Exploring the Technical Origin of Jsony Framework in Java Class Libraries
Jsony is an open source framework for processing JSON data in Java class libraries. It provides simple and powerful features that enable developers to easily convert Java objects into JSON format and convert JSON format back into Java objects.
Using the Jsony framework, we can easily serialize and deserialize JSON objects. Here are some common techniques for using the Jsony framework in Java class libraries:
1. JSON object serialization: Converting Java objects to JSON format is a major feature of the Jsony framework. We only need to define a Java class and use annotations to mark its properties as fields to be serialized. Then, use the toJson() method of the Jsony framework to convert the Java object into a JSON string.
import io.jsonty.JsonObject;
import io.jsonty.annotation.JsonProperty;
public class Person {
@JsonProperty("name")
private String name;
@JsonProperty("age")
private int age;
//Omitting constructors, getters, and setter methods
public static void main(String[] args) {
Person person=new Person ("Zhang San", 25);
String jsonString = JsonObject.toJson(person);
System.out.println(jsonString);
}
}
Running the above code will output the following JSON string:
{"name": "Zhang San", "age": 25}
2. JSON object deserialization: Converting JSON strings back to Java objects is also an important feature of the Jpersonality framework. We can use the from Json () method to convert JSON strings into Java objects.
import io.jsonty.JsonObject;
public class Person {
private String name;
private int age;
//Omitting constructors, getters, and setter methods
public static void main(String[] args) {
String jsonString="{" name ": " Zhang San ", " age ": 25}";
Person person = JsonObject.fromJson(jsonString, Person.class);
System.out.println(person.getName());
System.out.println(person.getAge());
}
}
Running the above code will output the following results:
wolf
25
3. Complex object serialization: The Jsony framework can also handle the serialization and deserialization of complex objects, such as nested objects and collection types. We only need to add corresponding nested objects or set attributes to the object and label them with annotations.
import io.jsonty.JsonObject;
import io.jsonty.annotation.JsonProperty;
import java.util.List;
public class Company {
@JsonProperty("name")
private String name;
@JsonProperty("employees")
private List<Person> employees;
//Omitting constructors, getters, and setter methods
public static void main(String[] args) {
Person employee1=new Person ("Zhang San", 25);
Person employee2=new Person ("Li Si", 30);
List<Person> employees = List.of(employee1, employee2);
Company company=new Company ("ABC Company", employees);
String jsonString = JsonObject.toJson(company);
System.out.println(jsonString);
Company companyObj = JsonObject.fromJson(jsonString, Company.class);
System.out.println(companyObj.getName());
for (Person employee : companyObj.getEmployees()) {
System.out.println(employee.getName());
}
}
}
Running the above code will output the following JSON string and result:
{
"Name": "ABC Company",
"employees": [
{
"Name": "Zhang San",
"age": 25
},
{
"Name": "Li Si",
"age": 30
}
]
}
ABC Company
wolf
Li Si
Summary:
The Jsony framework provides powerful JSON serialization and deserialization capabilities in Java class libraries. Developers can easily convert Java objects into JSON format and convert JSON strings into Java objects. Jsony can handle both simple and complex objects very well. This makes processing JSON data in Java applications more concise and convenient.
