文件上传控件bootstrap-fileinput与Python交互

<script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://cdn.bootcss.com/twitter-bootstrap/4.1.0/css/bootstrap.min.css">
<script src="https://cdn.bootcss.com/popper.js/1.12.5/umd/popper.js"></script>
<script src="https://cdn.bootcss.com/twitter-bootstrap/4.1.0/js/bootstrap.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-fileinput/5.1.2/css/fileinput.min.css" rel="stylesheet"
type="text/css"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-fileinput/5.1.2/js/fileinput.min.js"
type="text/javascript"></script>

<input type="file" name="img" id="img" value="" multiple="multiple" data-show-preview="true"/>

 $("#img").fileinput({
        language: 'en',//设置语言
        uploadUrl: "https://ky8.top/upload_images",//图片上传的url，我这里对应的是后台struts配置好的的action方法
        showCaption: true,//显示标题
        showRemove: true, //显示移除按钮
        uploadAsync: true,//默认异步上传
        showPreview: true,//是否显示预览
        textEncoding: "UTF-8",//文本编码
        browseLabel: "Select Image",
        autoReplaceBoolean: false,//选择图片时不清空原图片
    });


    $("#img").on('fileuploaded', function (event, data, previewId, index) {//异步上传成功结果处理
        {#var img = JSON.parse(data.response);//接收后台传过来的json数据#}
        var code = data['response']['code'];
        if (code === 0) {
            document.getElementById('osimg').src = data['response']['result'];
            document.getElementById('oshref').href = data['response']['result'];
            document.getElementById('mk').innerText = '!['+ data['response']['name'] +'](' + data['response']['result'] + ')';
        }
    });


    $("#img").on('fileerror', function (event, data, msg) {//异步上传失败结果处理
        alert("uploadError");
    });