泛型集合排序，根据实体类对象的某个属性排序

标签：泛型集合排序   根据集合中实体类的某个属性值排序   属性排序   

泛型集合排序，根据实体类对象的某个属性排序

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;

import sy.model.aite.analysis.SelfTestAnalysis;

/**
 * 泛型集合排序，根据实体类对象的某个属性排序
 * @author admin
 *
 * @param <E>
 */
public class SortList<E> {
	
	public void Sort(List<E> list, final String method, final String sort) {
		Collections.sort(list, new Comparator<Object>() {
			public int compare(Object a, Object b) {
				int ret = 0;
				try {
					Method m1 = ((E) a).getClass().getMethod(method, null);
					Method m2 = ((E) b).getClass().getMethod(method, null);
					if (sort != null && "desc".equals(sort))// 倒序
						ret = m2.invoke(((E) b), null).toString()
								.compareTo(m1.invoke(((E) a), null).toString());
					else
						// 正序
						ret = m1.invoke(((E) a), null).toString()
								.compareTo(m2.invoke(((E) b), null).toString());
				} catch (NoSuchMethodException ne) {
					System.out.println(ne);
				} catch (IllegalAccessException ie) {
					System.out.println(ie);
				} catch (InvocationTargetException it) {
					System.out.println(it);
				}
				return ret;
			}
		});
	}
	
	public static void main(String[] args) {
		List<SelfTestAnalysis> list = new ArrayList<SelfTestAnalysis>();
		SelfTestAnalysis st1 = new SelfTestAnalysis();
		st1.setStatus("OK");
		st1.setPlateNumber("车牌");
		st1.setForSort(2);
		list.add(st1);
		
		SelfTestAnalysis st2 = new SelfTestAnalysis();
		st2.setStatus("NG");
		st1.setPlateNumber("车牌");
		st2.setForSort(3);
		list.add(st2);
		
		SelfTestAnalysis st3 = new SelfTestAnalysis();
		st3.setStatus("OFF");
		st1.setPlateNumber("车牌");
		st3.setForSort(1);
		list.add(st3);
		
		SelfTestAnalysis st4 = new SelfTestAnalysis();
		st4.setStatus("OFF");
		st1.setPlateNumber("车牌");
		st4.setForSort(1);
		list.add(st4);
		
		System.out.println("默认排序");
		for(SelfTestAnalysis test : list){
			System.out.println(test.toString());
		}
		System.out.println();
		
        SortList<SelfTestAnalysis> sort = new SortList<SelfTestAnalysis>();

        System.out.println("getNum的desc排序");
        sort.Sort(list, "getForSort", "desc");
        for(SelfTestAnalysis test : list){
			System.out.println(test.toString());
		}
        
        System.out.println();
        
        System.out.println("getNum的asc排序");
        sort.Sort(list, "getStatus", null);
        for(SelfTestAnalysis test : list){
			System.out.println(test.toString());
		}
	}
}

泛型集合排序，根据实体类对象的某个属性排序

标签：泛型集合排序   根据集合中实体类的某个属性值排序   属性排序   

原文地址：http://blog.csdn.net/boybruce/article/details/47293679