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'
                 });

             }
         });
     }