package com.test;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
/**
 * List多重規(guī)則排序測試類
 */
public class TestCompartor {
  public static void main(String[] args) {
    ArrayList<Coupon> persons = new ArrayList<Coupon>();
    persons.add(new Coupon(13,0,new BigDecimal(40)));
    persons.add(new Coupon(13,0,new BigDecimal(50)));
    persons.add(new Coupon(13,0,new BigDecimal(45)));
    persons.add(new Coupon(1,0,new BigDecimal(20)));
    persons.add(new Coupon(13,1,new BigDecimal(30)));
    persons.add(new Coupon(1,0,new BigDecimal(25)));
    persons.add(new Coupon(11,0,new BigDecimal(50)));
    persons.add(new Coupon(11,1,new BigDecimal(40)));
    System.out.println("排序之前：");
    for (int i = 0; i <persons.size(); i++) {
      System.out.println(persons.get(i));
    }
    System.out.println();
    Collections.sort(persons, new Comparator<Coupon>() {
      //按可用升序，券類型降序，面額降序
      public int compare(Coupon o1, Coupon o2) {
        if (o1.valueAble.compareTo(o2.valueAble)==0){
         if(o2.themeType.compareTo(o1.themeType)==0){
         return o2.amount.compareTo(o1.amount)>0?1:-1;
         }else{
         return o2.themeType - o1.themeType;
         }
        }else{
          return o1.valueAble-o2.valueAble ;
        }
      }
    });
    System.out.println("排序后結(jié)果：");
    for (int i = 0; i <persons.size(); i++) {
      System.out.println(persons.get(i));
    }
  }
  static class Coupon{
    public Integer themeType; //優(yōu)惠券類型
    public Integer valueAble; //可用 ，0 可用，1不可用
    public BigDecimal amount; //面額
    @Override
    public String toString() {
      return "Person{" +
          "themeType=" + themeType +
          ", valueAble=" + valueAble +
          ", amount=" + amount +
          '}';
    }
 public Coupon(Integer themeType, Integer valueAble, BigDecimal amount) {
  super();
  this.themeType = themeType;
  this.valueAble = valueAble;
  this.amount = amount;
 }
  }
}

至于封裝工具類我就懶得弄了，有需要的自己封裝吧。

這里如果用了Integer等封裝類型，最好自己也做下非空處理。

排序之前：

Person{themeType=13, valueAble=0, amount=40} Person{themeType=13, valueAble=0, amount=50} Person{themeType=13, valueAble=0, amount=45} Person{themeType=1, valueAble=0, amount=20} Person{themeType=13, valueAble=1, amount=30} Person{themeType=1, valueAble=0, amount=25} Person{themeType=11, valueAble=0, amount=50} Person{themeType=11, valueAble=1, amount=40}

排序后結(jié)果：

Person{themeType=13, valueAble=0, amount=50} Person{themeType=13, valueAble=0, amount=45} Person{themeType=13, valueAble=0, amount=40} Person{themeType=11, valueAble=0, amount=50} Person{themeType=1, valueAble=0, amount=25} Person{themeType=1, valueAble=0, amount=20} Person{themeType=13, valueAble=1, amount=30} Person{themeType=11, valueAble=1, amount=40}

總結(jié)

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