Master Plexus :: Default Container framework to improve the development efficiency of the Java library
Master Plexus :: Default Container framework to improve the development efficiency of the Java library
Plexus is a powerful IOC (INVERSION of Control) container framework, which provides convenience and efficiency for the development of the Java class library.This article will introduce how to use Plexus :: DEFAULT Container framework, and to display its usage through the Java code example.
## What is Plexus :: Default Container framework?
Plexus is an open source Java IOC container framework, which aims to promote the reuse and tactics of components.Plexus :: default Container is the default implementation of Plexus, providing a lightweight container that can be used to load, configure and manage components.
The core concept of Plexus :: Default Container is component and roles.Components are reusable parts in the application, and the character defines the role and behavior of the component in the container.By configured the mapping relationship between characters and components, the Plexus framework can automatically load and manage component instances.
## How to use Plexus :: Default Container framework?
First of all, we need to add pLEXUS :: default Container to the project's pom.xml file:
<dependency>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-container-default</artifactId>
<version>1.7.1</version>
</dependency>
Before using Plexus :: Default Container, we need to define components and characters.The character can be defined by creating a Java interface, specifying the behavior and methods of components.For example, we define a role called `mycomponent`:
public interface MyComponent {
void doSomething();
}
Next, we created a component class that implemented the `mycomponent` interface` mycomponentimpl`:
public class MyComponentImpl implements MyComponent {
public void doSomething() {
// Implement the custom logic
System.out.println("Doing something...");
}
}
Now, we can map the characters and components by configure the file `Components.xml`:
<component>
<role>com.example.MyComponent</role>
<implementation>com.example.MyComponentImpl</implementation>
</component>
Finally, we can use Plexus :: DEFAULT Container to load and manage component instances:
public static void main(String[] args) {
try {
PlexusContainer container = new DefaultPlexusContainer();
MyComponent myComponent = (MyComponent) container.lookup(MyComponent.class.getName());
myComponent.doSomething();
container.release(myComponent);
} catch (Exception e) {
e.printStackTrace();
}
}
In the above code, we first created an instance of `PlexusContainer`, and then use the` Lookup` method to obtain the component instance through the character name and call its method.Finally, we use the `release` method to release the component instance.
Through the Plexus :: Default Container framework, we can easily load and manage components to improve the development efficiency of the Java library.
## Summarize
This article introduces the basic concept and usage of Plexus :: Default Container framework.By defining characters and components, and then using the Plexus container to load and manage components, we can improve the efficiency of the development of the Java library.I hope this article can help readers better master the use of Plexus :: default Container framework.
