什么是spring boot
spring boot是由pivotal团队提供的全新框架,其设计目的是用来简化新spring应用的初始搭建以及开发过程。该框架使用了特定的方式来进行配置,从而使开发人员不再需要定义样板化的配置。用我的话来理解,就是spring boot其实不是什么新的框架,它默认配置了很多框架的使用方式,就像maven整合了所有的jar包,spring boot整合了所有的框架(不知道这样比喻是否合适)。
页面代码(只需要引入基础layui的css与js)
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<fieldset class = "layui-elem-field layui-field-title" style= "margin-top: 30px;" >
<legend>多文件列表上传</legend>
</fieldset>
<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>
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js
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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/uploadfile'
,accept: 'file'
,multiple: true
,auto: false
,size: 5120
,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
}
this .error(index, upload);
}
,error: function(index, upload){
var tr = demolistview.find( 'tr#upload-' + index)
,tds = tr.children();
tds.eq( 2 ).html( '<span style="color: #ff5722;">上传失败</span>' );
tds.eq( 3 ).find( '.demo-reload' ).removeclass( 'layui-hide' ); //显示重传
}
});
});
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后台接收
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public final static string upload_file_path = "d:\\uploadfile\\" ;
@requestmapping (value = "uploadfile" )
public string uploadimage( @requestparam ( "file" ) multipartfile file) {
if (!file.isempty()) {
map<string, string> resobj = new hashmap<>(map_size);
try {
bufferedoutputstream out = new bufferedoutputstream(
new fileoutputstream( new file(upload_file_path, file.getoriginalfilename())));
out.write(file.getbytes());
out.flush();
out.close();
} catch (ioexception e) {
resobj.put( "msg" , "error" );
resobj.put( "code" , "1" );
return jsonobject.tojsonstring(resobj);
}
resobj.put( "msg" , "ok" );
resobj.put( "code" , "0" );
return jsonobject.tojsonstring(resobj);
} else {
return null ;
}
}
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总结
以上所述是小编给大家介绍的springboot+layui实现文件上传功能,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持!
原文链接:https://blog.csdn.net/butterBallj/article/details/80647741