【MongoDB】Springboot中MongoDB简单使用

1. docker安装MongoDB

拉取镜像

shell 复制代码

docker pull mongo

创建容器

shell 复制代码

docker run -di --name mongo-service --restart=always -p 27017:27017 -v ~/data/mongodata:/data mongo

2. 导入依赖

xml 复制代码

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

3. 配置文件

application.yml

yml 复制代码

server:
  port: 9998
spring:
  data:
    mongodb:
      host: 192.168.200.130
      port: 27017
      database: leadnews-history

4. 实体类映射

java 复制代码

package com.mongo.pojo;

import lombok.Data;
import org.springframework.data.mongodb.core.mapping.Document;

import java.io.Serializable;
import java.util.Date;

/**
 * <p>
 * 联想词表
 * </p>
 *
 * @author zsx
 */
@Data
@Document("ap_associate_words")
public class ApAssociateWords implements Serializable {

    private static final long serialVersionUID = 1L;

    private String id;

    /**
     * 联想词
     */
    private String associateWords;

    /**
     * 创建时间
     */
    private Date createdTime;

}

5. 测试

java 复制代码

package com.zsx.mongo.test;


import com.zsx.mongo.MongoApplication;
import com.zsx.mongo.pojo.ApAssociateWords;
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.data.domain.Sort;
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.test.context.junit4.SpringRunner;

import java.util.Date;
import java.util.List;

@SpringBootTest(classes = MongoApplication.class)
@RunWith(SpringRunner.class)
public class MongoTest {


    @Autowired
    private MongoTemplate mongoTemplate;

    //保存
    @Test
    public void saveTest(){
        /*for (int i = 0; i < 10; i++) {
            ApAssociateWords apAssociateWords = new ApAssociateWords();
            apAssociateWords.setAssociateWords("黑马头条");
            apAssociateWords.setCreatedTime(new Date());
            mongoTemplate.save(apAssociateWords);
        }*/
        ApAssociateWords apAssociateWords = new ApAssociateWords();
        apAssociateWords.setAssociateWords("黑马直播");
        apAssociateWords.setCreatedTime(new Date());
        mongoTemplate.save(apAssociateWords);

    }

    //查询一个
    @Test
    public void saveFindOne(){
        ApAssociateWords apAssociateWords = mongoTemplate.findById("60bd973eb0c1d430a71a7928", ApAssociateWords.class);
        System.out.println(apAssociateWords);
    }

    //条件查询
    @Test
    public void testQuery(){
        Query query = Query.query(Criteria.where("associateWords").is("黑马头条"))
                .with(Sort.by(Sort.Direction.DESC,"createdTime"));
        //query.with(Sort.by(Sort.Direction.DESC,"createdTime"));  //按createdTime倒序排序
        //query.limit(userSearchDto.getPageSize());  //查询多少条
        List<ApAssociateWords> apAssociateWordsList = mongoTemplate.find(query, ApAssociateWords.class);
        System.out.println(apAssociateWordsList);
    }

    @Test
    public void testDel(){
        mongoTemplate.remove(Query.query(Criteria.where("associateWords").is("黑马头条")),ApAssociateWords.class);
    }
}

tips: 使用navicat Premium 15以上版本，可以连接MongoDB 查看数据