Reference links:
1. https://www.imooc.com/article/69973 (Ajax simple method to achieve a variety of asynchronous file upload)
2. https://www.cnblogs.com/hesijian/p/9199231.html (distal portion)
3. https://blog.csdn.net/qq_36489998/article/details/82779601 (ajax dynamic upload multiple files)
4. https://blog.csdn.net/technologys/article/details/81674188 (back and front end)
5. https://www.imooc.com/article/69973 (Ajax simple method to achieve a variety of asynchronous file upload)
Description:
By means of a front end portion FormData objects, h5 FormData a newly introduced class, the form data can be simulated;
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>文件上传</title>
</head>
<body>
<form id= "uploadForm">
<p >指定文件名： <input type="text" name="filename" value= ""/></p >
<p >上传文件： <input type="file" name="file1" id="file1" multiple="multiple" /></p>
<p >上传文件： <input type="file" name="file2" id="file2" /></p>
<p >上传文件： <input type="file" name="file3" id="file3" /></p>
<input type="button" value="上传" onclick="doUpload()" />
</form>
<script type="text/javascript" src="lib/jquery/1.9.1/jquery.min.js"></script>
<script type="text/javascript" src="lib/layer/2.4/layer.js"></script>
<script type="text/javascript" src="js/common.js"></script>
<script type="text/javascript">
//获取token
var token = parent.window.document.getElementById("token").value;
function doUpload() {
var formData = new FormData();
formData.append("token", token);
formData.append("file1", $('#file1')[0].files[0]);
formData.append("file2", $('#file2')[0].files[0]);
formData.append("file3", $('#file3')[0].files[0]);
$.ajax({
url: 'bookController/uploadMult' ,
type: 'post',
data: formData,
cache: false,
processData: false,
contentType: false,
async: false
}).done(function(res) {
}).fail(function(res) {
});
}
</script>
</body>
</html>Background means MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request; implemented
