JSON数组转为逗号分割字符串

@Slf4j
public class test {
    public static void main(String[] args) {
        String json = "["偏好零售","偏好金融","偏好教育"]";
        JSONArray objects = JSONArray.parseArray(json);
        StringBuilder sb = new StringBuilder();
        for (Object object : objects) {
            sb.append(object + ",");
        }
        sb = sb.delete(sb.length() - 1, sb.length());
        System.out.println(sb);
    }
}

最后得到

偏好零售,偏好金融,偏好教育