java

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;

import org.apache.commons.beanutils.BeanComparator;
import org.apache.commons.collections.ComparatorUtils;
import org.apache.commons.collections.comparators.ComparableComparator;
import org.apache.commons.collections.comparators.ComparatorChain;

public class CompareTipA {
	private int id;
	private String name;
	private String age;

	@SuppressWarnings("unchecked")
	public static void main(String[] args) {

		// 在列表中加入若干CompareTipA对象
		ArrayList<Object> list = new ArrayList<Object>();
		list.add(new CompareTipA(1, "3", "五"));
		list.add(new CompareTipA(1, "1", "六"));
		list.add(new CompareTipA(1, "5", "二"));
		list.add(new CompareTipA(1, "4", "四"));
		list.add(new CompareTipA(4, "2", "一"));

		// 创建一个排序规则
		Comparator mycmp = ComparableComparator.getInstance();
		mycmp = ComparatorUtils.nullLowComparator(mycmp); // 允许null
		mycmp = ComparatorUtils.reversedComparator(mycmp); // 逆序

		// 声明要排序的对象的属性，并指明所使用的排序规则，如果不指明，则用默认排序
		ArrayList<Object> sortFields = new ArrayList<Object>();
		sortFields.add(new BeanComparator("id", mycmp)); // id逆序 (主)
		sortFields.add(new BeanComparator("name")); // name正序 (副)

		// 创建一个排序链
		ComparatorChain multiSort = new ComparatorChain(sortFields);

		// 开始真正的排序，按照先主，后副的规则
		Collections.sort(list, multiSort);

		for (int i = 0; i < list.size(); i++) {
			System.out.println(list.get(i)); // 输出
		}
		/**
		 * 输出结果如下: [id=4,name=2,age=一] [id=1,name=1,age=六] [id=1,name=3,age=五]
		 * [id=1,name=4,age=四] [id=1,name=5,age=二]
		 */
	}

	public CompareTipA(int id, String name, String age) {
		this.id = id;
		this.name = name;
		this.age = age;
	}

	public int getId() {
		return this.id;
	}

	public void setId(int id) {
		this.id = id;
	}

	public String getName() {
		return this.name;
	}

	public void setName(String name) {
		this.name = name;
	}

//	public int compareTo(Object o) {
//		return this.comparator.compare(this, o);
//	}

	public String toString() {
		return "[id=" + this.id + ",name=" + this.name + ",age=" + this.age + "]";
	}

	public String getAge() {
		return age;
	}

	public void setAge(String age) {
		this.age = age;
	}
}