MongoDB系列之整合Spring

4.1 创建maven项目

4.1.1 repositories

创建maven项目，其中repositories使用spring的maven库：

<repositories><repository><id>central</id><name>Maven Central</name><url>http://repo1.maven.org/maven2/</url></repository><repository><id>spring-release</id><name>Spring Maven Release Repository</name><url>http://repo.springsource.org/libs-release</url></repository><repository><id>atlassian-m2-repository</id><url>https://m2proxy.atlassian.com/repository/public</url></repository></repositories>

4.1.2 Dependencies

使用到的jar包：

<dependencies><dependency><groupId>javax.servlet</groupId><artifactId>servlet-api</artifactId><version>2.5</version><type>jar</type><scope>provided</scope></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>1.6.1</version><type>jar</type><scope>compile</scope></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>1.7.5</version><type>jar</type><scope>runtime</scope></dependency><dependency><groupId>org.mongodb</groupId><artifactId>mongo-java-driver</artifactId><version>2.10.1</version><type>jar</type><scope>compile</scope></dependency><dependency><groupId>org.springframework.data</groupId><artifactId>spring-data-mongodb</artifactId><version>1.2.1.RELEASE</version><type>jar</type><scope>compile</scope></dependency><dependency><groupId>org.springframework.data</groupId><artifactId>spring-data-mongodb-cross-store</artifactId><version>1.2.1.RELEASE</version><type>jar</type><scope>compile</scope></dependency><dependency><groupId>org.springframework.data</groupId><artifactId>spring-data-mongodb-log4j</artifactId><version>1.2.1.RELEASE</version><type>jar</type><scope>compile</scope></dependency></dependencies>

4.2 添加spring配置文件

spring的配置文件applicationContext.xml

<?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/beans        http://www.springframework.org/schema/beans/spring-beans-3.0.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/context        http://www.springframework.org/schema/context/spring-context-3.0.xsd"><context:component-scan base-package="liming.mongodb.example" /><mongo:mongo host="127.0.0.1" port="27017" /><!-- mongo的工厂，通过它来取得mongo实例,dbname为mongodb的数据库名，没有的话会自动创建 --><mongo:db-factory dbname="student" mongo-ref="mongo" /><!-- mongodb的主要操作对象，所有对mongodb的增删改查的操作都是通过它完成 --><bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate"><constructor-arg name="mongoDbFactory" ref="mongoDbFactory" /></bean><!-- 映射转换器，扫描back-package目录下的文件，根据注释，把它们作为mongodb的一个collection的映射 --><mongo:mapping-converter base-package="climing.mongodb.example.data.model" /><!-- mongodb bean的仓库目录，会自动扫描扩展了MongoRepository接口的接口进行注入 --><mongo:repositories base-package="liming.mongodb.example.data.impl" /><context:annotation-config /></beans>

4.3 增删改查

Userl实现的增删改查：

4.3.1UserEntity

package liming.mongodb.example.data.model;import java.util.Date;import org.springframework.data.annotation.Id;import org.springframework.data.mongodb.core.mapping.Document;@Document(collection = "user")public class UserEntity {@Idprivate String id;private NameEntity name;private int age;private int works;private Date birth;private String password;private String regionName;private String[] special;public String getId() {return id;}public void setId(String id) {this.id = id;}public NameEntity getName() {return name;}public void setName(NameEntity name) {this.name = name;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public int getWorks() {return works;}public void setWorks(int works) {this.works = works;}public Date getBirth() {return birth;}public void setBirth(Date birth) {this.birth = birth;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public String getRegionName() {return regionName;}public void setRegionName(String regionName) {this.regionName = regionName;}public String[] getSpecial() {return special;}public void setSpecial(String[] special) {this.special = special;}  }

4.3.2 NameEntity

package liming.mongodb.example.data.model;public class NameEntity {private String username;private String nickname;public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getNickname() {return nickname;}public void setNickname(String nickname) {this.nickname = nickname;}}

4.3.3 UserDao

package liming.mongodb.example.data;import java.util.List;import liming.mongodb.example.data.model.UserEntity;import org.springframework.transaction.annotation.Transactional;@Transactionalpublic interface UserDao {public abstract void _test();public abstract void createCollection();public abstract List<UserEntity> findList(int skip, int limit);public abstract List<UserEntity> findListByAge(int age);public abstract UserEntity findOne(String id);public abstract UserEntity findOneByUsername(String username);public abstract void insert(UserEntity entity);public abstract void update(UserEntity entity);}

