[Software environment installation and deployment] Docker installation of MongoDB under Huawei cloud server and SpringBoot integration of MongoDB development and use

Install and test MongoDB

pull image

docker pull mongo:latest

Create and start containers

docker run -d --restart=always -p 27017:27017 --name mymongo -v /data/db:/data/db -d mongo

Log in to the mongo container and enter the [admin] database

MongoDB version 6.0 and above enters the container using the following command

docker exec -it mymongo[创建时对应的MongoDB容器名] mongosh admin

Create a user, mongo has no user by default

db.createUser({ user:'root',pwd:'123456',roles:[ { role:'userAdminAnyDatabase', db: 'admin'},'readWriteAnyDatabase']});

【user:‘root’ 】：设置用户名为root
【pwd:‘123456’】：设置密码为123456
【role:‘userAdminAnyDatabase’】：只在admin数据库中可用，赋予用户所有数据库的userAdmin权限
【db: ‘admin’】：可操作的数据库
【‘readWriteAnyDatabase’】：赋予用户读写权限

Connect to mongo database

db.auth('root', '123456')

Test the database, insert a statement

 db.user.insert({
   
   "name":"金智秀","age":18})

Test the database and query the statement just inserted

view all databases

show dbs

open designated ports

firewall-cmd --add-port=27017/tcp --permanent
firewall-cmd --reload

Open Server Security Group

navicat connection test

View the database tables in mongdb

SpringBoot integrates mongoDB

import dependencies

   <!--mongodb-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-mongodb</artifactId>
        </dependency>

Add yml configuration

spring:
  data:
    mongodb:
      uri: mongodb://192.168.239.140:27017/test
      username: root
      password: 123456

Write entity class

@Data
@Document("User")
public class User {
    
    
    @Id
    private String id;
    private String name;
    private Integer age;
    private String email;
    private String createDate;
}

test class

 @Autowired
    private MongoTemplate mongoTemplate;

    //添加
    @Test
    public void createUser() {
    
    
        User user = new User();
        user.setAge(20);
        user.setName("金智秀");
        user.setEmail("[email protected]");
        User user1 = mongoTemplate.insert(user);
        System.out.println(user1);
    }
    //查询所有
    @Test
    public void findUser() {
    
    
        List<User> userList = mongoTemplate.findAll(User.class);
        System.out.println(userList);
    }

    //根据id查询
    @Test
    public void getById() {
    
    
        User user =
                mongoTemplate.findById("64846c08a263b2302594b596", User.class);
        System.out.println(user);
    }

    //条件查询
    @Test
    public void findUserList() {
    
    
        Query query = new Query(Criteria
                .where("name").is("test")
                .and("age").is(20));
        List<User> userList = mongoTemplate.find(query, User.class);
        System.out.println(userList);
    }

    //模糊查询
    @Test
    public void findUsersLikeName() {
    
    
        String name = "est";
        String regex = String.format("%s%s%s", "^.*", name, ".*$");
        Pattern pattern = Pattern.compile(regex, Pattern.CASE_INSENSITIVE);
        Query query = new Query(Criteria.where("name").regex(pattern));
        List<User> userList = mongoTemplate.find(query, User.class);
        System.out.println(userList);
    }

    //分页查询
    @Test
    public void findUsersPage() {
    
    
        String name = "est";
        int pageNo = 1;
        int pageSize = 10;

        Query query = new Query();
        String regex = String.format("%s%s%s", "^.*", name, ".*$");
        Pattern pattern = Pattern.compile(regex, Pattern.CASE_INSENSITIVE);
        query.addCriteria(Criteria.where("name").regex(pattern));
        int totalCount = (int) mongoTemplate.count(query, User.class);
        List<User> userList = mongoTemplate.find(query.skip((pageNo - 1) * pageSize).limit(pageSize), User.class);

        Map<String, Object> pageMap = new HashMap<>();
        pageMap.put("list", userList);
        pageMap.put("totalCount",totalCount);
        System.out.println(pageMap);
    }

    //修改
    @Test
    public void updateUser() {
    
    
        User user = mongoTemplate.findById("64846c08a263b2302594b596", User.class);
        user.setName("test_1");
        user.setAge(25);
        user.setEmail("[email protected]");
        Query query = new Query(Criteria.where("_id").is(user.getId()));
        Update update = new Update();
        update.set("name", user.getName());
        update.set("age", user.getAge());
        update.set("email", user.getEmail());
        UpdateResult result = mongoTemplate.upsert(query, update, User.class);
        long count = result.getModifiedCount();
        System.out.println(count);
    }

    //删除操作
    @Test
    public void delete() {
    
    
        Query query =
                new Query(Criteria.where("_id").is("64846c08a263b2302594b596"));
        DeleteResult result = mongoTemplate.remove(query, User.class);
        long count = result.getDeletedCount();
        System.out.println(count);
    }

ApiPost interface test