bootstrap fileinput +springmvc图片上传-krajee

引入的文件

<link href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-fileinput/4.4.9/css/fileinput.min.css" media="all" rel="stylesheet" type="text/css" />

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css">
<link href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-fileinput/4.4.9/css/fileinput.min.css" media="all" rel="stylesheet" type="text/css" />
<!-- if using rtl (right-to-left) orientation, load the rtl css file after fileinput.css by uncommenting below -->
<link href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-fileinput/4.4.9/css/fileinput-rtl.min.css" media="all" rel="stylesheet" type="text/css"/>
<!-- optionally uncomment line below if using a theme or icon set like font awesome (note that default icons used are glyphicons and `fa` theme can override it) -->
<link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" media="all" rel="stylesheet" type="text/css" />
<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<!-- piexif.min.js is needed for auto orienting image files or when restoring exif data in resized images and when you
    wish to resize images before upload. this must be loaded before fileinput.min.js -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-fileinput/4.4.9/js/plugins/piexif.min.js" type="text/javascript"></script>
<!-- sortable.min.js is only needed if you wish to sort / rearrange files in initial preview.
    this must be loaded before fileinput.min.js -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-fileinput/4.4.9/js/plugins/sortable.min.js" type="text/javascript"></script>
<!-- purify.min.js is only needed if you wish to purify html content in your preview for
    html files. this must be loaded before fileinput.min.js -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-fileinput/4.4.9/js/plugins/purify.min.js" type="text/javascript"></script>
<!-- popper.min.js below is needed if you use bootstrap 4.x. you can also use the bootstrap js
   3.3.x versions without popper.min.js. -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js"></script>
<!-- bootstrap.min.js below is needed if you wish to zoom and preview file content in a detail modal
    dialog. bootstrap 4.x is supported. you can also use the bootstrap js 3.3.x versions. -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js" type="text/javascript"></script>


<!-- the main fileinput plugin file -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-fileinput/4.4.9/js/fileinput.min.js"></script>
<!-- optionally uncomment line below for loading your theme assets for a theme like font awesome (`fa`) -->
<!-- script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-fileinput/4.4.9/themes/fa/theme.min.js"></script -->
<!-- optionally if you need translation for your language then include  locale file as mentioned below -->
<script type="text/javascript" src="../../static/bootstrap/js/zh.js"></script>  <!--这个可以去bootstrap cdn找-->

 

 

 

首先创建一个div

<div class="file-loading">
    <input id="input-file-1" name="filename" multiple type="file" accept="image/*" >
</div>

javascript代码

<script>
    $("#input-file-1").fileinput({
        language: "zh",
        uploadurl: "/goods/add",
        autoorientimage: true,
         multiple:true,
        maxfilecount:4,
        uploadasync:false,
        uploadextradata:{id:'kv-1',goodsname:"123"}, //额外添加的数据，后台有request.getpara取得
        allowedfileextensions: ["jpg", "jpeg", "gif", "png","bmp"],//单位为kb，如果为0表示不限制文件大小
        layouttemplates:{
            // actiondelete: '',//设置为空字符串可以去掉对应的按钮
            actionupload:'',
        },
        browseclass: 'btn btn-primary'
    }).on('fileuploaded', function(event, data) {
        //上传成功
       alert("成功");
    })
        .on("fileuploaderror",function (event,data,msg) {
            //上传失败
            alert("失败");
        })

    /*    .on("filepreremove", function(jqxhr) {
        var abort = false;
        if (confirm("确定删除此图片?")) {
            abort = true;
        }
        return abort; // 您还可以发送任何数据/对象，你可以接收` filecustomerror
    });*/

</script>

后台代码

 @responsebody
    @requestmapping(value="/add",method = requestmethod.post)
    public string insertgoods(@requestparam("filename") multipartfile imagefile[], //同步上床 获取多张图片参数
                              /*goods goods,*/
                              httpservletrequest request){
        system.out.println("hello world");

        goods goods = new goods();
        if(imagefile!=null){
            string imgurl="";
            for(int k=0;k<imagefile.length;k++) {
                 imgurl += saveimagefile(imagefile[k], request)+",";
            }

            goods.setimgurl(imgurl);
        }
        date date=new date();
        goods.setuploadtime(date);
        goodsenum anenum=goodsservice.insertgoods(goods);
        if(anenum.equals(goodsenum.insert_goods_success)){
            return jsonutil.tojson("success");
        }else{
            return jsonutil.tojson("error");
        }
    }

private string saveimagefile(multipartfile imagefile, httpservletrequest request) {
        //获取文件上传到服务器的路径
        string uploadurl=getrealpath(request)+"static/uploadimg/";
        system.out.println("文件路径为："+uploadurl);
        //获取从客户端传过来的文件名
        string filename=imagefile.getoriginalfilename();
        //判断文件上传的路径是否存在，若不存在，则需要创建它
        file dir=new file(uploadurl);
        if(!dir.exists()){
            dir.mkdirs();
        }
        //targetfile最终上传的文件，先判断文件是否存在
        file targetfile=new file(uploadurl+filename);
        if(!targetfile.exists()){
            //如果文件不存在，我们尝试创建它
            try {
                targetfile.createnewfile();
            }catch (ioexception e){
                e.printstacktrace();
            }
        }
        //使用multipartfile的transferto方法保存文件

        try {
            imagefile.transferto(targetfile);
        }catch (illegalstateexception e){
            e.printstacktrace();
        }catch (ioexception e){
            e.printstacktrace();
        }
        return "img/"+filename;
    }