4.3.4 UserDaoImpl

package liming.mongodb.example.data.impl;import java.util.List;import java.util.Set;import liming.mongodb.example.data.UserDao;import liming.mongodb.example.data.model.UserEntity;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.data.domain.Sort;import org.springframework.data.domain.Sort.Direction;import org.springframework.data.domain.Sort.Order;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;import org.springframework.stereotype.Repository;import com.mongodb.DB;@Repositorypublic class UserDaoImpl implements UserDao {public static final Logger logger = LoggerFactory.getLogger(UserDaoImpl.class);@Autowiredprivate MongoTemplate mongoTemplate;@Overridepublic void _test() {Set<String> colls = this.mongoTemplate.getCollectionNames();for (String coll : colls) {logger.info("CollectionName=" + coll);}DB db = this.mongoTemplate.getDb();logger.info("db=" + db.toString());}@Overridepublic void createCollection() {if (!this.mongoTemplate.collectionExists(UserEntity.class)) {this.mongoTemplate.createCollection(UserEntity.class);}}@Overridepublic List<UserEntity> findList(int skip, int limit) {Query query = new Query();query.with(new Sort(new Order(Direction.ASC, "_id")));query.skip(skip).limit(limit);return this.mongoTemplate.find(query, UserEntity.class);}@Overridepublic List<UserEntity> findListByAge(int age) {Query query = new Query();query.addCriteria(new Criteria("age").is(age));return this.mongoTemplate.find(query, UserEntity.class);}@Overridepublic UserEntity findOne(String id) {Query query = new Query();query.addCriteria(new Criteria("_id").is(id));return this.mongoTemplate.findOne(query, UserEntity.class);}@Overridepublic UserEntity findOneByUsername(String username) {Query query = new Query();query.addCriteria(new Criteria("name.username").is(username));return this.mongoTemplate.findOne(query, UserEntity.class);}@Overridepublic void insert(UserEntity entity) {this.mongoTemplate.insert(entity);}@Overridepublic void update(UserEntity entity) {Query query = new Query();query.addCriteria(new Criteria("_id").is(entity.getId()));Update update = new Update();update.set("age", entity.getAge());update.set("password", entity.getPassword());update.set("regionName", entity.getRegionName());update.set("special", entity.getSpecial());update.set("works", entity.getWorks());update.set("name", entity.getName());this.mongoTemplate.updateFirst(query, update, UserEntity.class);}}

4.3.5 测试代码

package liming.mongodb.example;import java.util.Arrays;import java.util.Date;import java.util.List;import liming.mongodb.example.data.UserDao;import liming.mongodb.example.data.impl.UserDaoImpl;import liming.mongodb.example.data.model.UserEntity;import org.springframework.context.ConfigurableApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public class ApplicationSpring {public static void main(String[] args) {System.out.println("Bootstrapping HelloMongo");ConfigurableApplicationContext context = null;context = new ClassPathXmlApplicationContext("applicationContext.xml");UserDao userDao = context.getBean(UserDaoImpl.class);        userDao._test();UserEntity entity1 = new UserEntity();entity1.setId("5");entity1.setAge(1);entity1.setBirth(new Date());entity1.setPassword("asdfasdf");entity1.setRegionName("北京");entity1.setWorks(1);userDao.insert(entity1);userDao.update(entity1);userDao.createCollection();List<UserEntity> list = userDao.findList(0, 10);for (UserEntity e : list) {System.out.println("all - id=" + e.getId() + ", age=" + e.getAge() + ", password=" + e.getPassword() + ", regionName=" + e.getRegionName() + ", special=" + Arrays.toString(e.getSpecial())+ ", name=" + e.getName().getUsername() + "-" + e.getName().getNickname() + ", birth=" + e.getBirth());}list = userDao.findListByAge(1);for (UserEntity e : list) {System.out.println("age=1 - id=" + e.getId() + ", age=" + e.getAge() + ", password=" + e.getPassword() + ", regionName=" + e.getRegionName() + ", special="+ Arrays.toString(e.getSpecial()) + ", name=" + e.getName().getUsername() + "-" + e.getName().getNickname() + ", birth=" + e.getBirth());}UserEntity e = userDao.findOne("1");System.out.println("id=1 - id=" + e.getId() + ", age=" + e.getAge() + ", password=" + e.getPassword() + ", regionName=" + e.getRegionName() + ", special=" + Arrays.toString(e.getSpecial())+ ", name=" + e.getName().getUsername() + "-" + e.getName().getNickname() + ", birth=" + e.getBirth());e = userDao.findOneByUsername("limingnihao");System.out.println("username=limingnihao - id=" + e.getId() + ", age=" + e.getAge() + ", password=" + e.getPassword() + ", regionName=" + e.getRegionName() + ", special="+ Arrays.toString(e.getSpecial()) + ", name=" + e.getName().getUsername() + "-" + e.getName().getNickname() + ", birth=" + e.getBirth());System.out.println("DONE!");}}