yaml
key1: value1
key2: value2
list:
- item1
- item2
Yaml yaml = new Yaml();
InputStream inputStream = new FileInputStream("example.yaml");
Map<String, Object> data = yaml.load(inputStream);
yaml
name: John Doe
age: 30
public class Person {
private String name;
private int age;
// getters and setters
}
Yaml yaml = new Yaml();
InputStream inputStream = new FileInputStream("person.yaml");
Person person = yaml.loadAs(inputStream, Person.class);
public class CustomRepresenter extends Representer {
public CustomRepresenter() {
representers.put(CustomType.class, new RepresentCustomType());
}
private class RepresentCustomType extends Represent {
public Node representData(Object data) {
}
}
}
Yaml yaml = new Yaml(new CustomRepresenter());
CustomType customType = new CustomType();
String output = yaml.dump(customType);
Person person = new Person("John Doe", 30);
Yaml yaml = new Yaml();
String output = yaml.dump(person);
String yamlString = "name: John Doe
age: 30";
Yaml yaml = new Yaml();
Person person = yaml.loadAs(yamlString, Person.class);
public class CustomType {
private String value;
public CustomType(String value) {
this.value = value;
}
// getter and setter
}
public class CustomTypeConstructor extends Constructor {
public CustomTypeConstructor() {
yamlConstructors.put(Tag.STR, new ConstructCustomType());
}
private class ConstructCustomType extends AbstractConstruct {
public Object construct(Node node) {
String value = (String) constructScalar((ScalarNode) node);
return new CustomType(value);
}
}
}
Yaml yaml = new Yaml(new CustomTypeConstructor());
String yamlString = "!!str custom value";
CustomType customType = yaml.loadAs(yamlString, CustomType.class);
Yaml yaml = new Yaml();
Node node = yaml.loadAs(yamlString, Node.class);
node.setTag(Tag.MAP);
public class CustomScalarExtension implements Extension {
public void extend(Resolver resolver) {
resolver.addImplicitResolver(new Tag("!custom"), Pattern.compile("^\\!custom"), "!");
}
public void configure(DumperOptions options) {}
public void configure(DumperOptions.ScalarStyle style) {}
}
yaml
custom: !custom 123
public class CustomTypeConstructor extends BaseConstructor {
public CustomTypeConstructor() {
yamlConstructors.put(new Tag("!custom"), new ConstructCustomType());
}
private class ConstructCustomType extends AbstractConstruct {
public Object construct(Node node) {
ScalarNode scalarNode = (ScalarNode) node;
String value = scalarNode.getValue();
return new CustomType(value);
}
}
}
String yamlString = "custom: !custom 123";
Yaml yaml = new Yaml(new CustomTypeConstructor());
Map<String, Object> data = yaml.load(yamlString);
