SpringBoot之mongoTemplate的使用

springboot的版本1.5.17.RELEASE。

1、mongo的IP和端口

在resources下的application.properties中加入如下内容

spring.data.mongodb.host=localhost

spring.data.mongodb.database=test

spring.data.mongodb.port=27017

2、引入springboot mongo依赖

<dependency>

<groupId>org.springframework.boot</groupId>

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

</dependency>

3、使用mongoTemplate

经过步骤2和步骤1之后，可以直接注入mongoTemplate了，不需要我们再显示的定义bean了。

直接上代码了，如下所示，包含了保存、查询、分页查询、有条件的分页查询。

import java.util.Date;

import java.util.List;

import lombok.extern.slf4j.Slf4j;

import org.junit.Test;

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

import org.springframework.data.domain.PageRequest;

import org.springframework.data.domain.Pageable;

import org.springframework.data.domain.Sort;

import org.springframework.data.mongodb.core.MongoTemplate;

import org.springframework.data.mongodb.core.query.Query;

import com.mjduan.springbootmongodb.domain.User;

/**

* @author dmj1161859184@126.com 2018-11-27 21:19

* @version 1.0

* @since 1.0

*/

@Slf4j

public class MongoTemplateTest extends SpringbootMongodbApplicationTests {

/**

* properties中设置了属性后，就会自动配置MontoTemplate

*/

@Autowired

private MongoTemplate mongoTemplate;

@Test

public void testFindAll() {

List<User> users = mongoTemplate.findAll(User.class);

System.out.println(users);

}

@Test

public void testAddUser(www.fengshen157.com/ ) {

User user = new User();

user.setAge(9);

user.setAddress("address");

user.setUsername("crupper");

user.setDate(new Date(www.mcyllpt.com));

mongoTemplate.save(user);

}

@Test

public void testPage() {

Pageable pageable = new PageRequest(1, 3);

Query query = new Query();

query.with(pageable);

List<User> users = mongoTemplate.find(query, User.class);

log.info(users.toString());

}

@Test

public void testPageSort() {

Pageable pageable = new PageRequest(1, 3);

Query query = new Query();

query.with(pageable);

query.with(new Sort(Sort.Direction.ASC, "age"));

List<User> users = mongoTemplate.find(query, User.class);

log.info(users.toString());

}

@Test

public void testPageSortMulti(www.michenggw.com) {

Pageable pageable = new PageRequest(0, 6);

Query query = new Query(www.lezongyule.com);

query.with(pageable);

query.with(new Sort(Sort.Direction.ASC, "age").and(new Sort(Sort.Direction.DESC, "date")));

List<User> users = mongoTemplate.find(query, User.class);

log.info(users.toString());

}

@Test

public void testCount() {

Query query = new Query();

query.with(new Sort(Sort.Direction.ASC, "age").and(new Sort(Sort.Direction.DESC, "date")));

long count = mongoTemplate.count(query, User.class);

log.info(count + "");

}

}

SpringbootMongodbApplicationTests如下所示：

import org.junit.Test;

import org.junit.runner.RunWith;

import org.springframework.www.dasheng178.com boot.test.context.SpringBootTest;

import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)

@SpringBootTest

public class SpringbootMongodbApplicationTests {

@Test

public void contextLoads() {