开发报错记录

项目上一直报了个空指针，但是我就是看不出来到底哪报错了，感觉处处排空了，报错位置在倒数第二行的jdyInfos.stream()处，Service代码如下，后来发现是jdyInfos这个list中有空的Object对象，后来对jdyInfos的Object对象做了判空处理

 public List<String> getRequireBu() {
        List<RequirementInfo> requirementInfos = this.list(Wrappers.lambdaQuery(RequirementInfo.class).select(RequirementInfo::getRequireNo)
                .orderByDesc(RequirementInfo::getCreateTime));
        List<String> requireNos = requirementInfos.stream().map(RequirementInfo::getRequireNo).filter(ele->StringUtil.isNotBlank(ele)).distinct().collect(Collectors.toList());
        List<JdyInfo> jdyInfos = jdyInfoService.list(Wrappers.lambdaQuery(JdyInfo.class).select(JdyInfo::getSecondaryDept)
                .in(JdyInfo::getRequireNo, requireNos).orderByDesc(JdyInfo::getUpdateTime));
        List<String> list = jdyInfos.stream().map(JdyInfo::getSecondaryDept).filter(ele -> ele != null && StringUtil.isNotBlank(ele)).distinct().collect(Collectors.toList());//报错前
      //  List<String> list = jdyInfos.stream().filter(ele->ele != null).map(JdyInfo::getSecondaryDept).filter(ele -> ele != null && StringUtil.isNotBlank(ele)).distinct().collect(Collectors.toList());   //过滤空对象后，不报错了

        return list;
    }