Java springboot Mongodb增删改查代码实例

1、添加依赖

复制代码

      org.springframework.boot
      spring-boot-starter-data-mongodb
      2.1.6.RELEASE
    

完整pom.xm文件

  4.0.0
  
    org.springframework.boot
    spring-boot-starter-parent
    2.1.7.RELEASE
     
  
  com.vue
  demo
  0.0.1-SNAPSHOT
  demo
  Demo project for Spring Boot

  
    1.8
  

  
    
      org.springframework.boot
      spring-boot-starter-web
    

    
      mysql
      mysql-connector-java
      runtime
    

    
      com.alibaba
      fastjson
      1.2.49
    
    
      com.alibaba
      druid
      1.0.26
    
    
      org.projectlombok
      lombok
      1.16.20
    
    
      com.baomidou
      mybatis-plus-boot-starter
      2.2.0
    

    
      io.springfox
      springfox-swagger2
      2.8.0
    
    
      io.springfox
      springfox-swagger-ui
      2.8.0
    

    
    
      org.springframework.boot
      spring-boot-starter-data-mongodb
      2.1.6.RELEASE
    

    
      org.springframework.boot
      spring-boot-starter-test
      test
      
        
          org.junit.vintage
          junit-vintage-engine
        
      
    
  

  
    
      
        org.springframework.boot
        spring-boot-maven-plugin
      
    
  

2、applicaiton.yml

server:
 port: 8081

mybatis-plus:
 　　typeAliasesPackage: com.vue.demo.entity
 　　mapperLocations: classpath:mapper/*.xml
spring:
 datasource:
  url: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=GMT%2B8
  username: root
  password: yang156122
  driver-class-name: com.mysql.jdbc.Driver
  # 使用druid数据源
  type: com.alibaba.druid.pool.DruidDataSource
 redis:
  #redis单机配置
  host: localhost
  port: 6379
  # 选择redis的数据库的分库
  database: 5
  #redis连接池配置
  jedis:
   pool:
    max-idle: 10
    min-idle: 5
    max-active: 100
    max-wait: 3000
    timeout: 6005
 data:
  mongodb:
   uri: mongodb://localhost:27017/userArticle

3、Mongodb增删改查

package com.vue.demo.service.serviceimpl;

import com.alibaba.fastjson.JSONObject;
import com.mongodb.client.result.DeleteResult;
import com.mongodb.client.result.UpdateResult;
import com.vue.demo.entity.UserArticle;
import com.vue.demo.service.UserArticleService;
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.Service;

import java.util.List;

/**
 * @author yangwj
 * @date 2020/3/28 11:07
 */

@Service
public class UserArticleServiceImpl implements UserArticleService {
  @Autowired
  private MongoTemplate mongoTemplate;

  @Override
  public UserArticle getArticleByTitle(String title) {
    Query query = new Query();
    query.addCriteria(Criteria.where("articleTitle").is(title));
    UserArticle article = mongoTemplate.findOne(query, UserArticle.class);
    return article;
  }

  @Override
  public UserArticle insertArticle(UserArticle userArticle) {
    List userArticleList = mongoTemplate.findAll(UserArticle.class);
    if (userArticleList.isEmpty()) {
      userArticle.setId(1);
    } else {
      userArticle.setId(userArticleList.size() + 1);
    }
    UserArticle article = mongoTemplate.save(userArticle);
    return article;
  }

  @Override
  public List getAllArticles() {
    List userArticles = mongoTemplate.findAll(UserArticle.class);
    return userArticles;
  }

  @Override
  public DeleteResult delByName(String name) {
    Query query = new Query();
    query.addCriteria(Criteria.where("articleTitle").is(name));
    DeleteResult result =mongoTemplate.remove(query,UserArticle.class);
    return result;
  }

  @Override
  public UpdateResult updateReadNumByTitle(String title) {
    Query query = new Query();
    query.addCriteria(Criteria.where("articleTitle").is(title));
    UserArticle article = mongoTemplate.findOne(query, UserArticle.class);
    Integer readNum = article.getReadNum() == null? 1: article.getReadNum()+1;
    article.setReadNum(readNum);
    Update update = new Update();
    update.set("readNum",article.getReadNum());
    UpdateResult result = mongoTemplate.updateFirst(query,update,UserArticle.class);
    return result;
  }

  @Override
  public UpdateResult addUserComment(String title, String comment) {
    JSONObject jsonObject = new JSONObject();
    Query query = new Query();
    query.addCriteria(Criteria.where("articleTitle").is(title));
    UserArticle article = mongoTemplate.findOne(query, UserArticle.class);
    if(article.getComment() == null){
      jsonObject.put(title,comment);
    }else {
      jsonObject = (JSONObject) JSONObject.parse(article.getComment());
      jsonObject.put(title,comment);
    }
    Integer commentNum = article.getCommentNum() == null ? 1:article.getCommentNum()+1;
    Update update = new Update();
    update.set("comment",jsonObject.toJSONString());
    update.set("commentNum",commentNum);
    UpdateResult result = mongoTemplate.updateFirst(query,update,UserArticle.class);
    return result;
  }
}

github地址：https://github.com/812406210/vue-demo.git

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。