Java异常与调优一站式解决方案

V: ititit111222333

public void validateUserFollow(UserFollowParam param) {
    Integer followId = param.getFollowId();
    if (followId == null || followId < 0) {
        throw new ParamsValidateException(UserResultCode.USER_ID_NULL);
    }
    User userFollow = userManager.getUserCacheById(followId);
    if (userFollow == null) {
        throw new ParamsValidateException(UserResultCode.USER_ID_NULL);
    }
}