Java8将list转换为逗号隔开的字符串

/**
 * @Description: 把list转换为逗号分隔的字符串
 *
 * @param list
 * @Return: java.lang.String
 * @Author: XXX
 * @Date: 2018/11/15
 */
public static String listToString(List<String> list) {
	StringBuilder sb = new StringBuilder();
	if (list != null && list.size() > 0) {
        //Lambda表达式
		return list.stream().collect(Collectors.joining(","));
	}else {
		return "";
	}
}