上传文件，超过大小限制后，返回了错误消息（record），但是页面接收不到错误消息。
报错信息：jquery-1.9.1.min.js:5 POST http://localhost:8888/bxacorp/upload/corp_onoff net::ERR_CONNECTION_RESET

后台代码

@AdaptBy(type = UploadAdaptor.class, args = { "ioc:myUpload" })
	@At("/?/?")
	@Filters
	public Object upload(String fPath ,String cPath, @Param("file") TempFile[] tfs, HttpServletRequest req,
			AdaptorErrorContext err) {
		Record record = new Record();
		if (err != null && err.getAdaptorErr() != null) {
			record.set("name", "文件大小（<3M）或者文件格式不正确（doc|docx|txt|xls|xlsx|jpg|png|gif|jpeg|bmp）");
			record.set("status", false);
		} else {
			//list = new ArrayList<Record>();
			for (TempFile tf : tfs) {
				 record = Util.getFileJson(fPath,cPath, tf);
			}
		}
		return record;
	}

前端代码

upload.render({
	    elem: '#fg_file'
	    ,url: '${base}/upload/corp_onoff'
	    ,multiple: true
	    ,accept:'file'
	    ,before: function(obj){ 
	    	    layer.load(2); //上传loading
	    }
	    ,done: function(res){
              //接收文件
	    	alert(res.name)
	    	layer.closeAll('loading'); //关闭loading
	    	if(res.status){
	    		$('#fg_demo2').append('<a class="imgs" style="color:bule" id="img'+res.id+'"  href="${base}/down/download?path='+ res.path +'&name='+res.name+'" alt="'+ res.name +'" class="layui-upload-img" style="font-size: 20px;">'+res.name+'</a>');
	    	    $('#fg_demo2').append('<i title="删除" class="layui-icon" id="del'+res.id+'" onclick="delIMG(\''+res.id+'\',this,\'img'+res.id+'\')"   style="cursor:pointer;margin-right:5px;color:#FF5722;font-size: 25px;">&#x1007;</i><br/>'); 
	    		$('#fg_hidimg').append('<input id="'+res.id+'" type="hidden"  name ="hidimg" value=\''+JSON.stringify(res)+'\'></input>');
	    	}else{
	    		layer.msg(res.name,{icon:5});
	    	}
	    	
	    }
	    ,error: function(index, upload){
	    	
	        layer.closeAll('loading'); //关闭loading
	      }
	  });