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

 

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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

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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);