List转字符串，通过逗号(，)分割

list转，分割字符串

/**
 * list转，分割字符串
 *
 * @param values
 * @return
 */
public static String listToString(List<String> values) {
    if (CollectionUtils.isEmpty(values)) {
        return "";
    }
    StringBuilder builder = new StringBuilder();
    for (String value : values) {
        builder.append(value).append(COMMA);
    }
    return builder.deleteCharAt(builder.length() - 1).toString();
}