如何从java资产文件夹读取和写入UTF-8编码？我有密码，但不起作用。我得到࿽；D和xffd；nde est࿽；/D和xffd；无损检测

我使用assetManager获取inputstream，并使用指定的UTF-8编码将其作为reader的参数传递。 我还使用UTF-8中的writer编写outputstream文件路径

文件已读写，但编码仍然错误。我有这样的角色： 你在哪里�D�无损检测� / D�无损检测

---

我做错了什么？

您确定输入文件是用UTF-8编码的吗？这个� 您可以在输出中看到一个字符，用于替换读取时无法转换为字符的字节序列

您可以制作二进制副本，而不是对文本进行解码和编码：

  private void CopyAssets2() {
    AssetManager assetManager = getAssets();
    String[] files = null;
    try {
        files = assetManager.list("");
    } catch (IOException e) {
        Log.e("File Error", e.getMessage());
    }
    for (String filename : files) {
        InputStream in = null;
        OutputStream out = null;
        try {
            in = assetManager.open(filename);
            out = new FileOutputStream("/sdcard/Translate/" + filename);
            copyFile2(in, out);
            in.close();
            in = null;
            out.flush();
            out.close();
            out = null;
        } catch (Exception e) {
            Log.e("Save Error", e.getMessage());
        }
    }
}

private void copyFile2(InputStream in, OutputStream out)
            throws IOException {
    char[] buffer = new char[1024];
    Reader reader = new BufferedReader( new InputStreamReader(in, "UTF-8"));

    Writer writer = new BufferedWriter(new OutputStreamWriter(out, "UTF-8"));

    int read;
    while ((read = reader.read(buffer)) != -1) {
        writer.write(buffer, 0, read);
    }
    reader.close();
    writer.flush();
    writer.close();
}

---

在此为您提供了解决方案[UTF-8格式读取文本文件][1][1]：

byte[] buffer = new byte[1024];

InputStream reader = new BufferedInputStream(in);

OutputStream writer = new BufferedOutputStream(out);

int read;
while ((read = reader.read(buffer)) != -1) {
    writer.write(buffer, 0, read);
}