org.apache.commons.fileupload.DiskFileUpload Java Examples

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Example #1

Source File: UploadRequestWrapper.java From java-tutorial with Creative Commons Attribution Share Alike 4.0 International

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@SuppressWarnings("all")
public UploadRequestWrapper(HttpServletRequest request) {

	super(request);

	// 判断是否为上传文件
	multipart = request.getHeader(MULTIPART_HEADER) != null
		&& request.getHeader(MULTIPART_HEADER).startsWith("multipart/form-data");

	if (multipart) {

		try {
			// 使用apache的工具解析
			DiskFileUpload upload = new DiskFileUpload();
			upload.setHeaderEncoding("utf8");

			// 解析，获得所有的文本域与文件域
			List<FileItem> fileItems = upload.parseRequest(request);

			for (Iterator<FileItem> it = fileItems.iterator(); it.hasNext(); ) {

				// 遍历
				FileItem item = it.next();
				if (item.isFormField()) {

					// 如果是文本域，直接放到map里
					params.put(item.getFieldName(), item.getString("utf8"));
				} else {

					// 否则，为文件，先获取文件名称
					String filename = item.getName().replace("\\", "/");
					filename = filename.substring(filename.lastIndexOf("/") + 1);

					// 保存到系统临时文件夹中
					File file = new File(System.getProperty("java.io.tmpdir"), filename);

					// 保存文件内容
					OutputStream ous = new FileOutputStream(file);
					ous.write(item.get());
					ous.close();

					// 放到map中
					params.put(item.getFieldName(), file);
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}