Java Beanutils 简明教程
Java BeanUtils - Basic DynaBeans
Description
BasicDynaBean 和 BasicDynaClass 的实现指定了动态属性的能力,以动态地提供属性集。你可以从 DynaClass 着手以建立属性集。一个 newInstance() 方法将为 DynaClass 创建新的 DynaBean 实例并占用其初始值,如下面的示例所示。
Example
以下示例显示了基本 DynaBean 实现的使用方法:
package com.javadb.apachecommons;
import org.apache.commons.beanutils.BasicDynaClass;
import org.apache.commons.beanutils.DynaBean;
import org.apache.commons.beanutils.DynaClass;
import org.apache.commons.beanutils.DynaProperty;
public class DynaBeanExample {
private final String NR_OF_WHEELS = "numberOfWheels";
private void runExample() {
DynaClass dynaClass = new BasicDynaClass("Car", null,
new DynaProperty[] {
new DynaProperty(NR_OF_WHEELS, Integer.TYPE)
});
try {
DynaBean car = dynaClass.newInstance();
car.set(NR_OF_WHEELS, 4);
System.out.println("Number of wheels: " + car.get(NR_OF_WHEELS));
System.out.println("DynaBean is instance of DynaClass: " + car.getDynaClass().getName());
} catch (IllegalAccessException | InstantiationException ex) {
System.err.println(ex.getMessage());
}
}
public static void main(String[] args) {
DynaBeanExample ac = new DynaBeanExample();
ac.runExample();
}
}