jquery ajax实现文件上传功能实例代码

ZHOUJIANTANK

2018-04-18

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: "http://192.168.1.101:8080/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: "http://192.168.1.101:8080/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: "http://192.168.1.101:8080/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>
 <div class="box">+</div>
 <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;

总结

ajax jquery 文件上传 formdata data