java用poi往excel里写数据遇到换行问题答:String[] arr = new String[] { "a", "b", "c", "d", "a", "b", "c", "d", "a", "b", "c", "d" };List<String> list = Arrays.asList(arr);if (list != null) { StringBuffer buff = new StringBuffer();int colIndex = 0;// 用来标识列下标 for (int i ...