MongoDB 整合 Spring 简单demo

MongoDB 整合 Spring 简单demo

添加配置文件：spring-mongodb.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:mongo="http://www.springframework.org/schema/data/mongo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/data/mongo http://www.springframework.org/schema/data/mongo/spring-mongo.xsd">

    <!--连接mongodb-->
    <mongo:mongo id="mongo" host="127.0.0.1" port="27017"></mongo:mongo>


    <bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
        <constructor-arg ref="mongo"></constructor-arg>
        <constructor-arg name="databaseName" value="test"></constructor-arg>
    </bean>

</beans>

添加 pom.xml

<properties>
        <spring.version>4.2.3.RELEASE</spring.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.mongodb</groupId>
            <artifactId>mongo-java-driver</artifactId>
            <version>3.8.0</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-mongodb</artifactId>
            <version>1.10.7.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jms</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.4</version>
        </dependency>

    </dependencies>

简单的demo测试

创建一个实体类Car

@Data
public class Car {

    private String name;

    private Date time;

    private Integer price;

}

创建一个测试类

public class Demo {

    private MongoTemplate mongoTemplate;

    @Before
    public void before(){

    ClassPathXmlApplicationContext mo = new ClassPathXmlApplicationContext("classpath:spring-mongodb.xml");
    mongoTemplate=(MongoTemplate) mo.getBean("mongoTemplate");

    }

    /**
     * 新增
     */
    @Test
    public void test2(){
        Car a = new Car();
        a.setName("法拉利");
        a.setTime(new Date());
        a.setPrice(78);
        mongoTemplate.save(a);
    }
    @Test
    public void test(){
        Car a = new Car();
        a.setName("黑马");
        a.setTime(new Date());
        a.setPrice(66);
        mongoTemplate.save(a);
    }


    /**
     * 查询加分页
     */
    @Test
    public void test6(){
        int page=1; //当前页
        int rows=3; //每页条数
        Query query = new Query();
        query.skip((page-1)*rows).limit(rows);
        List<Car> cars = mongoTemplate.find(query, Car.class);
        System.out.println(cars);
    }

    /**
     * 单条件查询
     */
    @Test
    public void test4(){
        Query query = new Query();
        Criteria where = new Criteria();
        // where.and("price").lt(78); //查询价格小于78
        //where.and("price").is(78);//查询价格是78
        where.and("price").lte(78);//查询小于等于78
        query.addCriteria(where);
        List<Car> cars = mongoTemplate.find(query, Car.class);
        System.out.println(cars);
    }

    /**
     * 多条件查询
     */
    @Test
    public void test5(){
        Query query = new Query();
        Criteria where1= new Criteria();
        where1.and("price").lte(78);//查询小于等于78
        Criteria where2 = new Criteria();
        where2.and("price").gte(50);//大于等于50
        query.addCriteria(new Criteria().andOperator(where1,where2));
        List<Car> cars = mongoTemplate.find(query, Car.class);
        System.out.println(cars);
    }

    /**
     * 修改
     */
    @Test
    public void test7(){
        Query query = new Query();
        Criteria where = new Criteria();
        where.and("price").is(66);//修改价格等于66的
        query.addCriteria(where);
        Update update = new Update();
        update.set("price",10);//重新赋值为10
        mongoTemplate.updateFirst(query,update,Car.class);
        //修改第一条符合的数据
        //  mongoTemplate.updateMulti(query,update,Car.class);//修改所有符合的数据

    }
    @Test
    public void test8(){
        Query query = new Query();
        Criteria where = new Criteria();
        where.and("price").is(10);//删除价格等于10 的
        query.addCriteria(where);
        mongoTemplate.remove(query,Car.class);
    }
}