java - Java 中的 JSON 数组

Question

因此，我希望将大量用户添加到允许 http post 请求的群组消息应用程序中，并且我将尝试使用文件上传功能从 JSON 中读取数据，但我有点困惑如何用java编写这个:

{
  "members": [
    {
      "nickname": "Mom",
      "user_id": "1234567890",
      "guid": "GUID-1"
    },
    {
      "nickname": "Dad",
      "phone_number": "+1 2123001234",
      "guid": "GUID-2"
    },
    {
      "nickname": "Jane",
      "email": "jane@example.com",
      "guid": "GUID-3"
    }
  ]
}

这是我需要写入的 JSON 文件的示例，有人可以解释如何用 Java 编写它吗？ (它需要昵称和电话号码字段，每人只需这两个)谢谢!

编辑1:抱歉，不清楚。我需要使用 Java 生成包含这些内容的文件。

Answer 1

尝试一下https://github.com/google/gson

http://www.studytrails.com/java/json/java-google-json-parse-json-to-java.jsp

示例:

import com.google.gson.Gson;

public class JavaToJsonAndBack {

    public static void main(String[] args) {
        Albums albums = new Albums();
        albums.title = "Free Music Archive - Albums";
        albums.message = "";
        albums.total = "11259";
        albums.total_pages = 2252;
        albums.page = 1;
        albums.limit = "5";
        GsonBuilder builder = new GsonBuilder();
        Gson gson = builder.create();
        System.out.println(gson.toJson(albums));

    }
}

This is how the resulting JSON looks like

{"title":"Free Music Archive - Albums","message":"","errors":[],
"total":"11259","total_pages":2252,"page":1,"limit":"5"}