通用排序工具类

1,实际应用:

List<OrderInfoBean> orderInfoBeans = commitOrderDto.getValue();
		SortList<OrderInfoBean> sortList = new SortList<OrderInfoBean>();
		sortList.Sort(orderInfoBeans, "getCreateTime", "desc");

 

2,工具类sortList源码

package com.gov.util;

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

/***
 * 用户排序
 * @author huangwei
 * 2015年7月1日
 * @param <E>
 */
public class SortList<E> {
    public void Sort(List<E> list, final String method, final String sort) {
        Collections.sort(list, new Comparator() {
            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;
            }
        });
    }
}