Java點滴:Map與String的轉換公用方法__Java

一個簡單的Map與String的轉換方法,比較實用的一段java代碼

1）將Map轉成形如username’chenziwen^password’1234的字串

/** * 方法名稱:transMapToString * 傳入參數:map * 傳回值:String 形如 username'chenziwen^password'1234*/public static String transMapToString(Map map){  java.util.Map.Entry entry;  StringBuffer sb = new StringBuffer();  for(Iterator iterator = map.entrySet().iterator(); iterator.hasNext();)  {    entry = (java.util.Map.Entry)iterator.next();      sb.append(entry.getKey().toString()).append( "'" ).append(null==entry.getValue()?"":      entry.getValue().toString()).append (iterator.hasNext() ? "^" : "");  }  return sb.toString();}

2）將形如形如username’chenziwen^password’1234的字串轉成Map

/** * 方法名稱:transStringToMap * 傳入參數:mapString 形如 username'chenziwen^password'1234 * 傳回值:Map*/public static Map transStringToMap(String mapString){  Map map = new HashMap();  java.util.StringTokenizer items;  for(StringTokenizer entrys = new StringTokenizer(mapString, "^");entrys.hasMoreTokens();     map.put(items.nextToken(), items.hasMoreTokens() ? ((Object) (items.nextToken())) : null))      items = new StringTokenizer(entrys.nextToken(), "'");  return map;}