MongoTemplate进行增删改查

 

1.首先pom.xml

    
	    org.springframework.boot
	    spring-boot-starter-data-mongodb
	    2.0.0.RELEASE
   

引入

@Autowired
private MongoTemplate mongoTemplate;

 

插入数据（可以是一个对象，或者是一个对象集合）

List userList = new ArrayList<>();
userList.add(new SysUser(11,"1","白小飞","18888888888"));
userList.add(new SysUser(9,"1","白敬亭","13333333333"));
userList.add(new SysUser(5,"1","林宥嘉","14444444444"));
userList.add(new SysUser(6,"1","彭于晏","15555555555"));
userList.add(new SysUser(7,"1","周杰伦","16666666666"));
mongoTemplate.insert(userList, "userList");

SysUser sysUser = new SysUser(12,"1","黄小飞","18888888888");
mongoTemplate.insert(sysUser, "userList");

当存入的第一个数据类型是SysUser，名字是userList的时候，第二个存入数据就必须是SysUser类型的数据。

 

查询数据

查询单个数据和多个数据，模糊查询

//查询单个数据
	public SysUser findMongo() {
		Pattern pattern = Pattern.compile("^.*8$",Pattern.CASE_INSENSITIVE);
		Query query = new Query(Criteria.where("phone").regex(pattern));
		SysUser findOne = mongoTemplate.findOne(query,SysUser.class,"userList");
		return findOne;
	}

	//查询多个数据
	public List findListMongo() {
		//模糊查询以 ^开始 以$结束 .*相当于Mysql中的%
		Pattern pattern = Pattern.compile("^1.*$",Pattern.CASE_INSENSITIVE);
		Query query = new Query(Criteria.where("phone").regex(pattern));
//		Query query = new Query(Criteria.where("status").is("1"));
//		query.with(new Sort(Direction.DESC,"phone"));  //按手机号码倒序
		 List findList = mongoTemplate.find(query,SysUser.class,"userList");
		return findList;
	}

多个条件查询

//多个条件查询(格式1)
	public List findList(){
		Query query = new Query();
		query.addCriteria(Criteria.where("name").is("秦岚"));
		query.addCriteria(Criteria.where("phone").is("12222222222"));
		List findList = mongoTemplate.find(query, SysUser.class,"userList");
		return findList;
	}

 

//多个条件查询(格式2)
public List findList2(){
	Criteria criteria = new Criteria();
	criteria.and("name").is("秦岚");
	criteria.and("phone").is("12222222222");
	Query query = new Query(criteria);
	List findList = mongoTemplate.find(query, SysUser.class,"userList");
	return findList;
}
		

//一个模糊关键字匹配多个字段
	public List findList3(){
			
		Pattern pattern = Pattern.compile("^.*222$",Pattern.CASE_INSENSITIVE);
		Criteria  criteria = new Criteria();
		//phone以222结尾的 或者 name以222结尾的  
		criteria.orOperator(Criteria.where("phone").regex(pattern),
		Criteria.where("name").regex(pattern));
		//同时满足 phone以222结尾的，和name以222结尾的
	   criteria.andOperator(Criteria.where("phone").regex(pattern),
		Criteria.where("name").regex(pattern));
			
		Query query = new Query(criteria);
		List find = mongoTemplate.find(query, SysUser.class,"userList");
		return find;
	}

 

更新。

//更新
public int update() {
	Query query = new Query(); 
	query.addCriteria(Criteria.where("_id").is(1));  //_id区分引号 "1"和1
	Update update = Update.update("name", "zzzzz");
//	WriteResult upsert = mongoTemplate.updateMulti(query, update, "userList"); //查询到的全部更新
//	WriteResult upsert = mongoTemplate.updateFirst(query, update, "userList"); //查询更新第一条
	WriteResult upsert = mongoTemplate.upsert(query, update, "userList");      //有则更新，没有则新增
	return upsert.getN();       //返回执行的条数
	}

//添加内嵌文档数据（有则直接加入，没有则进行新增）
	public int update1() {
		Query query = Query.query(Criteria.where("_id").is("11"));
		SysUser user = new SysUser(1,"1","lisi","19999998745");
		Update update = new Update();
		update.addToSet("users", user);
		WriteResult upsert = mongoTemplate.upsert(query, update, "userList");
		return upsert.getN();
	}

//修改内嵌文档中数据
public int update2() {
	//查询_id为11并且其中userList文档的_id为1的
	Query query = Query.query(Criteria.where("_id").is("11").and("users._id").is(1));
	Update update = Update.update("users.$.name", "zhangsan");
	WriteResult upsert = mongoTemplate.upsert(query, update, "userList");
	return upsert.getN();
}

//删除内嵌文档中数据
	public int delete() {
	//查询_id为11并且其中userList文档的_id为1的
	Query query = Query.query(Criteria.where("_id").is("11").and("users._id").is(1));
	Update update = new Update();
	update.unset("users.$");
	WriteResult upsert = mongoTemplate.updateFirst(query, update, "userList");
	return upsert.getN();
}

查询多个数据删除之后是这样婶的：