本文节选自 《Netkiller Spring Cloud 手札》

Netkiller Spring Cloud 手札

Spring Cloud Cookbook

Mr. Neo Chan, 陈景峯(BG7NYT)

中国广东省深圳市望海路半岛城邦三期
518067
+86 13113668890

<netkiller@msn.com>

$Id: book.xml 606 2013-05-29 09:52:58Z netkiller $

版权 © 2015-2018 Neo Chan

版权声明

转载请与作者联系，转载时请务必标明文章原始出处和作者信息及本声明。

http://www.netkiller.cn http://netkiller.github.io http://netkiller.sourceforge.net

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2017-11

我的系列文档

编程语言

5.2.4. mongoTemplate

导入与模板相关的包

import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;

注入 MongoTemplate 对象

@Autowired
	private MongoTemplate mongoTemplate;

5.2.4.1. Save 保存

User user = new User();
user.setName("Netkiller"); 
mongoTemplate.save(user, "user");

更新数据

user = mongoTemplate.findOne(Query.query(Criteria.where("name").is("Jam")), User.class);
user.setName("Neo");
mongoTemplate.save(user, "user");

5.2.4.2. Insert

User user = new User();
user.setName("Neo");
mongoTemplate.insert(user, "user");

BSONObject personBsonObj = BasicDBObjectBuilder.start()
                .add("name","Neo Chen")
                .add("age",27)
                .add("address",null).get();

mongoTemplate.insert(personBsonObj,"personCollection");

document in the db:

db.personCollection.findOne().pretty();
{"age":21,"name":"John Doe";"address":null}*

5.2.4.3. 更新第一条

Query query = new Query();
query.addCriteria(Criteria.where("name").is("Neo"));
Update update = new Update();
update.set("name", "Netkiller");
mongoTemplate.updateFirst(query, update, User.class);

5.2.4.4. 更新所有数据

Query query = new Query();
query.addCriteria(Criteria.where("name").is("Neo"));
Update update = new Update();
update.set("name", "Jerry");
mongoTemplate.updateMulti(query, update, User.class);

5.2.4.5. 查找并保存

Query query = new Query();
query.addCriteria(Criteria.where("name").is("Luck"));
Update update = new Update();
update.set("name", "Lisa");
User user = mongoTemplate.findAndModify(query, update, User.class);

5.2.4.6. upsert

Query query = new Query();
query.addCriteria(Criteria.where("name").is("Green"));
Update update = new Update();
update.set("name", "Tom");
mongoTemplate.upsert(query, update, User.class);

5.2.4.7. 删除

User user = new User();
user.setId("5bbf091efd9557069c4a25c5")			
mongoTemplate.remove(user, "user");

5.2.4.8. 查找一条数据

public Person findOneByName(String name) {
   Query query = new Query();
   query.addCriteria(Criteria.where("name").is(name));
   return mongoTemplate.findOne(query, Person.class);
}

5.2.4.9. 查找所有数据

public List<Person> findByName(String name) {
   Query query = new Query();
   query.addCriteria(Criteria.where("name").is(name));
   return mongoTemplate.find(query, Person.class);
}

5.2.4.10. Query

5.2.4.10.1. 翻页

public List<Person> getAllPersonPaginated(int pageNumber, int pageSize) {
   Query query = new Query();
   query.skip(pageNumber * pageSize);
   query.limit(pageSize);
   return mongoTemplate.find(query, Person.class);
}

5.2.4.10.2. between

实现一个区间条件 new Criteria("createdDate").gte(beginDate).lte(endDate)

public boolean AccountDeposit(Date beginDate, Date endDate) {

		MatchOperation matchOperation = match(new Criteria("createdDate").gte(beginDate).lte(endDate));
		GroupOperation groupOperation = group("loginname").sum("amount").as("amount");
		SortOperation sortOperation = sort(new Sort(Direction.ASC, "loginname"));

		Aggregation aggregation = newAggregation(matchOperation, groupOperation, sortOperation);
		AggregationResults<AccountSettlementDetails> results = mongoTemplate.aggregate(aggregation, AccountSettlementDetails.class, AccountSettlementDetails.class);

		if (results.getMappedResults() != null) {
			log.info(results.getRawResults().get("result").toString());
			for (AccountSettlementDetails settlementDetails : results.getMappedResults()) {
							
				log.info("{}", settlementDetails.toString());
				
			}
		}
		return true;
	}

5.2.4.11. Criteria

5.2.4.11.1. is

Query query = new Query();
query.addCriteria(Criteria.where("name").is("Neo"));
List<User> users = mongoTemplate.find(query, User.class);

5.2.4.11.2. Regex 正则表达式搜索

查询以N开头的名字

Query query = new Query();
query.addCriteria(Criteria.where("name").regex("^N"));
List<User> users = mongoTemplate.find(query,User.class);

查询以o结尾的名字

Query query = new Query();
query.addCriteria(Criteria.where("name").regex("o$"));
List<User> users = mongoTemplate.find(query, User.class);

5.2.4.11.3. lt 和 gt

查询年龄小于 < 30 并 > 20 的用户

Query query = new Query();
query.addCriteria(Criteria.where("age").lt(30).gt(20));
List<User> users = mongoTemplate.find(query,User.class);

查找日期范围

Date start = DateUtil.convertStringToDateTime("2014-02-10 20:38:44");
Date end = DateUtil.convertStringToDateTime("2014-02-10 20:38:50");
					
Query query = new Query();
Criteria criteria = Criteria.where("delflag").is(false);
criteria.and("modifyDate").gte(start).lte(end);
query.addCriteria(criteria);
query.limit(10);

5.2.4.11.4. 

