flex上传图片到java服务器

今天弄flex上传图片到java，现在弄成功，中间也经常一点小波折，现记录一下。重点在java侧的实现。

flex侧：文件上载到在url参数中传递的URL。该URL必须是配置为接受上载的服务器脚本。Flash Player使用HTTP POST方法上载文件。处理上载的服务器脚本应收到包含下列元素的POST请求：

Content-Type，属于multipart/form-data

Content-Disposition,其name属性默认情况下设置为“Filedata”，filename属性设置为原始文件的名称

文件的二进制内容

java侧，用spring MVC实现，接收到图片，先存储到本地，然后上传到ftp，上代码：

?

 
 

@Controller?
  
  
public?class?FlashController?extends?BaseController{?
  
  
?????
  
  
????//?限制文件的上传大小???
  
  
????private?int?maxPostSize?=?100?*?1024?*?1024;?
  
  
????public?static?String?imagePath?=?null;?
  
  
????public?static?String?imageCdnPath?=?null;?
  
  
?????
  
  
????@SuppressWarnings("unchecked")?
  
  
????@RequestMapping("/uploadImage")?
  
  
????@ResponseBody?
  
  
????public?String?uploadImage(HttpServletRequest?request,?HttpServletResponse?response)?{?
  
  
????????try?{?
  
  
????????????if(imagePath?==?null)?{??????????????????
  
  
????????????????imagePath?=?Config.getConfig("message.image.path");?
  
  
????????????}?
  
  
????????????if(imageCdnPath?==?null)?{?
  
  
????????????????imageCdnPath?=?Config.getConfig("message.image.cdn.dir");?
  
  
????????????}?
  
  
????????}?catch?(IOException?e)?{?
  
  
????????????//?TODO?Auto-generated?catch?block?
  
  
????????????LoggerUtil.error("读取聊天图片的存储地址出错",e);?
  
  
????????}????
  
  
????????String?productId?=?request.getParameter("productId");?
  
  
????????if(StringUtils.isBlank(productId))?{?
  
  
????????????productId?=?"default";?
  
  
????????}?
  
  
????????LoggerUtil.debug("收到flash存储聊天图片的请求，productId:"?+?productId);?
  
  
????????LoggerUtil.outInInfo("收到flash存储聊天图片的请求，productId:"?+?productId);?
  
  
?????????
  
  
????????//?We?use?the?FileUpload?package?provided?by?Apache?to?process?the?request.?
  
  
????????DiskFileItemFactory?factory?=?new?DiskFileItemFactory();???
  
  
????????factory.setSizeThreshold(4096);???
  
  
????????ServletFileUpload?upload?=?new?ServletFileUpload(factory);???
  
  
????????upload.setSizeMax(maxPostSize);??
  
  
????????String?fileName?=?null;?
  
  
????????try?{???
  
  
????????????request.setCharacterEncoding("UTF-8");???
  
  
????????????List?fileItems?=?upload.parseRequest(request);???
  
  
????????????Iterator?iter?=?fileItems.iterator();???
  
  
????????????while?(iter.hasNext())?{???
  
  
????????????????FileItem?item?=?(FileItem)?iter.next();???
  
  
????????????????if?(!item.isFormField())?{???
  
  
????????????????????fileName?=?item.getName();???
  
  
????????????????????//转换文件名??
  
  
????????????????????String?fileType?=?fileName.substring(fileName.lastIndexOf("."));?
  
  
????????????????????fileName?=?ImageUtils.getCreateImageFileName("","",fileType);?
  
  
????????????????????item.write(new?File(imagePath?+?fileName));????
  
  
????????????????}???
  
  
????????????}???
  
  
????????}?catch?(FileUploadException?e)?{???
  
  
????????????LoggerUtil.error("[在线客服]用户上传图片失败",?e);?
  
  
????????}?catch?(UnsupportedEncodingException?e)?{?
  
  
????????????//?TODO?Auto-generated?catch?block?
  
  
??????????????LoggerUtil.error("[在线客服]用户上传图片失败",?e);?
  
  
????????}?catch?(IOException?e)?{?
  
  
????????????//?TODO?Auto-generated?catch?block?
  
  
??????????????LoggerUtil.error("[在线客服]用户上传图片失败",?e);?
  
  
????????}?catch?(Exception?e)?{?
  
  
????????????//?TODO?Auto-generated?catch?block?
  
  
??????????????LoggerUtil.error("[在线客服]用户上传图片失败",?e);?
  
  
????????}???
  
  
?
  
  
????????//把图片上传到CDN?
  
  
????????FTPUtils?ftpUtils?=?new?FTPUtils("config");?
  
  
????????try?{?
  
  
????????????boolean?result?=?ftpUtils.connect();?
  
  
????????????if(!result)?{?
  
  
????????????????LoggerUtil.alarmInfo("连接FTP服务器失败");?
  
  
????????????????return?"error";?
  
  
????????????}?
  
  
????????}?catch?(IOException?e1)?{?
  
  
????????????//?TODO?Auto-generated?catch?block?
  
  
????????????LoggerUtil.error("连接FTP服务器失败",?e1);?
  
  
????????????return?"error";?
  
  
????????}?
  
  
?????????
  
  
????????String?ftpName?=?imageCdnPath?+?productId?+?"/"?+?DateUtil.formatDate(new?Date(),"yyyyMM")?+?"/"?+?fileName;?
  
  
????????String?srcImagePath?=?imagePath+fileName;?
  
  
????????int?uploadResult?=?Im4JavaUtils.uploadJPGImageByIm4Java(ftpUtils,?srcImagePath,?ftpName,?ImageUtils.IMAGE_SIZE_TYPE_ORIG);?
  
  
????????LoggerUtil.debug("上传结果："?+?uploadResult);?
  
  
????????if(uploadResult?!=?FTPUtils.UPLOADSTATUS_UPLOAD_FILE_SUCESS)?{?
  
  
????????????return?"error";?
  
  
????????}?
  
  
????????String?result?=?ftpUtils.getFtpHttpUrl()+?productId?+?"/"?+?DateUtil.formatDate(new?Date(),"yyyyMM")?+?"/"?+?fileName;?
  
  
????????LoggerUtil.debug(result);?
  
  
????????return?result;?
  
  
????}?
  
  
}?
 
 

附上两个很好的参考网址：

http://www.adobe.com/devnet/flex/articles/file_upload.html

http://blog.csdn.net/duanjingyu/article/details/5539690