Spring集成MongoDB

开篇

Spring提供了对非关系数据库的集成，Spring的spring-data包提供了对mongoDB和redis集成的工具包。此篇博客介绍一下Spring和MongoDB的集成。

导入工具包

需要的工具包有spring的jar包、spring-common的jar包以及spring-data的mongoDB的jar包。
其中，
spring的jar包有aop、asm、aspects、beans、context、core、expression、jdbc、transaction等。
spring-common的jar包有commons-beanutils、commons-codec、commons-collections、commons-io、commons-lang、commons-logging、commons-pool等。
spring-data的mongoDB的jar包有spring-data-commons-aspects、spring-data-commons-core、spring-data-document-core、spring-data-mongodb、spring-data-mongodb-cross-store、spring-data-mongodb-log4j等。
另外还有一个是mongo.jar

工具包截图

配置文件

<?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-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/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> 
<mongo:mongo host="192.168.0.138" port="27017"/>

<bean id="mongoTemplate" class="org.springframework.data.document.mongodb.MongoTemplate">
<constructor-arg ref="mongo"/>
<constructor-arg name="databaseName" value="db"/>
<constructor-arg name="defaultCollectionName" value="person" />
</bean>

<bean id="personRepository" class="com.mongo.dao.impl.PersonRepository">
<property name="mongoTemplate" ref="mongoTemplate"></property>
</bean>

<context:annotation-config />

</beans>

代码编写

public class Person implements Serializable {

/**
*
*/
private static final long serialVersionUID = 3617931430808763429L;

private String id;
private String name;
private int age;
public Person() {
super();
}
public Person(String id, String name, int age) {
super();
this.id = id;
this.name = name;
this.age = age;
}
/**
* @return the id
*/
public String getId() {
return id;
}
/**
* @param id the id to set
*/
public void setId(String id) {
this.id = id;
}
/**
* @return the name
*/
public String getName() {
return name;
}
/**
* @param name the name to set
*/
public void setName(String name) {
this.name = name;
}
/**
* @return the age
*/
public int getAge() {
return age;
}
/**
* @param age the age to set
*/
public void setAge(int age) {
this.age = age;
}
/**
*
* @param name
* @param age
*/
public Person(String name, int age) {
super();
this.name = name;
this.age = age;
}

public String toString() {
return "Person[id="+id+",name="+name+",age="+age+"]";
}

}

public interface AbstractRepository {

public void insert(Person person);

public Person findOne(String id);

public List<Person> findAll();

public List<Person> findByRegex(String regex);

public void removeOne(String id);

public void removeAll();

public void findAndModify(String id);

}

public class PersonRepository implements AbstractRepository {

private MongoTemplate mongoTemplate;

@Override
public List<Person> findAll() {
return getMongoTemplate().find(new Query(), Person.class);

}

@Override
public void findAndModify(String id) {

getMongoTemplate().updateFirst(new Query(Criteria.where("id").is(id)), new Update().inc("age", 3));

}

@Override
public List<Person> findByRegex(String regex) {
Pattern pattern = Pattern.compile(regex,Pattern.CASE_INSENSITIVE);
Criteria criteria = new Criteria("name").regex(pattern.toString());
return getMongoTemplate().find(new Query(criteria), Person.class);

}

@Override
public Person findOne(String id) {
return getMongoTemplate().findOne(new Query(Criteria.where("id").is(id)), Person.class);

}

@Override
public void insert(Person person) {
getMongoTemplate().insert(person);
}

@Override
public void removeAll() {
List<Person> list = this.findAll();
if(list != null){
for(Person person : list){
getMongoTemplate().remove(person);
}
}

}

@Override
public void removeOne(String id) {
Criteria criteria = Criteria.where("id").in(id);
if(criteria == null){
Query query = new Query(criteria);
if(query != null && getMongoTemplate().findOne(query, Person.class) != null)
getMongoTemplate().remove(getMongoTemplate().findOne(query, Person.class));
}

}

/**
* @return the mongoTemplate
*/
public MongoTemplate getMongoTemplate() {
return mongoTemplate;
}

/**
* @param mongoTemplate the mongoTemplate to set
*/
public void setMongoTemplate(MongoTemplate mongoTemplate) {
this.mongoTemplate = mongoTemplate;
}

}
测试程序
public class MongoTest {

private static Log log = LogFactory.getLog(MongoTest.class.getName());

private  AbstractRepository pr=null;

public void init(){

ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
pr= (PersonRepository)ctx.getBean("personRepository");

}

public void insert(){

Person p=new Person("cuiran",27);
pr.insert(p);
}

public void findOne(){
String id="50c83cb552c2ceb0463177d6";
Person p= pr.findOne(id);
log.debug(p);
}

public void listAll(){

List<Person> list=pr.findAll();

for (Person p:list){
log.debug(p.toString());
}

}

public void start(){
init();

//insert();
//listAll();

findOne();
}

public static void main(String[] args) {
MongoTest t=new MongoTest();
t.start();
}

}

结束

通过Spring集成MongoDB的底层代码封装，项目中用到非关系型数据MongoDB存储就变得容易很多。