第50章：Java操作MongoDB-MongoDB和Spring

①

Spring通过Spring Data MongoDB模块来集成和支持MongoDB

②Maven加入lib包

<dependency>

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

<artifactId>spring-data-commons</artifactId>

<version>1.5.1.RELEASE</version>

</dependency>

<dependency>

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

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

<version>1.4.2.RELEASE</version>

</dependency>

③在Spring的配置文件中，加入如下的命名空间

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

对应的location是：

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

http://www.springframework.org/schema/data/mongo/spring-mongo-1.5.xsd

④spring.xml

<mongo:mongo host="192.168.1.106" port="20000"></mongo:mongo>

<bean id="mongoTemplate"   class="org.springframework.data.mongodb.core.MongoTemplate">

<constructor-arg ref="mongo"/>

<constructor-arg name="databaseName" value="db2"/>

</bean>

⑤测试使用

import java.util.List;

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

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

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.Service;

//@Service

public class MyMongoSpringTest {

//    @Autowired

private MongoTemplate mt = null;

public static void main(String[] args) {

ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");

MyMongoSpringTest t = (MyMongoSpringTest)ctx.getBean("myMongoSpringTest");

final String COL_NAME = "users";

//add

//        UserModel um = new UserModel();

//        um.setAge(1);

//        um.setName("n1");

//        um.setUserId("u1");

//        t.mt.insert(um,COL_NAME);

//update

//userId=t222 or (age>=100 and age<130)

Criteria c =

new Criteria().andOperator(

new Criteria("userId").is("t222"),

new Criteria().andOperator(

new Criteria("age").gte(100),

new Criteria("age").lt(130)

)

);

t.mt.updateMulti(new Query(c), Update.update("name", "nn126"), UserModel.class,COL_NAME);

//remove

//

//        Criteria c = new Criteria("userId").is("t1");

//        t.mt.remove(new Query(c), COL_NAME);

List<UserModel> list = t.mt.find(new Query(c),UserModel.class,COL_NAME);

System.out.println("list==="+list);

}

}

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