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spring-data-mongodb使用示例

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内容图文

一：引入所需要的依赖

<groupId>org.mongodb</groupId>

<artifactId>mongo-java-driver</artifactId>

</dependency>

<groupId>org.springframework.data</groupId>

<artifactId>spring-data-mongodb</artifactId>

<version>1.9.4.RELEASE</version>

</dependency>

二：mongodb与Spring集成

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"

xmlns:mongo="http://www.springframework.org/schema/data/mongo"

xsi:schemaLocation="http://www.springframework.org/schema/context

http://www.springframework.org/schema/context/spring-context.xsd

http://www.springframework.org/schema/data/mongo

http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd

http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans.xsd">

<mongo:mongo id="mongo" host="127.0.0.1" port="27017">

</mongo:mongo>

<constructor-arg ref="mongo" />

<constructor-arg name="databaseName" value="mydb" />

</bean>

</beans>

三：测试

实体类：Member

package com.mengdee.manager.domain;

import java.io.Serializable;

public class Member implements Serializable {

private static final long serialVersionUID = 5157900066984701447L;

private Integer id;

private String username;

private String password;

private Integer sex;

private Integer age;

private String email;

public Member(Integer id, String username, String password, Integer sex, Integer age, String email) {

super();

this.id = id;

this.username = username;

this.password = password;

this.sex = sex;

this.age = age;

this.email = email;

}

// getter && setter

@Override

public String toString() {

return "Member [id=" + id + ", username=" + username + ", password=" + password + ", sex=" + sex + ", age="

+ age + ", email=" + email + "]";

}

MongoDBTest

package com.mengdee.manager.user;

import java.util.List;

import java.util.Set;

import java.util.regex.Pattern;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.data.domain.Sort;

import org.springframework.data.domain.Sort.Direction;

import org.springframework.data.mongodb.core.MongoTemplate;

import org.springframework.data.mongodb.core.mapreduce.GroupBy;

import org.springframework.data.mongodb.core.mapreduce.GroupByResults;

import org.springframework.data.mongodb.core.query.Criteria;

import org.springframework.data.mongodb.core.query.Query;

import org.springframework.test.context.ContextConfiguration;

import org.springframework.test.context.junit4.AbstractJUnit4SpringContextTests;

import org.springframework.test.context.junit4.SpringJUnit4Cla***unner;

import com.mengdee.manager.domain.Member;

import com.mongodb.BasicDBList;

import com.mongodb.BasicDBObject;

import com.mongodb.DB;

@ContextConfiguration(locations = {"classpath:conf/spring/spring-*.xml"})

@RunWith(SpringJUnit4Cla***unner.class)

public class MongoDBTest extends AbstractJUnit4SpringContextTests{

@Autowired

private MongoTemplate mongoTemplate;

@Before

public void tearUp(){

// 数据库

DB db = mongoTemplate.getDb();

System.out.println(db.getName());

// 获取所有集合

Set<String> collectionNames = mongoTemplate.getCollectionNames();

System.out.println(collectionNames);

for (String collectionName : collectionNames) {

long count = mongoTemplate.count(new Query(), Member.class);

System.out.println("total doc count:" + count);

if ("member".equals(collectionName)) {

// 获取指定的集合对应的文档

List<Member> members = mongoTemplate.findAll(Member.class, collectionName);

printMembers("findAll", members);

}

boolean collectionExists = mongoTemplate.collectionExists(Member.class);

System.out.println("member collection isExists:" + collectionExists);

if (collectionExists) {

// mongoTemplate.dropCollection(Member.class);

}

// 在保存集合时，如果集合不存在，集合的名字默认为实体类的名字，名字全部小写

// insert : 当_id 重复插入时会被忽略

// save：当_id值相同时就更新, 否则就插入（addOrUpdate）

@Test

public void testInsert(){

Member member1 = new Member(1, "mengdee1", "111111", 1, 15, "mengdee1@163.com");

mongoTemplate.insert(member1);

