如何从保存在SD卡中的json文件中读取数据？

I would like to know using Android Studio how to load & read a json file saved in the sdcard?
The json file contains simple json objects. Also after getting the data how can i parse it & set it as pojo.

我想知道如何使用Android Studio加载和读取保存在SD卡中的json文件? json文件包含简单的json对象。获取数据后,我如何解析它并将其设置为pojo。

Json example: { "name":"Abcd", "id":"xyz" }

Json示例:{“name”:“Abcd”,“id”:“xyz”}

Thanks.

1 个解决方案

#1

Reading file:

InputStream iStream = new FileInputStream("filename.json"); 
BufferedReader bReader = new BufferedReader(new InputStreamReader(iStream));
String line; 
String content = "";
while((line = bReader.readLine()) != null) { 
    content += line;
}

the easiest way to convert to POJO is to use one of the popular libraries (Gson, Jackson, etc). Using Gson:

转换为POJO的最简单方法是使用一个流行的库(Gson,Jackson等)。使用Gson:

Gson gson = new GsonBuilder().create();
gson.fromJson(content, Pojo.class);