本文实例为大家分享了FormData上传多个文件的具体代码,供大家参考,具体内容如下由于项
本文实例为大家分享了FormData上传多个文件的具体代码,供大家参考,具体内容如下
由于项目中使用到,特此写个Demo
html代码:
<html>
<head>
<title>Title</title>
<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
</head>
<body>
<form enctype="multipart/form-data" id="form_example">
<input type="file" id="files" multiple/><br/><br/>
<input type="submit" value="提交"/>
</form>
<div id='file-list-display'></div>
</body>
</html>
js代码:
<script type="text/javascript">
$(document).ready(function () {
var fileList = [];
var fileCatcher = document.getElementById('form_example');
var files = document.getElementById("files"), renderFileList;
var fileListDisplay = document.getElementById('file-list-display'), sendFile;
fileCatcher.addEventListener("submit", function (event) {
event.preventDefault();
//上传文件
sendFile();
});
files.addEventListener("change", function (event) {
for (var i = 0; i < files.files.length; i++) {
fileList.push(files.files[i]);
}
renderFileList();
});
renderFileList = function () {
fileListDisplay.innerHTML = '';
fileList.forEach(function (file, index) {
var fileDisplayEl = document.createElement("p");
fileDisplayEl.innerHTML = (index + 1) + ":" + file.name;
fileListDisplay.appendChild(fileDisplayEl);
})
};
sendFile = function () {
var formData = new FormData();
var request = new XMLHttpRequest();
//循环添加到formData中
fileList.forEach(function (file) {
formData.append('files', file, file.name);
})
request.open("POST", "/test/upload.do");
request.send(formData);
}
})
</script>
后端使用Spring MVC接收前端文件
配置multipart解析器:
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"
p:defaultEncoding="utf-8"/>
Controller:
@RequestMapping("/upload.do")
@ResponseBody
public Object upload(@RequestParam MultipartFile[] files) {
System.out.println(files.length);
return "ok";
}
前端页面:
请求:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。
FormData上传多个文件 FormData上传多文件 FormData上传文件