Member member11 = new Member(1, "mengdee11", "222222", 2, 20, "mengdee11@163.com");

mongoTemplate.insert(member11);

Member member111 = new Member(1, "mengdee111", "123456", 1, 17, "mengdee111@163.com");

mongoTemplate.save(member111);

Member member2 = new Member(2, "mengdee2", "123456", 1, 22, "mengdee2@163.com");

mongoTemplate.save(member2);

Member member3 = new Member(3, "vbirdbest1", "123456", 2, 25, "vbirdbest1@126.com");

mongoTemplate.save(member3);

Member member4 = new Member(4, "vbirdbest2", "666666", 1, 26, "vbirdbest2@126.com");

mongoTemplate.save(member4);

Member member5 = new Member(5, "mengday1", "666666", 2, 28, "mengday1@163.com");

mongoTemplate.save(member5);

Member member6 = new Member(6, "mengday2", "888888", 1, 31, "mengday2@163.com");

mongoTemplate.save(member6);

Member member7 = new Member(7, "大法师", "888888", 2, 33, "mengdee11@163.com");

mongoTemplate.save(member7);

Member member8 = new Member(8, "小法海", "123456", 1, 35, "mengdee11@163.com");

mongoTemplate.save(member8);

}

@Test

public void testFind() {

// findById

Member member = mongoTemplate.findById(5, Member.class);

System.out.println("findById: id=5: \n" + member);

// where is

Query query = new Query();

query.addCriteria(Criteria.where("id").is(7));

member = mongoTemplate.findOne(query, Member.class);

System.out.println("\nfindOne id is 7 \n" + member);

// 多条键查询 andOperator(相当于SQL中的 and并且)

Criteria andCriatira = new Criteria();

andCriatira.andOperator(Criteria.where("age").gte(31), Criteria.where("password").is("888888"));

List<Member> result = mongoTemplate.find(new Query(andCriatira), Member.class);

printMembers("where age >= 31 and password = 888888", result);

// or

Criteria orCriatira = new Criteria();

orCriatira.orOperator(Criteria.where("id").in(2, 3, 4, 5), Criteria.where("sex").is(1));

List<Member> result2 = mongoTemplate.find(new Query(orCriatira), Member.class);

printMembers("id in (2, 3, 4) or sex = 1", result2);

//*************************模糊查询 **************************

// 左匹配 LIKE 'mengday%'

Pattern pattern = Pattern.compile("^mengday.*$", Pattern.CASE_INSENSITIVE);

Query regexQuery = new Query(Criteria.where("username").regex(pattern));

List<Member> findList = mongoTemplate.find(regexQuery, Member.class);

printMembers("^mengday.*$", findList);

// 右匹配 LIKE '%@126.com'

pattern = Pattern.compile("^.*@126.com$", Pattern.CASE_INSENSITIVE);

regexQuery = new Query(Criteria.where("email").regex(pattern));

findList = mongoTemplate.find(regexQuery, Member.class);

printMembers("^.*@126.com$", findList);

// 模糊匹配 LIKE '%法%'

pattern = Pattern.compile("^.*法.*$", Pattern.CASE_INSENSITIVE);

regexQuery = new Query(Criteria.where("username").regex(pattern));

findList = mongoTemplate.find(regexQuery, Member.class);

printMembers("^.*法.*$", findList);

// 完全匹配 = 'mengdee111'

pattern = Pattern.compile("^mengdee111$", Pattern.CASE_INSENSITIVE);

regexQuery = new Query(Criteria.where("username").regex(pattern));

findList = mongoTemplate.find(regexQuery, Member.class);

printMembers("^mengdee111$", findList);

// 分页

int page = 1;

int pageSize = 5;

int offset = (page - 1) * pageSize;

query = new Query();

Sort sort = new Sort(Direction.DESC, "id");

query.with(sort).skip(offset).limit(pageSize);

