java 图上传

public static Upload getupload(HttpServletRequest  request,String file_path) throws IOException{

Upload upload = new Upload();
//创建一个通用的多部分解析器
CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());
//判断 request 是否有文件上传,即多部分请求
if(multipartResolver.isMultipart(request))
{
//转换成多部分request  
MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest)request;
//取得request中的所有文件名
Iterator<String> iter = multiRequest.getFileNames();
int i=0;
while(iter.hasNext())
{
++i;
//记录上传过程起始时的时间，用来计算上传时间
//int pre = (int) System.currentTimeMillis();
//取得上传文件
MultipartFile file = multiRequest.getFile(iter.next());
if(file != null)
{
//取得当前上传文件的文件名称
String myFileName = file.getOriginalFilename();
//如果名称不为“”,说明该文件存在，否则说明该文件不存在
if(myFileName.trim() !="")
{

//处理上传文件名  abc.jpg 处理->.jpg

String name = myFileName.substring(myFileName.lastIndexOf("."), myFileName.length());
//重命名上传后的文件名
String fileName = UUID.randomUUID()+name; //吧文件名中的中文替换掉
//定义上传路径
String path=file_path+fileName;
File localFile = new File(path);
file.transferTo(localFile);



/*图片压缩 start*/
ImgCompress imgCompress2 = new ImgCompress(path);
imgCompress2.resizeFix(400, 400,file_path,fileName);
if (i==1) {
upload.setA(fileName);
}else if (i==2) {
upload.setB(fileName);
}else if (i==3) {
upload.setC(fileName);
}

}
}

}


}

return upload;
}