这篇文章主要介绍了jquery ajax实现文件拖拽上传功能的实例代码,代码简单易懂,非常不错,具有参考借鉴价值,需要的朋友可以参考下

下面看下ajax实现文件上传

没有使用插件

一、单文件上传

<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <script src="https://cdn.bootcss.com/jquery/1.10.2/jquery.min.js"></script> <title></title> </head> <body> <form id="uploadForm" enctype="multipart/form-data"> 文件:<input id="file" type="file" name="file"/> </form> <button id="upload">上传文件</button> </body> <script type="text/javascript"> $(function () { $("#upload").click(function () { var formData = new FormData($('#uploadForm')[0]); $.ajax({ type: 'post', url: ":8080/springbootdemo/file/upload", data: formData, cache: false, processData: false, contentType: false, }).success(function (data) { alert(data); }).error(function () { alert("上传失败"); }); }); }); </script> </html>

二、多文件上传

<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <script src="https://cdn.bootcss.com/jquery/1.10.2/jquery.min.js"></script> <title></title> </head> <body> <form id="uploadForm" enctype="multipart/form-data"> 文件:<input type="file" name="file" multiple="multiple"/><br> </form> <button id="upload">上传文件</button> </body> <script type="text/javascript"> $(function () { $("#upload").click(function () { var formData = new FormData($('#uploadForm')[0]); $.ajax({ type: 'post', url: ":8080/springbootdemo/file/uploadFiles", data: formData, cache: false, processData: false, contentType: false, }).success(function (data) { alert(data); }).error(function () { alert("上传失败"); }); }); }); </script> </html>

这个是多选上传,关键是multiple="multiple"这个属性,另外使用的接口也是多文件上传的接口。

当然也可以使用单文件上传的模式,多次选择就可以了,只不过接口也是iyaoshiyong多文件上传的接口。

<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <script src="https://cdn.bootcss.com/jquery/1.10.2/jquery.min.js"></script> <title></title> </head> <body> <form id="uploadForm" enctype="multipart/form-data"> 文件:<input type="file" name="file"/><br> 文件:<input type="file" name="file"/><br> 文件:<input type="file" name="file"/><br> </form> <button id="upload">上传文件</button> </body> <script type="text/javascript"> $(function () { $("#upload").click(function () { var formData = new FormData($('#uploadForm')[0]); $.ajax({ type: 'post', url: ":8080/springbootdemo/file/uploadFiles", data: formData, cache: false, processData: false, contentType: false, }).success(function (data) { alert(data); }).error(function () { alert("上传失败"); }); }); }); </script> </html>

测试都通过了!!!

下面通过一段实例代码给大家介绍ajax拖拽上传功能的实现,具体代码如下;

AJAX拖拽上传功能,实现代码如下所示:

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> <style> .box { width: 300px; height: 300px; border: 1px solid #000; text-align: center; line-height: 300px; font-size: 40px; } </style> </head> <body> <p class="box">+</p> <script> var box = document.querySelector('.box'); box.ondragover = function (e) { e.preventDefault(); } box.ondrop = function (e) { console.log(e.dataTransfer) e.preventDefault(); var xhr = new XMLHttpRequest(); xhr.onreadystatechange = function () { if (xhr.readyState == 4 && xhr.status == 200) { console.log(xhr.responseText) } } xhr.open('POST', './server.php', true); var formdata = new FormData(); formdata.append('pic', e.dataTransfer.files[0]); formdata.append('name', 'luyao'); xhr.send(formdata); } </script> </body> </html> //server.php <?php $rand = rand(1,1000).'.jpg'; move_uploaded_file($_FILES['pic']['tmp_name'], './uploads/'.$rand); echo '/uploads/'.$rand;

上面是我整理给大家的,希望今后会对大家有帮助。

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