List<Member> members = mongoTemplate.find(query, Member.class);

printMembers("page limit 0, 5", members);

// group

System.out.println("\nwhere age > 18 group by password");

GroupBy groupBy = GroupBy.key("password")

.initialDocument("{'sum':0, 'count':0}")

.reduceFunction("function (doc, prev){ prev.sum += doc.age; prev.count += 1; }");

GroupByResults<Member> groupResult = mongoTemplate.group(Criteria.where("age").gt(18), "member", groupBy, Member.class);

BasicDBList list = (BasicDBList)groupResult.getRawResults().get("retval");

for (int i = 0; i < list.size(); i++) {

BasicDBObject object = (BasicDBObject)list.get(i);

System.out.println(object);

}

@Test

public void testUpdate() {

List<Member> members = mongoTemplate.find(new Query(Criteria.where("id").in(1, 2, 3, 8)), Member.class);

printMembers("update befor\n", members);

Update update = new Update();

update.set("password", "abcdef");

update.inc("age", -1);

mongoTemplate.updateMulti(new Query(Criteria.where("id").in(1, 2, 3, 8)), update, Member.class);

members = mongoTemplate.find(new Query(Criteria.where("id").in(1, 2, 3, 8)), Member.class);

printMembers("update after\n", members);

}

private void printMembers(String tips, List<Member> findList) {

System.out.println("\n" + tips);

for (Member member : findList) {

System.out.println(member);

}

测试结果：

[member]

total doc count:8

findAll

Member [id=1, username=mengdee111, password=123456, sex=1, age=17, email=mengdee111@163.com]

Member [id=2, username=mengdee2, password=123456, sex=1, age=22, email=mengdee2@163.com]

Member [id=3, username=vbirdbest1, password=123456, sex=2, age=25, email=vbirdbest1@126.com]

Member [id=4, username=vbirdbest2, password=666666, sex=1, age=26, email=vbirdbest2@126.com]

Member [id=5, username=mengday1, password=666666, sex=2, age=28, email=mengday1@163.com]

Member [id=6, username=mengday2, password=888888, sex=1, age=31, email=mengday2@163.com]

Member [id=7, username=大法师, password=888888, sex=2, age=33, email=mengdee11@163.com]

Member [id=8, username=小法海, password=123456, sex=1, age=35, email=mengdee11@163.com]

member collection isExists:true

findById: id=5:

Member [id=5, username=mengday1, password=666666, sex=2, age=28, email=mengday1@163.com]

findOne id is 7

Member [id=7, username=大法师, password=888888, sex=2, age=33, email=mengdee11@163.com]

where age >= 31 and password = 888888

Member [id=6, username=mengday2, password=888888, sex=1, age=31, email=mengday2@163.com]

Member [id=7, username=大法师, password=888888, sex=2, age=33, email=mengdee11@163.com]

id in (2, 3, 4) or sex = 1

Member [id=1, username=mengdee111, password=123456, sex=1, age=17, email=mengdee111@163.com]

Member [id=2, username=mengdee2, password=123456, sex=1, age=22, email=mengdee2@163.com]

Member [id=3, username=vbirdbest1, password=123456, sex=2, age=25, email=vbirdbest1@126.com]

Member [id=4, username=vbirdbest2, password=666666, sex=1, age=26, email=vbirdbest2@126.com]

Member [id=5, username=mengday1, password=666666, sex=2, age=28, email=mengday1@163.com]

Member [id=6, username=mengday2, password=888888, sex=1, age=31, email=mengday2@163.com]

Member [id=8, username=小法海, password=123456, sex=1, age=35, email=mengdee11@163.com]

^mengday.*$

Member [id=5, username=mengday1, password=666666, sex=2, age=28, email=mengday1@163.com]

Member [id=6, username=mengday2, password=888888, sex=1, age=31, email=mengday2@163.com]

