smarGwt / Grails 上传实例

最新推荐文章于 2024-11-11 13:22:45 发布

iteye_20617

最新推荐文章于 2024-11-11 13:22:45 发布

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本文介绍了一个包含前端和后端实现的图片上传功能。前端使用SmargWT框架创建表单并预览图片，后端采用Grails和Groovy处理文件上传及存储。通过具体代码展示了如何设置表单字段、图片预览以及文件保存过程。

前台代码 (smargwt)：

<pre name="code" class="datasourcedatefielduploadingpic 方法">public datasourcetextfield datasourcedatefielduploadingpic(string timeid,string timename){ //sc.showconsole(); //"file" new datasourcevalidatefile(); textuploadfile=new datasourcetextfield(timeid,"<nobr>"+timename+"</nobr>"); formitem=new canvasitem(timeid,"<nobr>"+timename+"</nobr>"); formitem.setwidth("200"); final dynamicform picform=new dynamicform(); picform.setencoding(encoding.multipart); canvasitem pictureshowitem=new canvasitem("pictureshowitem","照片"); pictureshowitem.setrowspan(3); final image image=new image(); image.seturl(gwt.gethostpagebaseurl()+"icons/fwsp.png"); canvas c=new canvas(); c.addchild((image)); pictureshowitem.setcanvas(c); uploaditem pictureitem =new uploaditem("file","<nobr>"+timename+"</nobr>"); submititem submitpic=new submititem("submitpic","上传照片"); picform.setitems(pictureshowitem,pictureitem,submitpic); picform.setaction(gwt.gethostpagebaseurl()+"personalinfo/upload"); final window tipwin=new window(); tipwin.settitle("上传提示窗口"); htmlpane htmlpane=new htmlpane(); htmlpane.setcontents("<iframe name=\"uploadframe2018\" class=gwt-frame style=\"width:100%; height:100%\" src=\""+gwt.gethostpagebaseurl()+"uploading.gsp\"></iframe>"); htmlpane.setsize("100%", "100%"); htmlpane.moveto(0, 20); tipwin.addchild(htmlpane); tipwin.addcloseclickhandler(new closeclickhandler() { public void oncloseclick(closeclientevent event) { mainservice.getpicname(new asynccallback() { public void onfailure(throwable caught) { } @override public void onsuccess(object result) { strvalue=result.tostring(); image.seturl(gwt.gethostpagebaseurl()+"picture/"+result.tostring()+"?"+random.nextdouble()); tipwin.clear(); } }); } }); picform.settarget("uploadframe2018"); submitpic.addclickhandler(new clickhandler() { @override public void onclick(clickevent event) { tipwin.setsize("300","300"); tipwin.setautocenter(true); tipwin.show(); tipwin.bringtofront(); picform.submitform(); } }) ; picform.setisgroup(true); picform.setgrouptitle("上传照片"); formitem.setcanvas(picform); return textuploadfile; }</pre>

	public dynamicform createform(){		datasource datasource=new datasource();		datasource.setclientonly(true);				datasourcevalidatefile file=new datasourcevalidatefile();		datasource.setfields(file.datasourcedatefielduploadingpic("attachment1","上传访谈文件"));				final dynamicform form=new dynamicform();		form.setusealldatasourcefields(true);		form.setdatasource(datasource);		form.setfields(file.formitem);		return form;	}

visitrecorddto visit=new visitrecorddto();				visit.setattachment1(form.getvalueasstring("attachment1"));

<span style="font-family: simsun; font-size: medium;"><pre name="code" class="前端所用到的 getpicname方法"> public string getpicname(){</pre></span>
<pre name="code" class="前端所用到的 getpicname方法"> return session["stupic"]; }</pre> 后台代码 (grails+groovy)：

def upload={		params.each{			println it		}				commonsmultipartfile uploadfile=params.file			if(!uploadfile.isempty()){		string ofilename=uploadfile.getoriginalfilename()		date fname=new date()		long fff=fname.gettime()		def filesavename=fff+ofilename.substring(ofilename.lastindexof("."))		def filesavepath=request.getrealpath("/")+"uploads\\"+ filesavename		println filesavepath		uploadfile.transferto(new file(filesavepath) )		session.setattribute("stupic",filesavename)		render "上传成功,请关闭提示窗口！"		}else{		}	}

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