Ext 图片上传

Eex代码 

Ext.onReady(function() {

Ext.MultiUploadWindow = Ext.extend(Ext.Window, {
xtype : "window",
title : "图片上传",
id : "ext-win-swfupload",
width : 650,
height : 300,
modal : true,
closable : true,
resizable : false,
initComponent : function() {
gid = this.gid;
this.items = [{
xtype : "form",
id : "ext-form-upload",
labelAlign : "right",
layout : "column",
fileUpload : true,
height : 235,
frame : true,
items : [{  
                 xtype:'uploadPanel',  
                 border : false,  
                 fileSize : 1024*50,//限制文件大小  
                 uploadUrl : '../../../back/scGoodsDetailController.do?multiupload&gid='+gid,  
                 flashUrl : '../../../js/upload/swfupload.swf',  
                 filePostName : 'myUpload', //后台接收参数  
                 fileTypes : '*.jpg;*.png;*.bmp',//可上传文件类型  
                 file_types_description: "Web Image Files",
                 postParams : {savePath:'upload\\'} //上传文件存放目录  
             } 
   ]}
];
this.buttons = [{
text : '关闭',
iconCls : 'cancel',
handler : function() {
Ext.getCmp('ext-win-swfupload').destroy();
store3.load({params:{start:0,limit:100,gid:gid}});
}
} ];
Ext.MultiUploadWindow.superclass.initComponent.call(this);
this.show();


}
});

});

java代码

@RequestMapping(params = "multiupload")
@ResponseBody
public AjaxJson multiupload(String gid, HttpServletRequest request, HttpServletResponse response) throws Exception{
  //String msg = "";
  AjaxJson j = new AjaxJson();
  try{
  ScGoodsDetail scGoodsDetail = new ScGoodsDetail();
  MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
  MultipartFile file = multipartRequest.getFile("myUpload");
  if (file.getSize() > 0) {
  String filename = file.getOriginalFilename();
String path = SystemPath.getSysPath().replace("%20", " ") + "upload/goods/picture/";
String nm = java.util.UUID.randomUUID().toString();
String hz = FileUtils.getFileExtension(filename).toLowerCase();
if(!hz.equals("jpg")&&!hz.equals("png")&&!hz.equals("bmp")){
j.setMsg("只能上传jpg、png、bmp类型的图片");
j.setSuccess(false);
return j;
}
String localfilename = nm + "." + hz;
//String localfilename2 = nm + "2." + hz;
// 写入文件
File source = new File(path + localfilename);
file.transferTo(source);
//BufferedImage bufImage = ImageIO.read(new File(path + localfilename));
//int dwInW = bufImage.getWidth();
//int dwInH = bufImage.getHeight();
//slt(path + localfilename2, path + localfilename, hz, 750,519);
//source.delete();
scGoodsDetail.setPath(localfilename);
/*Thumbnails.of(path + localfilename)
.forceSize(500,200)
.toFile(path +"/small/"+ localfilename);*/
scGoodsDetail.setGid(gid);
j.setMsg(scGoodsDetailService.insert(scGoodsDetail));
  }else{
  j.setMsg("请选择图片！");
  j.setSuccess(false);
return j;
  }
  }catch(Exception e){
  j.setMsg(e.toString());
  }
  return j;
}