以自己在开发引入的BUG为例
1.对一个列表中的元素用,来分隔:
public static String splitListByComma(List<String> dogs) { StringBuilder stringBuilder = new StringBuilder(); for (String dogName : dogs) { stringBuilder.append(dogName).append(","); } return stringBuilder.substring(0, stringBuilder.length() - 1); }
BUG:当dogs为空列表时,最后一句会报越界错误(不考虑传入null的情况)。
修正后应该是
public static String splitListByComma(List<String> dogs) { if (dogs.isEmpty()) { return ""; } StringBuilder stringBuilder = new StringBuilder(); for (String dogName : dogs) { stringBuilder.append(dogName).append(","); } return stringBuilder.substring(0, stringBuilder.length() - 1); }
时间: 2024-11-01 04:32:03