Spring4.0支持Groovy配置

介绍

前一段时间观注了一下Spring4.0的一些特性，当中就有对Groovy配置的支持。因为临时还没有很深入的研究。所以举个小样例来说明一下怎样支持Groovy配置。

package shuai.study.spring.bean;public class Gasoline {
private int capacity = 0;public Gasoline(int capacity) {
this.capacity = capacity;
}public int getCapacity() {
return this.capacity;
}
}

package shuai.study.spring.bean;public class Car {
private String name = null;
private Gasoline gasoline = null;public Car(Gasoline gasoline) {
this.gasoline = gasoline;
}public void setName(String name) {
this.name = name;
}public void run() {
int capacity = gasoline.getCapacity();if (gasoline.getCapacity() > 100) {
System.out.println("Gasoline capacity is " + capacity + ", " + this.name + " could start to run.");
} else {
System.out.println("Gasoline capacity is " + capacity + ", " + this.name + " is not enough to run.");
}
}
}

car-config.groovy configuration file:

import shuai.study.spring.bean.Car
import shuai.study.spring.bean.Gasolinebeans {
/*
In class Car, we know that we defined variable gasoline as parameter of Car's constructor.
Here we point out this variable's class(i.e. Gasoline), meanwhile set parameter's value of
(Gasoline's) constructor
*/
    gasoline(Gasoline, 80)/*
Define bean(i.e. car), and point out this bean's class(i.e. Car), meanwhile inject variable
gasoline to it. naturally we inject its variable(i.e. name) as well.
*/
    car(Car, gasoline) {
        name = "Benz"
    }
}

package shuai.study.spring.bean;import org.springframework.context.support.GenericGroovyApplicationContext;public class CarApp {@SuppressWarnings("resource")
public static void main(String[] args) {
GenericGroovyApplicationContext context = new GenericGroovyApplicationContext("classpath:spring/bean/car-config.groovy");Car car = (Car) context.getBean("car");
car.run();
}
}