我如何从Java中的JSON字典中获取信息

Question

I have a dictionary on a website in form of json which looks for example like this:

"types":[{
    "id":"0",
    "name":"value1"
    },{
    "id":"1",
    "name":"value2"
    },{
    "id":"2",
    "name":"value3"
    }]

I cant find any useful example of a method that could help me retrieve that information and put it in, for example, a string array. Maybe anyone of you come across same problem please help!

PS I tried method like simplest way to read json from a URL in java with no success.

Answer 1

It is array of json object value whose key is types . You can use json-java library like gson, jackson,flexjson etc.. to parse this json object and achieve your required result.

GSON Example -

JsonElement jElement = new JsonParser().parse(jsonString);
JsonObject  jObject = jElement.getAsJsonObject();
jObject = jObject.getAsJsonObject("types");

Or you can use pojo class like -

public class Type {
  private int id;
  private String name;
  ...
}

gson.fromJson(jsonString, Type.class);

Refer java docs .