Interpret the technical principles and usage methods of the "JS YAML" framework in the Java library

JS YAML is a framework for parsing and generating YAML format data with Java.This article will explain the technical principles and use methods of JS YAML in detail, and provide relevant Java code example for reference. Technical principle: JS YAML is implemented in the Java language. Based on YAML (Yaml Ain'T Markup Language) specifications, the Yaml format data is analyzed as a Java object, and the Java object can be born into YAML format data.The technical principles of the JS YAML framework are briefly introduced below: 1. YAML analysis: JS YAML analyzes it as a Java object by reading the text file or string in YAML format.During the analysis process, it recognizes the basic data types of YAML (such as string, integer, floating point number, Boolean value, null, etc.), and correctly generate the corresponding Java object. 2. YAML Generation: JS YAML can convert the Java object into a text in YAML format, thereby achieving the generation of YAML data.It traverses the attributes of the Java object and converts it to the corresponding YAML data node. 3. Map and list: Map (MAP) and List (List) in YAML are commonly used data structures. JS YAML has the analysis and generating ability of mapping and list.It can convert the mapping structure of YAML into the MAP object of Java and convert the list structure of YAML into the list of Java. 4. Type conversion: The data type of YAML is not completely consistent with the data type of Java. JS YAML provides the function of type conversion.For example, it can convert the date time data of YAML to the Date object of Java. Instructions: Next introduce the use of JS YAML.Here are some common examples: 1. Analyze yaml file import org.yaml.snakeyaml.Yaml; public class YamlParser { public static void main(String[] args) { Yaml yaml = new Yaml(); // Read yaml file try (InputStream inputStream = YamlParser.class .getClassLoader() .getResourceAsStream("data.yaml")) { // Analyze the yaml file as the Java object Map<String, Object> obj = yaml.load(inputStream); // Output resolution results System.out.println(obj); } catch (IOException e) { e.printStackTrace(); } } } 2. Generate YAML data import org.yaml.snakeyaml.Yaml; public class YamlGenerator { public static void main(String[] args) { Yaml yaml = new Yaml(); // Create a Java object Map<String, Object> obj = new HashMap<>(); obj.put("name", "John"); obj.put("age", 25); // Generate YAML data String yamlData = yaml.dump(obj); // Output generation results System.out.println(yamlData); } } It should be noted that when using JS YAML, you need to introduce related dependencies, such as Snakeyaml. In summary, JS YAML is a Java framework for parsing and generating YAML data.Through the API provided, you can handle YAML data flexibly, convert it to the Java object or give the Java object into YAML format data.Through the code example provided here, readers can better understand and use the JS YAML framework.