参考原 upload.html 文件

<link rel="stylesheet" href="{pboot:sitetplpath}/bootstrap/css/bootstrap.min.css" >
<script src="{pboot:sitetplpath}/bootstrap/js/bootstrap.min.js"></script>
<link href="{pboot:sitetplpath}/fileinput/css/fileinput.css" media="all" rel="stylesheet" type="text/css"/>
<link href="{pboot:sitetplpath}/fileinput/themes/explorer-fa/theme.css" media="all" rel="stylesheet" type="text/css"/>
<script src="{pboot:sitetplpath}/fileinput/js/plugins/sortable.js" type="text/javascript"></script>
<script src="{pboot:sitetplpath}/fileinput/js/fileinput.js" type="text/javascript"></script>
<script src="{pboot:sitetplpath}/fileinput/js/locales/fr.js" type="text/javascript"></script>
<script src="{pboot:sitetplpath}/fileinput/js/locales/es.js" type="text/javascript"></script>
<script src="{pboot:sitetplpath}/fileinput/themes/explorer-fa/theme.js" type="text/javascript"></script>
<script src="{pboot:sitetplpath}/fileinput/themes/fa/theme.js" type="text/javascript"></script>
<script src="{pboot:sitetplpath}/fileinput/js/locales/zh.js" type="text/javascript"></script>

上传：<span id="fileName"></span><input class="btn btn-success file" type="button" value="上传文件">


<div class="modal fade" id="fileBox" tabindex="-1" role="dialog" aria-labelledby="fileBoxLabel" aria-hidden="true">
    <div class="modal-dialog modal-lg" role="document">
            <div class="modal-content">
                <div class="modal-header">
                    <h4 class="modal-title" id="fileBoxLabel">文件上传</h4>
                </div>
                <div class="modal-body">
                    <div class="file-loading">
                        <input id="fileInput" name="upload" type="file" data-msg-placeholder="请选择要上传的文件">
                </div>
                <div id="kartik-file-errors"></div>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-primary uploadSubmit">上传</button>
                    <button type="button" class="btn btn-secondary" data-dismiss="modal">关闭</button>
                </div>
        </div>
    </div>
</div>

$(document).on('ready', function() {
    var target;

    $(".file").on("click", function() {
        target = $(this).data("target");
        upload('fileInput', false, false, true, 1);
        $("#fileBox").modal("show");
    });

    function upload(inputName, showPreview, dropZoneEnabled, autoReplace, maxFileCount) {
        $("#" + inputName).fileinput({
            language: 'zh',
            showUpload: false,
            showPreview: showPreview,
            dropZoneEnabled: dropZoneEnabled,
            autoReplace: autoReplace,
            elErrorContainer: '#kartik-file-errors',
            uploadAsync: false,
            maxFileCount: maxFileCount,
            uploadUrl: '{pboot:upload}' //文件上传接口
        }).on("filebatchuploadsuccess", function(event, data, previewId, index) {
            if (data.response.code) {
                $('#fileName').html(data.response.data.src)

                $("#" + inputName).fileinput('reset');
                $("#uploadBox").modal("hide");
                $("#fileBox").modal("hide");
                $("#uploadBoxs").modal("hide");
            } else {
                alert(data.response.data);
            }
        });

        $(".uploadSubmit").on("click", function() {
            $("#" + inputName).fileinput("upload");
        });
    }
});

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