Map按照Value排序（升序，降序）--string

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public class mapValueSort {
	public static void main(String[] args) {
        HashMap<String,String> map = new HashMap<String,String>();  
        map.put("19","1");  
        map.put("12","99");  
        map.put("11","22");  
        map.put("99","4");  
        
        map = (HashMap<String, String>) sortMapByValueDesc(map) ;//key降序
        System.out.println("map按照value倒序排序开始=========");
        for(Map.Entry<String, String> maps : map.entrySet()){
        	System.out.println(maps.getKey() +"=" +maps.getValue());
        }
        
        map = (HashMap<String, String>) sortMapByValueAsc(map) ;//key升序
        System.out.println("map按照value升序排序开始=========");
        for(Map.Entry<String, String> maps : map.entrySet()){
        	System.out.println(maps.getKey() +"=" +maps.getValue());
        }
	}
	//降序
		public static  Map<String, String> sortMapByValueDesc(Map<String, String> oriMap) {  
			Map<String, String> sortedMap = new LinkedHashMap<String, String>();  
			try {
				if (oriMap != null && !oriMap.isEmpty()) {  
			        List<Map.Entry<String, String>> entryList = new ArrayList<Map.Entry<String, String>>(oriMap.entrySet());  
			        Collections.sort(entryList,  
			                new Comparator<Map.Entry<String, String>>() {  
			                    public int compare(Entry<String, String> entry1,  
			                            Entry<String, String> entry2) {  
			                        int value1 = 0, value2 = 0;  
			                        try {  
			                            value1 = Integer.parseInt(entry1.getValue());  
			                            value2 = Integer.parseInt(entry2.getValue());  
			                        } catch (NumberFormatException e) {  
			                            value1 = 0;  
			                            value2 = 0;  
			                        }  
			                        return value2 - value1;  
			                    }  
			                });  
			        Iterator<Map.Entry<String, String>> iter = entryList.iterator();  
			        Map.Entry<String, String> tmpEntry = null;  
			        while (iter.hasNext()) {  
			            tmpEntry = iter.next();  
			            sortedMap.put(tmpEntry.getKey(), tmpEntry.getValue());  
			        }  
			    }  
			} catch (Exception e) {
			}
		    return sortedMap;  
		} 
		
		//给map排序--值（升序，从小到大）  duliyuan
		public  static Map<String, String> sortMapByValueAsc(Map<String, String> oriMap) {  
			Map<String, String> sortedMap = new LinkedHashMap<String, String>();
			try {
				 if (oriMap != null && !oriMap.isEmpty()) {  
				        List<Map.Entry<String, String>> entryList = new ArrayList<Map.Entry<String, String>>(oriMap.entrySet());  
				        Collections.sort(entryList,  
				                new Comparator<Map.Entry<String, String>>() {  
				                    public int compare(Entry<String, String> entry2,  
				                            Entry<String, String> entry1) {  
				                        int value2 = 0, value1 = 0;  
				                        try {  
				                            value2 = Integer.parseInt(entry1.getValue());  
				                            value1 = Integer.parseInt(entry2.getValue());  
				                        } catch (NumberFormatException e) {  
				                            value2 = 0;  
				                            value1 = 0;  
				                        }  
				                        return value1 - value2;  
				                    }  
				                });  
				        Iterator<Map.Entry<String, String>> iter = entryList.iterator();  
				        Map.Entry<String, String> tmpEntry = null;  
				        while (iter.hasNext()) {  
				            tmpEntry = iter.next();  
				            sortedMap.put(tmpEntry.getKey(), tmpEntry.getValue());  
				        }  
				    }
			} catch (Exception e) {
			}
		    return sortedMap;  
		}
}

排序结果：

map按照value倒序排序开始=========
12=99
11=22
99=4
19=1
map按照value升序排序开始=========
19=1
99=4
11=22
12=99

Collections.sort只支持String，String的类型