尝试利用
json上传，处理
file对象
html
<div id="drop" > <div >Drop image here</div></div><br /><form id="upload"> <input type="file" name="file" id="file" multiple="true" accepts="image/*" /> <ul id="uploads"> <!-- The file uploads will be shown here --> </ul></form><div id="listTable"></div>
CSS
#uploads { display:block; position:relative; } #uploads li { list-style:none; } #drop { width: 90%; height: 100px; padding: 0.5em; float: left; margin: 10px; border: 8px dotted grey; } #drop.hover { border: 8px dotted green; } #drop.err { border: 8px dotted orangered; }js
var display = $("#uploads"); // cache `#uploads`, `this` at `$.ajax()`var droppable = $("#drop")[0]; // cache `#drop` selector$.ajaxSetup({ context: display, contentType: "application/json", dataType: "json", beforeSend: function (jqxhr, settings) { // pre-process `file` var file = JSON.parse( depreURIComponent(settings.data.split(/=/)[1]) ); // add `progress` element for each `file` var progress = $("<progress />", { "class": "file-" + (!!$("progress").length ? $("progress").length : "0"), "min": 0, "max": 0, "value": 0, "data-name": file.name }); this.append(progress, file.name + "<br />"); jqxhr.name = progress.attr("class"); }});var processFiles = function processFiles(event) { event.preventDefault(); // process `input[type=file]`, `droppable` `file` var files = event.target.files || event.dataTransfer.files; var images = $.map(files, function (file, i) { var reader = new FileReader(); var dfd = new $.Deferred(); reader.onload = function (e) { dfd.resolveWith(file, [e.target.result]) }; reader.readAsDataURL(new Blob([file], { "type": file.type })); return dfd.then(function (data) { return $.ajax({ type: "POST", url: "/echo/json/", data: { "file": JSON.stringify({ "file": data, "name": this.name, "size": this.size, "type": this.type }) }, xhr: function () { // do `progress` event stuff var uploads = this.context; var progress = this.context.find("progress:last"); var xhrUpload = $.ajaxSettings.xhr(); if (xhrUpload.upload) { xhrUpload.upload.onprogress = function (evt) { progress.attr({ "max": evt.total, "value": evt.loaded }) }; xhrUpload.upload.onloadend = function (evt) { var progressData = progress.eq(-1); console.log(progressData.data("name") + " upload complete..."); var img = new Image; $(img).addClass(progressData.eq(-1) .attr("class")); img.onload = function () { if (this.complete) { console.log( progressData.data("name") + " preview loading..." ); }; }; uploads.append("<br /><li>", img, "</li><br />"); }; } return xhrUpload; } }) .then(function (data, textStatus, jqxhr) { console.log(data) this.find("img[]") .attr("src", data.file) .before("<span>" + data.name + "</span><br />"); return data }, function (jqxhr, textStatus, errorThrown) { console.log(errorThrown); return errorThrown }); }) }); $.when.apply(display, images).then(function () { var result = $.makeArray(arguments); console.log(result.length, "uploads complete"); }, function err(jqxhr, textStatus, errorThrown) { console.log(jqxhr, textStatus, errorThrown) })};$(document).on("change", "input[name^=file]", processFiles);// process `droppable` eventsdroppable.ondragover = function () { $(this).addClass("hover"); return false;};droppable.ondragend = function () { $(this).removeClass("hover") return false;};droppable.ondrop = function (e) { $(this).removeClass("hover"); var image = Array.prototype.slice.call(e.dataTransfer.files) .every(function (img, i) { return /^image/.test(img.type) }); e.preventDefault(); // if `file`, file type `image` , process `file` if (!!e.dataTransfer.files.length && image) { $(this).find(".drop-area-label") .css("color", "blue") .html(function (i, html) { $(this).delay(3000, "msg").queue("msg", function () { $(this).css("color", "initial").html(html) }).dequeue("msg"); return "File dropped, processing file upload..."; }); processFiles(e); } else { // if dropped `file` _not_ `image` $(this) .removeClass("hover") .addClass("err") .find(".drop-area-label") .css("color", "darkred") .html(function (i, html) { $(this).delay(3000, "msg").queue("msg", function () { $(this).css("color", "initial").html(html) .parent("#drop").removeClass("err") }).dequeue("msg"); return "Please drop image file..."; }); };};PHP
<?php if (isset($_POST["file"])) { // do php stuff // call `json_enpre` on `file` object $file = json_enpre($_POST["file"]); // return `file` as `json` string echo $file; };
