import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
public class YamlExample {
private static final ObjectMapper objectMapper = new ObjectMapper(new YAMLFactory());
public static void main(String[] args) throws Exception {
User user = new User("John Doe", 30);
String yaml = objectMapper.writeValueAsString(user);
System.out.println(yaml);
User deserializedUser = objectMapper.readValue(yaml, User.class);
System.out.println(deserializedUser.getName());
System.out.println(deserializedUser.getAge());
}
static class User {
private String name;
private int age;
public User() {}
public User(String name, int age) {
this.name = name;
this.age = age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
}
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
public class SpecialCharactersExample {
private static final ObjectMapper objectMapper = new ObjectMapper(new YAMLFactory());
public static void main(String[] args) throws Exception {
String yaml = "name: 'John : Doe'
age: 30
description: 'This is a YAML: example'";
SpecialCharactersUser user = objectMapper.readValue(yaml, SpecialCharactersUser.class);
System.out.println(user.getName());
System.out.println(user.getAge());
System.out.println(user.getDescription());
}
@JsonIgnoreProperties(ignoreUnknown = true)
static class SpecialCharactersUser {
private String name;
private int age;
private String description;
// getters and setters
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
}
}
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
import java.io.File;
public class CustomYamlExample {
public static void main(String[] args) throws Exception {
YAMLFactory yamlFactory = new YAMLFactory();
ObjectMapper objectMapper = new ObjectMapper(yamlFactory);
File configFile = new File("config.yaml");
Config config = objectMapper.readValue(configFile, Config.class);
System.out.println("Server IP: " + config.getServer().getIp());
System.out.println("Server Port: " + config.getServer().getPort());
}
static class Config {
private Server server;
// getters and setters
public Server getServer() {
return server;
}
public void setServer(Server server) {
this.server = server;
}
}
static class Server {
private String ip;
private int port;
// getters and setters
public String getIp() {
return ip;
}
public void setIp(String ip) {
this.ip = ip;
}
public int getPort() {
return port;
}
public void setPort(int port) {
this.port = port;
}
}
}
