Using Snakeyaml to read YAML configuration files

Many applications are beginning to use YAML as a program configuration file, about Yaml detailed introduction can refer to Yaml 1.2 (3rd Edition), this article uses Snakeyaml to parse Yaml. maven Dependencies

<dependency>
    <groupId>org.yaml</groupId>
    <artifactid>snakeyaml</artifactid >
    <version>1.17</version>
</dependency>

Sample sample.yml

version:1.0
released:2017-02-14

# Connection parameters
Connection:
    driverclass: Com.mysql.jdbc.Driver
    url:jdbc:mysql://localhost:3306/db
    username:root
    password:12345
    Poolsize:5

# Protocols
protocols:
   -HTTP
   -HTTPS

# developers
developers:
    Tom: Tom@gmail.com
    bob:bob@gmail.com

the corresponding JavaBean class

Connection.java

Package Com.bytebeats.code.yaml.model; /** * ${description} * * @author Ricky Fung * @date 2017-02-14 15:18 * * public class Connection {private String
    Driverclass;
    Private String URL;
    Private String username;
    private String password;

    private int poolsize;
    Public String Getdriverclass () {return driverclass;
    } public void Setdriverclass (String driverclass) {this.driverclass = Driverclass;
    Public String GetUrl () {return URL;
    public void SetUrl (String url) {this.url = URL;
    Public String GetUserName () {return username;
    } public void Setusername (String username) {this.username = username;
    Public String GetPassword () {return password;
    } public void SetPassword (String password) {this.password = password;
    public int getpoolsize () {return poolsize;
     } public void setpoolsize (int poolsize) {   This.poolsize = poolsize;
 }

}

Configuration.java

Package Com.bytebeats.code.yaml.model;
Import Java.util.Date;
Import java.util.List;

Import Java.util.Map;  /** * ${description} * * @author Ricky Fung * @date 2017-02-14 15:18 * * public class Configuration {private date
    Released;
    Private String version;
    Private Connection Connection;
    Private list<string> protocols;

    Private map<string, string> developers;
    Public Date getreleased () {return released;
    The public void Setreleased (Date released) {this.released = released;
    Public String GetVersion () {return version;
    public void Setversion (String version) {this.version = version;
    Public Connection getconnection () {return Connection;
    public void SetConnection (Connection Connection) {this.connection = Connection;
    Public list<string> Getprotocols () {return protocols; } public void Setprotocols (list<string> prOtocols) {this.protocols = protocols;
    Public map<string, String> getdevelopers () {return developers;
    public void Setdevelopers (map<string, string> developers) {this.developers = developers;
 }

}

parsing Yaml

Yaml Yaml = new Yaml ();
try {
    InputStream in = SnakeYAMLTest.class.getResourceAsStream ("/sample.yml");
    Configuration config = Yaml.loadas (in, configuration.class);
    System.out.println (config);
catch (Exception e) {
    e.printstacktrace ();
}

Serialization of

Configuration config = new Configuration ();
config.setreleased (New Date ());
Config.setversion ("1.0");

Connection Connection = new Connection ();
Connection.setdriverclass ("Com.mysql.jdbc.Driver");
Connection.seturl ("jdbc:mysql://localhost:3306/db");
Connection.setusername ("root");
Connection.setpassword ("root");
Connection.setpoolsize (ten);
Config.setconnection (connection);

Config.setprotocols (arrays.aslist ("http", "https"));
Config.setdevelopers (New hashmap<string, string> ());

Yaml Yaml = new Yaml ();
String output = yaml.dump (config);
SYSTEM.OUT.PRINTLN (output);

Source Code

Https://github.com/TiFG/daily-codelab/tree/master/yaml-sample