Constreto :: Core Implementation 3.0.0 Beta4 Java Framework -Source Code Analysis (Constreto :: Core Implementation 3.0.0 Beta4 Java Framework -Source Code Analysis))

Constreto is an open source framework for configuration and coordination of Java applications.It provides a flexible and simple method to manage the configuration of the application, and can easily adjust the configuration according to different operating environments.The following is an analysis of the source code of the 3.0.0 Beta4 version of the coretto core, including some Java code examples. The core implementation of Constreto is the ConstretoConfiguration class, which is the core component of the entire framework.This class realizes the function of loading and analyzing the configuration files in the application, and provides a set of API to access the configuration value. The following is the basic usage example of the ConstitToConfiguration class: import org.constretto.ConstrettoBuilder; import org.constretto.ConstrettoConfiguration; import org.constretto.ConstrettoConfigurationBuilder; import org.constretto.exception.ConstrettoException; public class MyApp { private static final String CONFIG_LOCATION = "classpath:config.properties"; private static ConstrettoConfiguration configuration; public static void main(String[] args) { try { configuration = new ConstrettoBuilder() .createPropertiesStore() .addResource(CONFIG_LOCATION) .done() .getConfiguration(); } catch (ConstrettoException e) { // Treatment the configuration file to load the abnormal abnormality } // Access the configuration value through the API String dbUrl = configuration.evaluateToString("db.url"); int dbPort = configuration.evaluateTo("db.port", int.class); boolean debugMode = configuration.evaluateTo("debug.mode", boolean.class); // Print configuration value System.out.println ("Database URL:" + Dburl); System.out.println ("Database port:" + dbport); System.out.println ("Debug mode:" + Debugmode); } } In the above example, we created a ConstittoConfiguration instance with ConstretoBuilder, and specifically specified the type file of the configuration file through the CreatePropertiesstore () method.Then, we use the addResource () method to add the position of the configuration file. Here we use the "ClassPath: Config.properties" to specify the attribute file.Finally, we obtained the ConstitToConfiguration instance through the getConfiguration () method. After obtaining the ConstalToConfiguration instance, we can use the Evaluatetring () method to press the key value to retrieve the configuration value.The Evaluateto () method can return the configuration value with the required type.In an example, we visited the configuration values of "DB.URL", "DB.Port" and "Debug.mode", and converted into String, INT and BOOLEAN types. Finally, we verify the configuration value by printing the configuration value. In general, Constretto is a powerful and flexible Java framework that can be used to manage and coordinate the configuration of Java applications.By using constretto, developers can easily load and parside the configuration files and access configuration values through simple API.This makes it easy to adapt to different operating environments.