The technical practice and principle interpretation of the KONIG YAML framework in the Java library
The technical practice and principle interpretation of the KONIG YAML framework in the Java library
Introduction:
KONIG YAML is a architecture definition and data serialization tool for the Java class library.This article will interpret Konig Yaml's technical practice and principles, and provides instance code to help readers better understand the framework.
1. The use of KONIG YAML
KONIG YAML can be used to define the architecture of and organize applications.It describes class, attributes, and relationships by specifying YAML files, so that applications can build data models and persistent storage based on these definitions.The following is a simple example:
yaml
Person:
type: class
properties:
name:
type: string
age:
type: integer
The above examples define a class called Person, which have two attributes: name and Age.The type of attribute name is a string, and the type of attribute AGE is an integer.In this way, the application can build a data model based on this definition.
2. Data serialization of Konig Yaml
KONIG YAML also provides data serialized functions that can convert the Java object into a string in YAML format and convert the string of YAML format into a Java object.The following is an example:
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
public class Main {
public static void main(String[] args) throws Exception {
ObjectMapper mapper = new ObjectMapper(new YAMLFactory());
Person person = new Person();
person.setName("John");
person.setAge(25);
// Convert Java objects to a string in YAML format
String yamlString = mapper.writeValueAsString(person);
System.out.println(yamlString);
// Convert yaml format string to Java object
Person personFromYaml = mapper.readValue(yamlString, Person.class);
System.out.println(personFromYaml.getName());
System.out.println(personFromYaml.getAge());
}
}
class Person {
private String name;
private int age;
// omit the getter and setter method
}
Through the above examples, we can see how to use Konig Yaml to convert the Java object into a string in YAML format, and how to convert the string of YAML format into a Java object.
3. The principle of Konig Yaml
The core principle of KONIG YAML is to use the Jackson library for serialization and derivativeization of data.The Jackson library is an open source Java library that is used to process data in JSON, XML, YAML and other formats.KONIG YAML uses the YAML processing function of the Jackson library, so that the Java class library can easily process YAML format data.
During the data serialization, Konig Yaml converts the Java object into a Yaml format string through ObjectMapper, and when the data is derived, Konig Yaml converts the yaml string into the Java object through ObjectMapper.
in conclusion:
KONIG YAML is a architecture definition and data serialization tool in the Java library.It describes classes, attributes, and relationships through the YAML file, while using the Jackson library to serialize and derives the data.Through KONIG YAML, developers can easily define the architecture of the application and implement the serialization and derivative function of data.
