android - 如何从原始文件夹中获取 json 文件？

Question

我想使用原始文件夹中的 user.json 来获取新文件:

// read from file, convert it to user class
User user = mapper.readValue(new File(**R.raw.user**), User.class);

我发现 InputStream 可以做到:

InputStream ins = res.openRawResource(
                        getResources().getIdentifier("raw/user",
                                "raw", getPackageName()));

有没有更好的方法，直接使用我的 json 文件 ID？

Answer 1

InputStream is = getResources().openRawResource(R.raw.json_file);
Writer writer = new StringWriter();
char[] buffer = new char[1024];
try {
    Reader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
    int n;
    while ((n = reader.read(buffer)) != -1) {
        writer.write(buffer, 0, n);
    }
} finally {
    is.close();
}

String jsonString = writer.toString();