^.*@126.com$

Member [id=3, username=vbirdbest1, password=123456, sex=2, age=25, email=vbirdbest1@126.com]

Member [id=4, username=vbirdbest2, password=666666, sex=1, age=26, email=vbirdbest2@126.com]

^.*法.*$

Member [id=7, username=大法师, password=888888, sex=2, age=33, email=mengdee11@163.com]

Member [id=8, username=小法海, password=123456, sex=1, age=35, email=mengdee11@163.com]

^mengdee111$

Member [id=1, username=mengdee111, password=123456, sex=1, age=17, email=mengdee111@163.com]

page limit 0, 5

Member [id=8, username=小法海, password=123456, sex=1, age=35, email=mengdee11@163.com]

Member [id=7, username=大法师, password=888888, sex=2, age=33, email=mengdee11@163.com]

Member [id=6, username=mengday2, password=888888, sex=1, age=31, email=mengday2@163.com]

Member [id=5, username=mengday1, password=666666, sex=2, age=28, email=mengday1@163.com]

Member [id=4, username=vbirdbest2, password=666666, sex=1, age=26, email=vbirdbest2@126.com]

where age > 18 group by password

{ "password" : "123456" , "sum" : 82.0 , "count" : 3.0}

{ "password" : "666666" , "sum" : 54.0 , "count" : 2.0}

{ "password" : "888888" , "sum" : 64.0 , "count" : 2.0}

四：常用的类和常用的方法

Query

public class Query {

public static Query query(CriteriaDefinition criteriaDefinition);

public Query(CriteriaDefinition criteriaDefinition);

public Query addCriteria(CriteriaDefinition criteriaDefinition);

public Query skip(int skip);

public Query limit(int limit);

public Query withHint(String name);

public Query with(Pageable pageable);

public Query with(Sort sort);

}

Criteria

public class Criteria implements CriteriaDefinition {

public Criteria(String key);

public static Criteria where(String key);

public Criteria and(String key);

public Criteria is(Object o);

public Criteria ne(Object o);

public Criteria lt(Object o);

public Criteria lte(Object o);

public Criteria gt(Object o);

public Criteria gte(Object o);

public Criteria in(Object... o);

public Criteria nin(Object... o);

public Criteria not();

public Criteria regex(String re);

public Criteria andOperator(Criteria... criteria);

public Criteria orOperator(Criteria... criteria);

public Criteria mod(Number value, Number remainder);

public Criteria all(Object... o);

public Criteria size(int s);

public Criteria exists(boolean b);

public Criteria type(int t);

}

Update

public class Update {

public static Update update(String key, Object value);

public Update set(String key, Object value);

public Update inc(String key, Number inc);

public Update push(String key, Object value);

public Update pop(String key, Position pos);

}

MongoTemplate

public class MongoTemplate implements MongoOperations {

String getCollectionName(Class<?> entityClass);

<T> DBCollection createCollection(Class<T> entityClass);

<T> DBCollection createCollection(Class<T> entityClass, CollectionOptions collectionOptions);

DBCollection createCollection(String collectionName);

DBCollection createCollection(String collectionName, CollectionOptions collectionOptions);

Set<String> getCollectionNames();

DBCollection getCollection(String collectionName);

<T> boolean collectionExists(Class<T> entityClass);

boolean collectionExists(String collectionName);

<T> void dropCollection(Class<T> entityClass);

void dropCollection(String collectionName);

<T> List<T> findAll(Class<T> entityClass);

<T> List<T> findAll(Class<T> entityClass, String collectionName);

<T> GroupByResults<T> group(String inputCollectionName, GroupBy groupBy, Class<T> entityClass);

<T> GroupByResults<T> group(Criteria criteria, String inputCollectionName, GroupBy groupBy, Class<T> entityClass);

<O> AggregationResults<O> aggregate(TypedAggregation<?> aggregation, String collectionName, Class<O> outputType);

<O> AggregationResults<O> aggregate(TypedAggregation<?> aggregation, Class<O> outputType);

