Docker安装MongoDB及与Springboot整合

注：基本用法普通安装请查看之前一篇文章：mongodb入门级权威指南

1. 通过docker安装MongoDB

#拉取镜像
docker pull mongo:4.0.3
#创建容器
docker create --name mongodb -p 27017:27017 -v /data/mongodb:/data/db mongo:4.0.3
#启动容器
docker start mongodb
#进入容器
docker exec -it mongodb /bin/bash
#使用MongoDB客户端进行操作
mongo
> show dbs  #查询所有的数据库
admin  0.000GB
config  0.000GB
local  0.000GB

2.SpringBoot整合MongoDB

spring-data对MongoDB做了支持，使用spring-data-mongodb可以简化MongoDB的操作，地址：https://spring.io/projects/spring-data-mongodb。

导入依赖

<parent>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-parent</artifactId>
  <version>2.1.0.RELEASE</version>
</parent>
<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-test</artifactId>
  <scope>test</scope>
</dependency>

编写application.properties配置文件

spring: 
	application:
		name: itcast-mongodb
	data:
	mongodb:
	uri: mongodb://172.16.55.185:27017/testdb

编写PersonDao

import cn.itcast.mongodb.Person;
import com.mongodb.client.result.DeleteResult;
import com.mongodb.client.result.UpdateResult;
import org.springframework.beans.factory.annotation.Autowired;
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.Component;
import java.util.List;
@Component
public class PersonDao {
  @Autowired
  private MongoTemplate mongoTemplate;
  public void savePerson(Person person) {
    this.mongoTemplate.save(person);
 }
 public List<Person> queryPersonListByName(String name) {
    Query query = Query.query(Criteria.where("name").is(name));
    return this.mongoTemplate.find(query, Person.class);
 }
  public List<Person> queryPersonListByName(Integer page, Integer rows) {
    Query query = new Query().limit(rows).skip((page - 1) * rows);
    return this.mongoTemplate.find(query, Person.class);
 }
  public UpdateResult update(Person person) {
    Query query = Query.query(Criteria.where("id").is(person.getId()));
    Update update = Update.update("age", person.getAge());
    return this.mongoTemplate.updateFirst(query, update, Person.class);
 }
  public DeleteResult deleteById(String id) {
    Query query = Query.query(Criteria.where("id").is(id));
    return this.mongoTemplate.remove(query, Person.class);
 }
}

编写启动类

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class MongoApplication {
  public static void main(String[] args) {
    SpringApplication.run(MongoApplication.class, args);
 }
}

编写单元测试

import cn.itcast.mongodb.dao.PersonDao;
import org.bson.types.ObjectId;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.List;
@RunWith(SpringRunner.class)
@SpringBootTest
public class TestPersonDao {
  @Autowired
  private PersonDao personDao;
  @Test
  public void testSave() {
    Person person = new Person(ObjectId.get(), "张三", 20);
    this.personDao.savePerson(person);
 }
  @Test
  public void testQuery() {
    List<Person> personList = this.personDao.queryPersonListByName("张三");
    for (Person person : personList) {
      System.out.println(person);
   }
 }
  @Test
  public void testQuery2() {
    List<Person> personList = this.personDao.queryPersonListByName(2, 2);
    for (Person person : personList) {
      System.out.println(person);
   }
 }
  @Test
  public void testUpdate() {
    Person person = new Person();
    person.setId(new ObjectId("3f326ce235e1925204629537"));
    person.setAge(30);
    this.personDao.update(person);
 }
  @Test
  public void testDelete() {
    this.personDao.deleteById("3f326ce235e1925204629537");
 }
}