[原]Spring集成MongoDB
lfsf802发表于 2015-10-28 12:01:34
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
实体类：
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+"]";
}
}
DAO层接口
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);
}
DAO层接口实现
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。