java上传文件

public Boolean uploadFiles(File files, String filenames, String newfilenames,String url) throws IOException { String root = ""; boolean t = true; root = ServletActionContext.getServletContext().getRealPath("/systemfile/picture"); try{ FileOutputStream fos = new FileOutputStream(root+"/"+newfilenames); FileInputStream fis = new FileInputStream(files); byte[] buffer = new byte[1024]; int len = 0; while ((len = fis.read(buffer)) > 0) { fos.write(buffer, 0, len); } fis.close(); fos.close(); /* 这儿填写你转化后的图片存放的文件夹 */ ImageChange r = new ImageChange(); String xx = newfilenames.substring(newfilenames.lastIndexOf("."), newfilenames.length()); if(ImageUtil.isImage(new File(root +"/"+ newfilenames))){ if(xx.indexOf("gif")>-1||xx.indexOf("GIF")>-1){ FileOutputStream fos1 = new FileOutputStream(root+"1/"+newfilenames); FileOutputStream fos2 = new FileOutputStream(root+"2/"+newfilenames); FileInputStream fis1 = new FileInputStream(files); FileInputStream fis2 = new FileInputStream(files); int len1 = 0;int len2 = 0; while ((len1 = fis1.read(buffer)) > 0 && (len2 = fis2.read(buffer)) > 0) { fos1.write(buffer, 0, len1); fos2.write(buffer, 0, len2); } fis1.close(); fis2.close(); fos1.close(); fos2.close(); } else { int width = Integer.valueOf(MyProperties.getByKey("width")); int width2 = Integer.valueOf(MyProperties.getByKey("width2")); /* 这个参数是要转化成的宽度 */ BufferedImage f = r.getBufferedImage(root +"/"+ newfilenames); url=root +"/"+ newfilenames; r.writeHighQuality(r.zoomImage(f, width), root +"1/", newfilenames); r.writeHighQuality(r.zoomImage(f, width2), root +"2/", newfilenames); f.flush(); } } } catch (Exception ex) { System.out.println("error:"+ex); t = false; } return t; }