Servlet获取表单中上传文件流
private InputStream getFileInputStream(){boolean isUpload = ServletFileUpload.isMultipartContent(request);if ( isUpload ) {DiskFileItemFactory factory = new DiskFileItemFactory();ServletFileUpload upload = new ServletFileUpload(factory);try { List<FileItem> items = upload.parseRequest(request); //解析request请求Iterator iter = items.iterator();while (iter.hasNext()) { FileItem item = (FileItem) iter.next(); if (!item.isFormField()) { //如果是表单域 ，就是非文件上传元素 //String fieldName = item.getFieldName(); //文件域中name属性的值 String filePath = item.getName(); //文件的全路径，绝对路径名加文件名 //String contentType = item.getContentType(); //文件的类型 //long size = item.getSize(); //文件的大小，以字节为单位 File saveFile = new File(filePath); //定义一个file指向一个具体的文件 FileInputStream in = new FileInputStream(saveFile); return in; } }}catch(Exception e) {}}return null;}