<programlisting>
			<![CDATA[
Query query = new Query();
query.addCriteria(
    new Criteria().andOperator(
        Criteria.where("field1").exists(true),
        Criteria.where("field1").ne(false)
    )
);

List<Foo> result = mongoTemplate.find(query, Foo.class);
System.out.println("query - " + query.toString());

for (Foo foo : result) {
    System.out.println("result - " + foo);
}

5.2.4.11.5. 包含

public List<Person> findByFavoriteBooks(String favoriteBook) {
   Query query = new Query();
   query.addCriteria(Criteria.where("favoriteBooks").in(favoriteBook));
   return mongoTemplate.find(query, Person.class);
}

5.2.4.12. Update

5.2.4.12.1. set

Update update = new Update();
update.set("name", "Netkiller");

5.2.4.12.2. 追加数据

Query query = Query.query(Criteria.where("id").is("5bbf091efd9557069c4a25c5"));
	Update update = new Update().push("author", new Author("neo", "chen"));
	mongoTemplate.updateFirst(query, update, Article.class);

5.2.4.12.3. 更新数据

Query query = Query.query(Criteria.where("classId").is("1").and("Students.studentId").is("1"));
    Update update = Update.update("Students.$.name", "lisa");
    mongoTemplate.upsert(query, update, "class");

5.2.4.12.4. 删除数据

Query query = Query.query(Criteria.where("classId").is("1").and("Students.studentId").is("3"));
	Update update = new Update();
	update.unset("Students.$");
	mongoTemplate.updateFirst(query, update, "class");

5.2.4.12.5. inc

public void updateMultiplePersonAge() {
   Query query = new Query();
   Update update = new Update().inc("age", 1);
   mongoTemplate.findAndModify(query, update, Person.class);;
}

5.2.4.12.6. update.addToSet

Query query = Query.query(Criteria.where("classId").is("1"));
Student student = new Student("1", "lisa", 3, "girl");
Update update = new Update();
update.addToSet("Students", student);
mongoTemplate.upsert(query, update, "class");

5.2.4.13. Sort

按照年龄排序

Query query = new Query();
query.with(new Sort(Sort.Direction.ASC, "age"));
List<User> users = mongoTemplate.find(query,User.class);

5.2.4.14. Query + PageRequest

final Pageable pageableRequest = new PageRequest(0, 2);
Query query = new Query();
query.with(pageableRequest);

5.2.4.15. newAggregation

MultilevelDirectSellingAccountRewardsSettlementDetails multilevelDirectSellingAccountRewardsSettlementDetails = new MultilevelDirectSellingAccountRewardsSettlementDetails();
		multilevelDirectSellingAccountRewardsSettlementDetails.setLoginname("111");
		multilevelDirectSellingAccountRewardsSettlementDetails.setPhone("111");
		multilevelDirectSellingAccountRewardsSettlementDetails.setRecommenderLoginname("111");
		multilevelDirectSellingAccountRewardsSettlementDetails.setRecommenderPhone("111");
		multilevelDirectSellingAccountRewardsSettlementDetails.setRecommenderName("Neo");
		multilevelDirectSellingAccountRewardsSettlementDetails.setRecommenderType("客户");
		multilevelDirectSellingAccountRewardsSettlementDetails.setAmount(5.02);
		multilevelDirectSellingAccountRewardsSettlementDetails.setCreatedDate(new Date());
		multilevelDirectSellingAccountRewardsSettlementDetailsRepository.save(multilevelDirectSellingAccountRewardsSettlementDetails);
		
		Date beginDate = this.getToday("00:00:00");
		Date endDate = this.getToday("23:59:59");
		log.info(beginDate.toString() + " ~ " + endDate.toString());
		
		GroupOperation groupOperation = group("loginname").sum("amount").as("amount");
		MatchOperation matchOperation = match(new Criteria("createdDate").gte(beginDate).lte(endDate));
		SortOperation sortOperation = sort(new Sort(Direction.ASC, "loginname"));

		Aggregation aggregation = newAggregation(matchOperation, groupOperation, sortOperation);
		AggregationResults<MultilevelDirectSellingAccountRewardsSettlementDetails> results = mongoTemplate.aggregate(aggregation, MultilevelDirectSellingAccountRewardsSettlementDetails.class, MultilevelDirectSellingAccountRewardsSettlementDetails.class);		
		System.out.println(results.getRawResults().get("result").toString());

5.2.4.16. 创建索引

mongoOps.indexOps(User.class).ensureIndex(new Index().on("name", Direction.ASC));

5.2.4.17. 子对象操作

5.2.4.17.1. List 类型

package cn.netkiller.api.domain;

import java.util.List;

import javax.persistence.Id;
import org.springframework.data.mongodb.core.mapping.Document;

@Document
public class Article {

	@Id
	private String id;
	private String title;
	private String description;

	List<Author> author;
	public static class Author {
		private String id;
		private String firstname;
		private String lastname;

		public Author(String firstname, String lastname) {
			this.firstname = firstname;
			this.lastname = lastname;
		}
	}
}

更新

db.getCollection('foo').update({"author.firstname":"neo"},{"$set":{"author.$.firstname":"netkiller"}})

更新数据

Query query = Query.query(Criteria.where("author.firstname").is("neo"));
	Update update = new Update().set("author.$.firstname", "netkiller");
	mongoTemplate.updateFirst(query, update, Article.class);

追加数据

Query query = Query.query(Criteria.where("id").is("5bbf091efd9557069c4a25c5"));
	Update update = new Update().push("author", new Author("neo", "chen"));
	mongoTemplate.updateFirst(query, update, Article.class);

删除数据

Query query = Query.query(Criteria.where("id").is("5bbf091efd9557069c4a25c5"));
		Update update = new Update().pull("author", new Author("jerry", "lee"));
		mongoTemplate.updateFirst(query, update, Article.class);