Android无法读取json文件中的所有行

try {
    BufferedReader reader = new BufferedReader(new InputStreamReader(getAssets().open("file.json")));
    String line;
    StringBuilder stringBuilder = new StringBuilder();
    while ((line = reader.readLine()) != null) {
        stringBuilder.append(line);
    }
    reader.close();
    String jsonContent = stringBuilder.toString();
    // 处理jsonContent
} catch (IOException e) {
    e.printStackTrace();
}

try {
    BufferedReader reader = new BufferedReader(new InputStreamReader(getAssets().open("file.json")));
    Gson gson = new Gson();
    JsonElement jsonElement = gson.fromJson(reader, JsonElement.class);
    String jsonContent = jsonElement.toString();
    // 处理jsonContent
    reader.close();
} catch (IOException e) {
    e.printStackTrace();
}

try {
    BufferedReader reader = new BufferedReader(new InputStreamReader(getAssets().open("file.json")));
    ObjectMapper objectMapper = new ObjectMapper();
    JsonNode jsonNode = objectMapper.readTree(reader);
    String jsonContent = jsonNode.toString();
    // 处理jsonContent
    reader.close();
} catch (IOException e) {
    e.printStackTrace();
}