使用前需要导入## gson-2.2.4

    public static void main(String[] args) {


        try {
            JsonParser parser=new JsonParser();  //解析器
            JsonObject object=(JsonObject) parser.parse(new FileReader("json.json"));

            JsonArray array=object.getAsJsonArray("数据1").getAsJsonArray();
            for(int i=0;i<array.size();i++) {
                System.out.println("---------");
                JsonObject subObject=array.get(i).getAsJsonObject();
                System.out.println(subObject.get("id").getAsString());
            }
        } catch (JsonIOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (JsonSyntaxException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

{
"cat":"it",
"数据1":
[
    {"id":1,"ide":"Eclipse","name":"java"},
        {"id":2,"ide":"Eclipse2","name":"java2"},
            {"id":3,"ide":"Eclipse3","name":"java3"}
    ],
    "pop":true
}