layui单文件上传

    function imguload(cls) {
        var taskId = $("#model-taskId").val();
        var processInstanceId = $("#model-pid").val();
        var processDefinitionId = $("#model-pdid").val();
        upload.render({
            elem: cls,
            url: '/flow/userTaskFile/upload.cc'
            , xhr: xhrOnProgress
            , data: {
                "taskId": taskId,
                "processInstanceId": processInstanceId,
                "processDefinitionId": processDefinitionId
            }
            , auto: true
            , progress: function (index, percent) {//上传进度回调 value进度值

            }
            , before: function (input) {
                index = layer.msg('处理中', {icon: 16, shade: 0.1, time: 0});
            }
            , accept: 'file'
            , done: function (res) {
                layer.close(index);
                if (res.code == 0) {
                    layer.alert("上传成功", {
                        icon: 1, title: '提示'
                    });
                }
                else {
                    layer.alert("上传失败", {
                        icon: 2, title: '提示'
                    });
                }
            },
            error: function () {
                layer.alert("上传错误", {
                    icon: 2, title: '提示'
                });

            }
        });
    }