将JSON响应表示为Java类的方法有多种,以下是一种常见的方法:
以下是一个示例,展示如何将以下JSON响应表示为Java类:
{
"name": "John",
"age": 30,
"address": {
"street": "123 Main St",
"city": "New York"
},
"hobbies": ["reading", "traveling"]
}
对应的Java类可以如下所示:
public class Person {
private String name;
private int age;
private Address address;
private List<String> hobbies;
// Getters and setters
public static class Address {
private String street;
private String city;
// Getters and setters
}
}
使用Jackson库将JSON响应转换为Java对象的示例代码如下:
ObjectMapper objectMapper = new ObjectMapper();
String json = "{\"name\":\"John\",\"age\":30,\"address\":{\"street\":\"123 Main St\",\"city\":\"New York\"},\"hobbies\":[\"reading\",\"traveling\"]}";
try {
Person person = objectMapper.readValue(json, Person.class);
System.out.println(person.getName()); // Output: John
System.out.println(person.getAddress().getCity()); // Output: New York
System.out.println(person.getHobbies().get(0)); // Output: reading
} catch (JsonProcessingException e) {
e.printStackTrace();
}
以上示例中,我们使用Jackson库的readValue
方法将JSON字符串转换为Person
类的对象。然后,我们可以通过访问对象的属性来获取JSON中的值。
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