static void convertArray2List() {

         String[] strs = new String[]{"hehe","haha","heihei"};

         List<String> list = Arrays.asList(strs);

         System.out.println(JSON.toJSONString(list));

     }

结果 ： ["hehe","haha","heihei"]

 　　static void convertList2Array() {

         List<String> list = new ArrayList<String>();

         list.add("hehe");

         list.add("haha");

         list.add("heihei");

         String[] strs =  list.toArray(new String[]{});

         System.out.println(JSON.toJSONString(strs));

     }

结果 ：["hehe","haha","heihei"]