使用Gson遍历Json文件

Gson gson = new Gson();

try {
    FileReader fileReader = new FileReader("path/to/json/file.json");
    BufferedReader bufferedReader = new BufferedReader(fileReader);
    StringBuilder stringBuilder = new StringBuilder();
    String line;
    while ((line = bufferedReader.readLine()) != null) {
        stringBuilder.append(line);
    }
    bufferedReader.close();
    String json = stringBuilder.toString();
} catch (IOException e) {
    e.printStackTrace();
}

try {
    MyObject myObject = gson.fromJson(json, MyObject.class);
    // 遍历对象的方式访问Json文件中的数据
    // 例如，访问名为"key"的属性
    String value = myObject.getKey();
} catch (JsonSyntaxException e) {
    e.printStackTrace();
}