springMVC操作mongoDB增删改查

public class NewsHelpService {
       
    @Resource
    private MongoTemplate mongoTemplate;
   
//add
    public void insert(NewsHelp newsHelp) {

        mongoTemplate.insert(newsHelp);
        
    }

//select
    public Pagination<NewsHelp> findNewsHelpAll(String type, String title, String id, Integer pageNo,
            Integer pageSize) {
        
//        QueryPage page = QueryPage.build(pageNo, pageSize);
        MandoAssert.notNull(type, "类型不能为空");
       
        Criteria criteria = Criteria.where("type").is(type);
        if (title!=null) {
            Pattern pattern = Pattern.compile(title, Pattern.CASE_INSENSITIVE); //模糊查询
            criteria.andOperator(Criteria.where("title").regex(pattern));
        }
        if (id!=null) {
            criteria.andOperator(Criteria.where("id").is(id));
        }
        Query query = BasicQuery.query(criteria);
        
        long total = mongoTemplate.count(query, NewsHelp.class);
        Pagination<NewsHelp> newsHelps = new Pagination<NewsHelp>(pageNo, pageSize);
        
        int skip = (pageNo-1)*pageSize;
        if (pageSize<1) {
            query.skip(skip);// skip相当于从那条记录开始
            query.limit(pageSize);// 从skip开始,取多少条记录
        }
        List<NewsHelp> datas = mongoTemplate.find(query, NewsHelp.class);
         
        newsHelps.setData(datas);//获取数据    
        
        newsHelps.setTotal((int)total);
        
        return newsHelps;
    }

//selectOne
    public NewsHelp findNewsHelp(String id) {
        
        Query query = BasicQuery.query(Criteria.where("id").is(id));
        
        NewsHelp newsHelp = mongoTemplate.findOne(query, NewsHelp.class);
        return newsHelp;
    }

    // update 新闻类
    public void updateNewsHelp(NewsHelp help) { 
        MandoAssert.notNull(help.getId(), "ID不能为空");
        Update update = new Update();
        
        if(null!=help.getTops()){
            update.set("tops", help.getTops());
        }
        if(StringUtils.isNotEmpty(help.getTitle())){
            update.set("title", help.getTitle());
        }
        if(StringUtils.isNotEmpty(help.getContent())){
            update.set("content", help.getContent());
        }
        update.set("modifyDate", new Date());
        
        mongoTemplate.updateMulti(Query.query(Criteria.where("id").is(help.getId())),update,NewsHelp.class);
        
    }

 //delete
    public void delNewsHelp(List<String> ids) {

        ids.stream().forEach(id -> {
            Query query = BasicQuery.query(Criteria.where("id").is(id));

            mongoTemplate.findAndRemove(query, NewsHelp.class);
        });
    }

}