Java下String逗号数组和List<String>的互相转换

说明：很遗憾，组装的时候只能遍历。

方法：

public static String listToString(List<String> list){
      if(list==null){
      return null;
   }
   StringBuilder result = new StringBuilder();
   boolean first = true;
   //第一个前面不拼接","
   for(String string :list) {
      if(first) {
         first=false;
      }else{
         result.append(",");
      }
      result.append(string);
   }
   return result.toString();
}

public static List<String> stringToList(String strs){
    String str[] = strs.split(",");
    return Arrays.asList(str);
}

参考：

http://blog.csdn.net/shareye1992/article/details/50036615