: center;
    color: rgba(0, 0, 0, 0.9);
    line-height: 150%;
}
.dropzone-file .dz-preview .dz-details .dz-size {
    margin-bottom: 1em;
    font-size: 16px;
}
.dropzone-file .dz-preview .dz-details .dz-filename {
    white-space: nowrap;
}
.dropzone-file .dz-preview .dz-details .dz-filename:hover span {
    border: 1px solid rgba(200, 200, 200, 0.8);
    background-color: rgba(255, 255, 255, 0.8);
}
.dropzone-file .dz-preview .dz-details .dz-filename:not(:hover) {
    overflow: hidden;
    text-overflow: ellipsis;
}
.dropzone-file .dz-preview .dz-details .dz-filename:not(:hover) span {
    border: 1px solid transparent;
}
.dropzone-file .dz-preview .dz-details .dz-filename span,
.dropzone-file .dz-preview .dz-details .dz-size span {
    background-color: rgba(255, 255, 255, 0.4);
    padding: 0 0.4em;
    border-radius: 3px;
}
.dropzone-file .dz-preview:hover .dz-image img {
    -webkit-transform: scale(1.05, 1.05);
    -moz-transform: scale(1.05, 1.05);
    -ms-transform: scale(1.05, 1.05);
    -o-transform: scale(1.05, 1.05);
    transform: scale(1.05, 1.05);
    -webkit-filter: blur(8px);
    filter: blur(8px);
}
.dropzone-file .dz-preview .dz-image {
    border-radius: 20px;
    overflow: hidden;
    width: 120px;
    height: 120px;
    position: relative;
    display: block;
    z-index: 10;
}
.dropzone-file .dz-preview .dz-image img {
    display: block;
}
.dropzone-file .dz-preview.dz-success .dz-success-mark {
    -webkit-animation: passing-through 3s cubic-bezier(0.77, 0, 0.175, 1);
    -moz-animation: passing-through 3s cubic-bezier(0.77, 0, 0.175, 1);
    -ms-animation: passing-through 3s cubic-bezier(0.77, 0, 0.175, 1);
    -o-animation: passing-through 3s cubic-bezier(0.77, 0, 0.175, 1);
    animation: passing-through 3s cubic-bezier(0.77, 0, 0.175, 1);
}
.dropzone-file .dz-preview.dz-error .dz-error-mark {
    opacity: 1;
    -webkit-animation: slide-in 3s cubic-bezier(0.77, 0, 0.175, 1);
    -moz-animation: slide-in 3s cubic-bezier(0.77, 0, 0.175, 1);
    -ms-animation: slide-in 3s cubic-bezier(0.77, 0, 0.175, 1);
    -o-animation: slide-in 3s cubic-bezier(0.77, 0, 0.175, 1);
    animation: slide-in 3s cubic-bezier(0.77, 0, 0.175, 1);
}
.dropzone-file .dz-preview .dz-success-mark,
.dropzone-file .dz-preview .dz-error-mark {
    pointer-events: none;
    opacity: 0;
    z-index: 500;
    position: absolute;
    display: block;
    top: 50%;
    left: 50%;
    margin-left: -27px;
    margin-top: -27px;
}
.dropzone-file .dz-preview .dz-success-mark svg,
.dropzone-file .dz-preview .dz-error-mark svg {
    display: block;
    width: 54px;
    height: 54px;
}
.dropzone-file .dz-preview.dz-processing .dz-progress {
    opacity: 1;
    -webkit-transition: all 0.2s linear;
    -moz-transition: all 0.2s linear;
    -ms-transition: all 0.2s linear;
    -o-transition: all 0.2s linear;
    transition: all 0.2s linear;
}
.dropzone-file .dz-preview.dz-complete .dz-progress {
    opacity: 0;
    -webkit-transition: opacity 0.4s ease-in;
    -moz-transition: opacity 0.4s ease-in;
    -ms-transition: opacity 0.4s ease-in;
    -o-transition: opacity 0.4s ease-in;
    transition: opacity 0.4s ease-in;
}
.dropzone-file .dz-preview:not(.dz-processing) .dz-progress {
    -webkit-animation: pulse 6s ease infinite;
    -moz-animation: pulse 6s ease infinite;
    -ms-animation: pulse 6s ease infinite;
    -o-animation: pulse 6s ease infinite;
    animation: pulse 6s ease infinite;
}
.dropzone-file .dz-preview .dz-progress {
    opacity: 1;
    z-index: 1000;
    pointer-events: none;
    position: absolute;
    height: 16px;
    left: 50%;
    top: 50%;
    margin-top: -8px;
    width: 80px;
    margin-left: -40px;
    background: rgba(255, 255, 255, 0.9);
    -webkit-transform: scale(1);
    border-radius: 8px;
    overflow: hidden;
}
.dropzone-file .dz-preview .dz-progress .dz-upload {
    background: #333;
    background: linear-gradient(to bottom, #666, #444);
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 0;
    -webkit-transition: width 300ms ease-in-out;
    -moz-transition: width 300ms ease-in-out;
    -ms-transition: width 300ms ease-in-out;
    -o-transition: width 300ms ease-in-out;
    transition: width 300ms ease-in-out;
}
.dropzone-file .dz-preview.dz-error .dz-error-message {
    display: block;
}
.dropzone-file .dz-preview.dz-error:hover .dz-error-message {
    opacity: 1;
    pointer-events: auto;
}
.dropzone-file .dz-preview .dz-error-message {
    pointer-events: none;
    z-index: 1000;
    position: absolute;
    display: block;
    display: none;
    opacity: 0;
    -webkit-transition: opacity 0.3s ease;
    -moz-transition: opacity 0.3s ease;
    -ms-transition: opacity 0.3s ease;
    -o-transition: opacity 0.3s ease;
    transition: opacity 0.3s ease;
    border-radius: 8px;
    font-size: 13px;
    top: 130px;
    left: -10px;
    width: 140px;
    background: #be2626;
    background: linear-gradient(to bottom, #be2626, #a92222);
    padding: 0.5em 1.2em;
    color: #fff;
}
.dropzone-file .dz-preview .dz-error-message:after {
    content: "";
    position: absolute;
    top: -6px;
    left: 64px;
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-bottom: 6px solid #be2626;
}
.dz-progress-bar {
    width: 0;
    animation: progress 1.5s ease-in-out forwards;
  } 
  
