通过本案例，我们实现blobImage上传的图片在grid表格中的显示。
grid的cellRender方法渲染单元格显示图片，例：

Model.prototype.personGridCellRender = function(event){
		if(event.colName == "sPhoto"){
	           var url = biz.Request.setBizParams(require.toUrl("$UI/system/components/justep/blob/server/download.j")
	        		   + "?process=/demo/components/process/org/orgProcess"              //流程名称
	        		   + "&activity=mainActivity"                                    //环节名称
	        		   + "&action=blobDownloadAction"                                //调用的Action
	        		   + "&blobDataModel=/system/data"                                  //数据模块目录
	        		   + "&blobConcept=SA_OPPerson"                                          //概念名
	        		   + "&blobRelation=sPhoto"                                           //关系名
	        		   + "&blobConceptValue=" + event.rowID                                        //行ID
	        		   + "&$query-version=" + justep.UUID.createUUID(),this.getContext().getBSessionID());
	         event.html = "<img src="+url+" xid='image1' style='height:70px;width:70px;'></img>"
		}
	};

效果图：blobImage2