JSON

JSON: JavaScript Object Notation JS对象简谱 , 是一种轻量级的数据交换格式.
JAVA解析Json可以引入第三方类库 FastJson和Gjson

Gjson

将对象转换为JSON字符串
导入jar包后，代码实现如下

public class GsonDemo {
    public static void main(String[] args) {
        Gson gson = new Gson();
        String json = "[{\"id\":\"1\",\"name\":\"三国演义\",\"author\":\"罗贯中\",\"info\":\"东汉末年\",\"price\":\"192.0\"},{\"id\":\"2\",\"name\":\"水浒传\",\"author\":\"施耐庵\",\"info\":\"梁山好汉\",\"price\":\"192.0\"}]";
        String json1 ="{\"id\":\"1\",\"name\":\"三国演义\",\"author\":\"罗贯中\",\"info\":\"东汉末年\",\"price\":\"192.0\"}";
        //获取对象数组
        ArrayList<Book> arrayList = gson.fromJson(json, ArrayList.class);
        System.out.println(arrayList);
        //获取单个对象
        Book book = gson.fromJson(json1, Book.class);
        System.out.println(book);
        String json2 = gson.toJson(arrayList);
        System.out.println(json2);
    }
}

FastJson

导入jar包后，代码实现如下

public class FastJsonDemo {
    public static void main(String[] args) {

        String json = "[{\"id\":\"1\",\"name\":\"三国演义\",\"author\":\"罗贯中\",\"info\":\"东汉末年\",\"price\":\"192.0\"},{\"id\":\"2\",\"name\":\"水浒传\",\"author\":\"施耐庵\",\"info\":\"梁山好汉\",\"price\":\"192.0\"}]";
        String json1 ="{\"id\":\"1\",\"name\":\"三国演义\",\"author\":\"罗贯中\",\"info\":\"东汉末年\",\"price\":\"192.0\"}";
        //获取对象数组
        List<Book> arrayList = JSON.parseArray(json, Book.class);
        System.out.println(arrayList);
        //获取单个对象
        Book book =JSON.parseObject(json1, Book.class);
        System.out.println(book);
        //将对象转换成json字符串
        String json2 =JSON.toJSONString(arrayList);
        System.out.println(json2);
    }
}