  @keyframes progress {
    from {
      width: 0;
    }
    to {
      width: 100%;
    }
  } 
  @keyframes show  {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://unpkg.com/dropzone@5/dist/min/dropzone.min.js"></script>
<link rel="stylesheet" href="https://unpkg.com/dropzone@5/dist/min/dropzone.min.css" type="text/css" />

<!--begin::Dropzone-->
<div class="dropzone-file fileuploader">
<!--begin::Message-->
<div class="dz-message needsclick">
<!--begin::Icon-->
<i class="bi bi-file-earmark-arrow-up text-primary fs-3x"></i>
<!--end::Icon-->

<!--begin::Info-->
<div class="ms-4">
<h3 class="fs-5 fw-bolder text-gray-900 mb-1">Drop files here or click to upload.</h3>
<span class="fs-7 fw-bold text-gray-400">Upload any kind of files</span>
</div>
<!--end::Info-->
</div>
</div>
<!--end::Dropzone-->

<button class='upload-files'>Upload Files</button>

​

Answer 1

找到答案了。一丝不苟的向前。循环遍历文件并调用FileReader。

$('.upload-files').on('click', function() {

//collect files
var files = $('.dropzone-file').get(0).dropzone.getAcceptedFiles();

//iteration over files
files.forEach(function(resp){

    var reader = new FileReader();
        reader.onload = () => {
            var fileAsBinaryString = reader.result;
            // do whatever you want with the file content
            //console.log(fileAsBinaryString);
        };
       reader.readAsArrayBuffer(resp);//arraybuffer is what you  looking for 

console.log(reader);//boom 

})