Reveal the technical principles of the "Iron Adjustable Behavior" framework in the Java class library
Reveal the technical principles of the "Iron Adjustable Behavior" framework in the Java class library
introduction:
In the daily development process, we often need to adjust the application behavior according to different needs.In the Java class library, a widely used framework is called "Tunable Behavior".This framework can help us dynamically adjust the application of the application through a flexible way, so that it has better scalability and customization.This article will reveal the technical principles of the framework and provide some Java code examples to help readers better understand.
First, what is iron can adjust the behavior framework?
Iron adjustment behavior framework is a design mode that uses a set of configurable parameters to achieve dynamic adjustment of system behavior.Its core idea is to separate the application of the application from the specific implementation, so that it can change the operating behavior of the system without modifying the code.By using this framework, we can flexibly configure and manage the system's behavior according to the needs without the need to re -compile and deploy the entire application.
Second, the technical principle of iron can adjust the behavior framework
The technical principles of iron adjustment behavior framework are read based on the reflection mechanism and configuration files in the Java class library.The main steps are as follows:
1. Create an interface or abstract class that can be adjusted.
First of all, when designing applications, we need to define a set of interfaces or abstract classes to represent different options for adjusting behaviors.For example, if we are designing a log system, we can define an interface called "Logger", which contains various types of log output methods.
public interface Logger {
void log(String message);
}
2. Implement the specific class of adjustable behavior
We then need to create a specific implementation class for each adjustable behavior.These specific classes will implement interfaces or abstract classes and provide specific behaviors.For example, we can create a specific class called "ConsoleLogger" to output log messages to the console.
public class ConsoleLogger implements Logger {
@Override
public void log(String message) {
System.out.println(message);
}
}
3. Create a configuration file with adjustable behavior
Next, we need to create a configuration file for specifying the current selected behavior.This configuration file can be stored in formats such as XML, JSON or attribute files, and contains parameters related to adjustable behaviors.For example, we can create a attribute file called "Logger.properties" and set the "logger" property to the actual class of the actual use.
properties
logger=com.example.ConsoleLogger
4. Load and instantiated behavior object
When the application starts, we need to read the configuration file and dynamically load and instantize the specific behavior category according to their content.Here you can use Java's reflection mechanism to implement.
public class BehaviorFactory {
public static Logger createLogger() throws Exception {
Properties properties = new Properties();
properties.load(new FileInputStream("logger.properties"));
String loggerClass = properties.getProperty("logger");
return (Logger) Class.forName(loggerClass).newInstance();
}
}
5. Use adjustable behavior
Once the behavior object is successfully loaded and instantiated, we can use it in other parts of the application.For example, we can call the "log" method of the "Logger" interface to output log messages.
public class Application {
public static void main(String[] args) {
try {
Logger logger = BehaviorFactory.createLogger();
logger.log("Hello, world!");
} catch (Exception e) {
e.printStackTrace();
}
}
}
By modifying the behavioral options in the configuration file, we can easily change the application behavior without modifying the code.
3. Summary
Iron adjustment of behavior framework provides a flexible way to dynamically adjust the application behavior.It is based on the reading of the reflection mechanism and configuration file, and can achieve dynamic adjustment of system behavior during runtime.Through this framework, we can easily modify the behavior of the application without re -compilation and deployment.It is hoped that this article can help readers understand and apply iron adjustment of the behavior framework, and improve the scalability and customization of the system in actual development.