<O> AggregationResults<O> aggregate(Aggregation aggregation, Class<?> inputType, Class<O> outputType);

<O> AggregationResults<O> aggregate(Aggregation aggregation, String collectionName, Class<O> outputType);

<T> MapReduceResults<T> mapReduce(String inputCollectionName, String mapFunction, String reduceFunction,

Class<T> entityClass);

<T> MapReduceResults<T> mapReduce(String inputCollectionName, String mapFunction, String reduceFunction,

MapReduceOptions mapReduceOptions, Class<T> entityClass);

<T> MapReduceResults<T> mapReduce(Query query, String inputCollectionName, String mapFunction, String reduceFunction,

Class<T> entityClass);

<T> MapReduceResults<T> mapReduce(Query query, String inputCollectionName, String mapFunction, String reduceFunction,

MapReduceOptions mapReduceOptions, Class<T> entityClass);

<T> GeoResults<T> geoNear(NearQuery near, Class<T> entityClass);

<T> GeoResults<T> geoNear(NearQuery near, Class<T> entityClass, String collectionName);

<T> T findOne(Query query, Class<T> entityClass);

<T> T findOne(Query query, Class<T> entityClass, String collectionName);

boolean exists(Query query, String collectionName);

boolean exists(Query query, Class<?> entityClass);

boolean exists(Query query, Class<?> entityClass, String collectionName);

<T> List<T> find(Query query, Class<T> entityClass);

<T> List<T> find(Query query, Class<T> entityClass, String collectionName);

<T> T findById(Object id, Class<T> entityClass);

<T> T findById(Object id, Class<T> entityClass, String collectionName);

<T> T findAndModify(Query query, Update update, Class<T> entityClass);

<T> T findAndModify(Query query, Update update, Class<T> entityClass, String collectionName);

<T> T findAndModify(Query query, Update update, FindAndModifyOptions options, Class<T> entityClass);

<T> T findAndModify(Query query, Update update, FindAndModifyOptions options, Class<T> entityClass,

String collectionName);

<T> T findAndRemove(Query query, Class<T> entityClass);

<T> T findAndRemove(Query query, Class<T> entityClass, String collectionName);

long count(Query query, Class<?> entityClass);

long count(Query query, String collectionName);

long count(Query query, Class<?> entityClass, String collectionName);

void insert(Object objectToSave);

void insert(Object objectToSave, String collectionName);

void insert(Collection<? extends Object> batchToSave, Class<?> entityClass);

void insert(Collection<? extends Object> batchToSave, String collectionName);

void insertAll(Collection<? extends Object> objectsToSave);

void save(Object objectToSave);

void save(Object objectToSave, String collectionName);

WriteResult upsert(Query query, Update update, Class<?> entityClass);

WriteResult upsert(Query query, Update update, String collectionName);

WriteResult upsert(Query query, Update update, Class<?> entityClass, String collectionName);

WriteResult updateFirst(Query query, Update update, Class<?> entityClass);

WriteResult updateFirst(Query query, Update update, String collectionName);

WriteResult updateFirst(Query query, Update update, Class<?> entityClass, String collectionName);

WriteResult updateMulti(Query query, Update update, Class<?> entityClass);

WriteResult updateMulti(Query query, Update update, String collectionName);

WriteResult updateMulti(final Query query, final Update update, Class<?> entityClass, String collectionName);

WriteResult remove(Object object);

WriteResult remove(Object object, String collection);

WriteResult remove(Query query, Class<?> entityClass);

WriteResult remove(Query query, Class<?> entityClass, String collectionName);

WriteResult remove(Query query, String collectionName);

<T> List<T> findAllAndRemove(Query query, String collectionName);

<T> List<T> findAllAndRemove(Query query, Class<T> entityClass);

<T> List<T> findAllAndRemove(Query query, Class<T> entityClass, String collectionName);

}

内容总结

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