"Config" framework recommendation in the Java class library
"Config" framework recommendation in the Java class library
Overview:
In Java development, configuration files are a common practice to store the configuration information of applications.In order to manage and read these configuration information more efficiently, developers usually use frameworks called "Config".This article will introduce some commonly used Java "Config" frameworks and provide corresponding example code to help readers choose the configuration framework that suits their own projects.
1. Apache Commons Configuration:
Apache Commons Configuration is a top project under the Apache Open Source Software Foundation, which provides Java with an easy -to -use and flexible configuration management framework.It supports configuration information such as configuration files such as configuration files, databases, JAVA NAMING and DIRECTORY Interface) from different types of configuration files, databases, Java Naming and Directory Interface.Here are a sample code that uses Apache Commons Configuration to read the configuration file:
import org.apache.commons.configuration2.Configuration;
import org.apache.commons.configuration2.builder.FileBasedConfigurationBuilder;
import org.apache.commons.configuration2.builder.fluent.Parameters;
public class Example {
public static void main(String[] args) {
Parameters params = new Parameters();
FileBasedConfigurationBuilder<PropertiesConfiguration> builder =
new FileBasedConfigurationBuilder<>(PropertiesConfiguration.class)
.configure(params.properties()
.setFile(new File("config.properties")));
try {
Configuration config = builder.getConfiguration();
String value = config.getString("key");
System.out.println(value);
} catch (ConfigurationException e) {
e.printStackTrace();
}
}
}
2. Spring Boot Configuration:
Spring Boot is a popular Java development framework that provides a lot of convenient functions, including automatic loading and management of configuration files.Through the automatic configuration mechanism of Spring Boot, we can easily inject the attributes in the configuration file into the Java class.Here are a sample code that read the configuration using Spring Boot Configuration:
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.stereotype.Component;
@SpringBootApplication
@EnableConfigurationProperties(ConfigProperties.class)
public class Example {
private final ConfigProperties configProperties;
public Example(ConfigProperties configProperties) {
this.configProperties = configProperties;
}
public static void main(String[] args) {
SpringApplication.run(Example.class, args);
}
// Use @value notes to interpret configuration
@Value("${key}")
private String value;
// Use @ConfigurationProperties to interpret the configuration
@Component
@ConfigurationProperties(prefix = "prefix")
public static class ConfigProperties {
private String key;
public String getKey() {
return key;
}
public void setKey(String key) {
this.key = key;
}
}
}
3. Typesafe Config:
Typesafe Config is a lightweight Java configuration library with simple API and powerful features.It supports the configuration information from different format configuration files (such as JSON, HOCON, and Properties), and provides flexible and type secure access methods.The following is an example code that reads the configuration file with Typesafe Config:
import com.typesafe.config.Config;
import com.typesafe.config.ConfigFactory;
public class Example {
public static void main(String[] args) {
Config config = ConfigFactory.load("config");
String value = config.getString("key");
System.out.println(value);
}
}
in conclusion:
The three Java "Config" frameworks introduced above are very popular and widely used. They can help developers manage and read configuration information easier.When choosing a framework that suits you, you can make decisions based on your own project needs, performance requirements and team experience.In actual development, you can also meet the project configuration needs based on specific conditions and other frameworks or tools.
