如何将HTTP请求正文写入Java Web App中的文件？

Question

这是我的代码：

@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
        throws ServletException, IOException {
    final ServletInputStream inputStream = req.getInputStream();
    int read;
    File file = new File("koray.txt");
    final FileOutputStream fileOutputStream = new FileOutputStream(file);
    while ((read = inputStream.read()) != -1) {
        fileOutputStream.write(read);
    }
    fileOutputStream.flush();
    fileOutputStream.close();
}

当我收到这样的HTTP请求时：

beer-characteristics=ğ

在koray.txt中，我会看到：

beer-characteristics=%C4%9F

好吧，c49f似乎是'ğ'的utf-8十六进制值，但是为什么我看到文件中的hex值而不是'ğ'本身呢？

编辑：这也不起作用：

final OutputStreamWriter outputStreamWriter = new OutputStreamWriter(new FileOutputStream(file), "UTF-8");
while ((read = in.read()) != -1) {
    outputStreamWriter.write(read);
}

Answer 1

用以下内容包装您的输入流：

BufferedReader in = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"));

然后从utf-8中的缓冲读取器读取数据。