java Springboot实现多文件上传功能
前端采用layui框架,讲解多文件上传的完整实现功能。
前端html重点代码如下:
<div class="layui-form-item">
<label class="layui-form-label">上传文件</label>
<div class="layui-input-block">
<div class="layui-upload">
<button type="button" class="layui-btn layui-btn-normal" id="testList">选择多文件</button>
<div class="layui-upload-list">
<table class="layui-table">
<thead>
<tr><th>文件名</th>
<th>大小</th>
<th>状态</th>
<th>操作</th>
</tr></thead>
<tbody id="demoList"></tbody>
</table>
</div>
<button type="button" class="layui-btn" id="testListAction">开始上传</button>
</div>
</div>
</div>
相应的,js代码如下所示:
layui.use('upload', function(){
var $ = layui.jquery,upload = layui.upload;
//多文件列表示例
var demoListView = $('#demoList')
,uploadListIns = upload.render({
elem: '#testList'
,url: '/upload'
,accept: 'file'
,data:{} //可放扩展数据 key-value
,multiple: true
,auto: false
,bindAction: '#testListAction'
,choose: function(obj){
var files = this.files = obj.pushFile(); //将每次选择的文件追加到文件队列
//读取本地文件
obj.preview(function(index, file, result){
var tr = $(['<tr id="upload-'+ index +'">'
,'<td>'+ file.name +'</td>'
,'<td>'+ (file.size/1014).toFixed(1) +'kb</td>'
,'<td>等待上传</td>'
,'<td>'
,'<button class="layui-btn layui-btn-mini demo-reload layui-hide">重传</button>'
,'<button class="layui-btn layui-btn-mini layui-btn-danger demo-delete">删除</button>'
,'</td>'
,'</tr>'].join(''));
//单个重传
tr.find('.demo-reload').on('click', function(){
obj.upload(index, file);
});
//删除
tr.find('.demo-delete').on('click', function(){
delete files[index]; //删除对应的文件
tr.remove();
uploadListIns.config.elem.next()[0].value = ''; //清空 input file 值,以免删除后出现同名文件不可选
});
demoListView.append(tr);
});
}
,done: function(res, index, upload){
if(res.code == 0) //上传成功
var tr = demoListView.find('tr#upload-'+ index)
,tds = tr.children();
tds.eq(2).html('<span style="color: #5FB878;">上传成功</span>');
tds.eq(3).html(''); //清空操作
return delete this.files[index]; //删除文件队列已经上传成功的文件
} //code为后台传回来的数据,具体多少自己定,
//后台只能传回json格式数据,不然会走error函数;
,error: function(index, upload){
}
})
});
以上即是前端功能的实现,后端方面,在Service层Impl下创建文件上传的函数:
public String uploadNoticeFile(MultipartFile fileList) {
try{
String pathname = filepath;
String timeMillis = Long.toString(System.currentTimeMillis());//时间戳
String filename = timeMillis + fileList.getOriginalFilename();
File dir = new File(pathname);
if (!dir.exists()) {
dir.mkdirs();
}
String filepath = pathname + filename;
File serverFile = new File(filepath);
fileList.transferTo(serverFile);
//存入数据库
NoticeFile noticeFile = new NoticeFile();
noticeFile.setNoFileName(filename);
noticeFile.setNoFilePath(filepath);
noticeFile.setNoId(0L);
noticeFileRepository.save(noticeFile);
return "1";
}catch (Exception e) {
e.printStackTrace();
return "0";
}
}
NoticeFile是我个人在写项目时创建的类,读者可根据实际情况自行运用。
然后,在controller层中创建相应的函数:
@RequestMapping(value = "/upload", method = RequestMethod.POST)
@ResponseBody
public Map<String, Object> noticeFile(@RequestParam(name = "file") MultipartFile files) {
String msg = noticeFileService.uploadNoticeFile(files);
Map map = new HashMap();
if (msg == "1") {
map.put("code", "0");
} else {
map.put("code", "1");
}
return map;
}
以上,即实现了多文件上传的全部功能。
以上是 java Springboot实现多文件上传功能 的全部内容, 来源链接: utcz.com/z/328891.html