package com.fh.util; import java.util.ArrayList;import java.util.Collections;import java.util.Comparator;import java.util.HashMap;import java.util.List;import java.util.Map; 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 SortUtil {    public static void main(String[] args) {        System.out.println(testMapSort());    }         /**     * 对list进行排序     * @param sortList 需要排序的list     * @param param1   排序的参数名称     * @param orderType 排序类型：正序-asc；倒序-desc       */    public static List sort(List sortList, String param1, String orderType){        Comparator mycmp1 = ComparableComparator.getInstance ();        if("desc".equals(orderType)){            mycmp1 = ComparatorUtils. reversedComparator(mycmp1); //逆序（默认为正序）        }                 ArrayList<Object> sortFields = new ArrayList<Object>();        sortFields.add( new BeanComparator(param1 , mycmp1)); //主排序（第一排序）         ComparatorChain multiSort = new ComparatorChain(sortFields);        Collections.sort (sortList , multiSort);                 return sortList;    }         /**     * 对list进行排序     * @param sortList 需要排序的list     * @param param1   排序的参数名称:参数长度     * @param param2   排序的参数名称:排序参数     * @param orderType 排序类型：正序-asc；倒序-desc       */    public static List sortParam2(List sortList, String param1,String param2, String orderType){        Comparator mycmp1 = ComparableComparator.getInstance ();        Comparator mycmp2 = ComparableComparator.getInstance ();        if("desc".equals(orderType)){            mycmp1 = ComparatorUtils. reversedComparator(mycmp1); //逆序（默认为正序）        }                 ArrayList<Object> sortFields = new ArrayList<Object>();        sortFields.add( new BeanComparator(param1 , mycmp1)); //主排序（第一排序）        sortFields.add( new BeanComparator(param2 , mycmp2)); //主排序（第一排序）         ComparatorChain multiSort = new ComparatorChain(sortFields);        Collections.sort (sortList , multiSort);                 return sortList;    }         public static List testMapSort(){        List sortList = new ArrayList();                 Map map = new HashMap();        map.put("name", "1");        map.put("age", "1");                 Map map2 = new HashMap();        map2.put("name", "2");        map2.put("age", "13");                 Map map1 = new HashMap();        map1.put("name", "2");        map1.put("age", "12");                 List list = new ArrayList();        list.add(map);        list.add(map1);        list.add(map2);                 //return sort(list, "age", "asc");        return sortParam2(list, "name", "age", "asc");    }     }