course-server/modules/Custom.Course.Backend/resources/views/course/poster.blade.php

<div class="ibox float-e-margins">
    <div class="ibox-content" style="display: block;">

        {!! Form::open(['route' => 'admin.course.poster.store'
        , 'class' => 'form-horizontal'
        , 'role' => 'form'
        , 'method' => 'POST'
         ,'id'=>'Category_form']) !!}

        <div class="form-group">
            {!! Form::label('name','海报背景图：', ['class' => 'col-md-2 control-label']) !!}
            <div class="col-md-2" id="filePicker">选择图片</div>
            <div class="col-md-6">
                <input type="hidden" name="cover" value="{{$poster}}"/>
                <img class="banner-image" src="{{env('APP_URL').'/storage/'.$poster}}"
                     style="max-width: 320px;max-height: 320px;">
            </div>
        </div>

        <div class="hr-line-dashed"></div>
        <div class="form-group">
            <div class="col-md-offset-2 col-md-8 controls">
                <button type="submit" class="btn btn-primary">保存</button>
            </div>
        </div>

    {!! Form::close() !!}
    <!-- /.tab-content -->
    </div>
</div>

{!! Html::script(env("APP_URL").'/vendor/libs/webuploader-0.1.5/webuploader.js') !!}
<script>
    $(function () {
        var uploader = WebUploader.create({
            // 选完文件后，是否自动上传。
            auto: true,
            swf: '{{url(env("APP_URL").'/assets/backend/libs/webuploader-0.1.5/Uploader.swf')}}',
            server: '{{route('ibrand.file.upload',['_token'=>csrf_token()])}}',
            pick: '#filePicker',
            fileVal: 'upload_file',
            accept: {
                title: 'Images',
                extensions: 'gif,jpg,jpeg,bmp,png',
                mimeTypes: 'image/*'
            }
        });
        // 文件上传成功，给item添加成功class, 用样式标记上传成功。
        uploader.on('uploadSuccess', function (file, response) {
            $('.banner-image').attr('src', response.data.url).show();
            $("input[name='banner_pic']").val(response.data.file);
            $("input[name='cover']").val(response.data.path);

        });
    })
</script>
<script>
    $('#Category_form').ajaxForm({
        success: function (result) {
            if (!result.status) {
                swal("保存失败!", result.message, "error")
            } else {
                swal({
                    title: "保存成功！",
                    text: "",
                    type: "success"
                }, function () {
                    location = '{{route('admin.course.poster')}}';
                });
            }

        }
    });

</script>