java工具类（比如一个key对应value）

private static final String car = "wgc:未购车,ygc:已购车,dwc:单位用车";

public static  Map<String, String> carmap =Constants.getAllToMap(car);

/**

* 
* Description : 这个方法用于,某些状态不是在字典指定,而且可能以后增加
* 设置keys(不会相同)和vals,就能得到一一对应的键值对.只需在service设置两个常量,
* 以后修改这两个常量就可以在所有地方增加字段
* @param keys
* @param vals
* @return
* @throws Exception
* Map<String,Object>
* @throws     
* 
*/
public static  Map<String, String> getAllToMap(String [] keys,String [] vals ){
Map<String, String> map = new TreeMap<String, String>();
for (int i = 0; i < vals.length; i++) {
map.put(keys[i], vals[i]);
}
return map;  
}
/**
* 
* Description : 和上面方法效果一样,只需要像这样设置:"1:电话,2:微信,3:客户端,4:其他"
* @param str
* @return
* Map<String,String>
* @throws     
* 
*/
public static  Map<String, String> getAllToMap(String str){
Map<String, String> map = new TreeMap<String, String>();
String[] keyvals =str.split(",");
for (int i = 0; i < keyvals.length; i++) {
String[] keyval = keyvals[i].split(":");
map.put(keyval[0], keyval[1]);
}
return map;  
}

/**
* 
* Description : 和上面方法效果一样,只需要像这样设置:"1:电话,2:微信,3:客户端,4:其他"
* @param str
* @return
* Map<String,String>
* @throws     
* 
*/
public static  Map<String, String> getAllToMapNotOrder(String str){
Map<String, String> map = new HashMap<String, String>();
String[] keyvals =str.split(",");
for (int i = 0; i < keyvals.length; i++) {
String[] keyval = keyvals[i].split(":");
map.put(keyval[0], keyval[1]);
}
return map;  
}

/**
* 
* Description : 从map中获取需要keys的值，但不修改原来map的值
* @param str 例如 1,2,3
* @param originmap 从map中取得值
* @return
* Map<String,String>
* @throws     
* 
*/
public static  Map<String, String> getMapByKeys(String str,Map<String, String> originmap){
Map<String, String> map = new TreeMap<String, String>();
String[] keyvals =str.split(",");
for (String key : keyvals) {
map.put(key, originmap.get(key));
}
return map;  
}

public static Comparator getComparator(){
return new Comparator() {
         public int compare(Object o1, Object o2) {
             if (o1 == null || o2 == null)  return 0; 
             Collator collator = Collator.getInstance();      
             CollationKey ck1 = collator.getCollationKey(String.valueOf(o1).toLowerCase());
             CollationKey ck2 = collator.getCollationKey(String.valueOf(o2).toLowerCase());
             return ck1.compareTo(ck2);              
         }
     };
     //Collections.sort(map, aa());
}

/**
* 
* Description : 通过参数间隔获取map
* @param objects
* @return
* Map<String,Object>
* @throws     
* 
*/
public static Map<String, Object> getMap(Object... objects) {
Map<String, Object> map = new HashMap<String, Object>();
int length = objects.length;
if(length>0&&length%2==0){
for(int i=0;i<length;i+=2){
map.put(objects[i].toString(), objects[i+1]);
}
}
return map;
}

public static void main(String[] args) throws Exception {
String [] keys ={"2","1","3"};
String [] vals ={"11","22","33"};
Map<String, String> map = getAllToMap(keys, vals);
System.out.println(map.get("1"));;
System.out.println(map.get(new String("1")));;
System.out.println(map);

String sources = "2:电话,1:微信,3:客户端,4:其他";
System.out.println(getAllToMap(sources));

}