thinkphp5.1+layui图片上传（前端部分.第二种）

Posted 2021-05-14 遇见Time

前台展示(未开启自动上传，要手动上传)


前端(亲测可用)

 <div class="layui-form-item">
        <fieldset class="layui-elem-field layui-field-title" style="margin-top: 30px;">
            <legend>消毒照片上传</legend>
        </fieldset>
        <div class="layui-row">
            <div class="layui-col-xs7">
                <div class="layui-row">
                    <div class="layui-col-xs12">
                        <label class="layui-form-label" style="width:70px;" >图片名称</label>
                        <div class="layui-input-inline"><input type="text" id="picname" name="picname"  autocomplete="off" class="layui-input" ></div>
                    </div>
                    <div class="layui-col-xs12">
                        <div class="grid-demo grid-demo-bg1">
                            <div class="layui-input-inline" style="margin-left:100px;margin-top:15px;">
                                <img id="preview" width="220px" height="150px">
                                <p id="demoText"></p>
                                <div style="width:220px;margin-top:10px;">
                                    <div class="layui-progress layui-progress-big" lay-showpercent="yes" lay-filter="demo">
                                        <div class="layui-progress-bar" lay-percent="" ></div>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
            <div class="layui-col-xs5">
                <button type="button" class="layui-btn layui-btn-normal" id="test8">选择文件</button>
                <button type="button" class="layui-btn" id="sc">开始上传</button>
            </div>
        </div>
        <div class="layui-row">
            <div class="layui-col-xs12">
                <div style="margin-left:30px;margin-top:7px;">
                    温馨提示:  一次上传一张图，且大小不超过2MB。
                </div>
            </div>
        </div>
    </div>

<script>
    layui.use(['upload'], function () {
        var upload = layui.upload;
        var $ = layui.jquery;
        var element = layui.element;
        //选完文件后不自动上传
        upload.render({
            elem: '#test8'
            ,url: "......" //改成您自己的上传接口
            , size: 2048        // 最大允许上传的文件大小  单位 KB
            ,before:function (obj) {
                obj.preview(function(index,file,result) {
                    $('#preview').attr('src',result); //图片链接 base64
                });
                element.progress('demo', '0%'); //进度条复位
                layer.msg('上传中', {icon: 16, time: 0});
            }
            ,auto: false   
            ,bindAction: '#sc'
            ,done: function(res){
                //如果上传失败
                if(......){  //对后端返回的状态值进行判断
                    console.log(res)
                    var picname=res.filename;
                    console.log(picname)
                    $("#picname").val(picname);
                    return layer.msg('上传成功');
                }else{
                    return layer.msg('上传失败');
                }
                $('#demoText').html(''); //置空上传失败的状态
            }
            ,error: function(){
                //演示失败状态，并实现重传
                var demoText = $('#demoText');
                demoText.html('<span style="color: #FF5722;">上传失败</span> <a class="layui-btn layui-btn-xs demo-reload">重试</a>');
                demoText.find('.demo-reload').on('click', function(){
                    uploadInst.upload();
                });
            }
            //进度条
            ,progress: function(n, index, e){
                element.progress('demo', n + '%'); //可配合 layui 进度条元素使用
                if(n == 100){
                    layer.msg('上传完毕', {icon: 1});
                }
            }
        });
    })
</script>

(后端部分参照Thinkphp5.1系列另一篇)