我如何从URL收集API数据？

Question

基本上，我有一个链接to a API，它基本上只显示一个巨大的stats JSON文件，如何使用Java最简单地获取在player.stats.Bedwars.winstreak下找到的“ winstreak”的值？

输入：Link to API输出：6

Answer 1

使用http java客户端调用您的API，并将其接受为String（JSON）。然后，您可以使用GSON库将该String / JSON转换为Java对象，该库用于将JSON解析为Java Object或将Java Object转换为JSON。

用法：

String json = `Your API call here`;
Gson gson = new Gson();
MyClass myObject = gson.fromJson(json, MyClass.class);


You will have to create some Model classes which will follow the same structure as your Json.

For Example:
If your JSON looks like  - {"name":"myname","age":8}

Then your MyClass will look like:
Class MyClass{
   private String name;
   private int age;

  //setters & getters
}


If your JSON looks like  - 
{
    "player": {
        "stats": {
            "Bedwars": {
                "winstreak": "your value";
            }
        }
    }
}

Your classes will look like this:

Class MyClass {
@JsonProperty("player")
private Player player;
//setters & getters
}

Class Player {
@JsonProperty("stats")
private Stats stats;
//setters & getters
}

Class Stats {
@JsonProperty("Bedwars")
private Bedwars bedwars;
//setters & getters
}

Class Bedwars {
@JsonProperty("winstreak")
private String winstreak;
//setters & getters
}

Hope this helps.