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MongoDB的学习-安装与springboot的整合

mongoDB的学习:

1.mongodb 安装及使用

mongodb 安装及使用__mongodb安装使用

MongoDB社区下载

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环境变量的配置可以在任何位置执行bin下的exe程序

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配置完成后,就成功了。

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2.开始整合springboot mongoDB

1.导入依赖

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

2.添加mongodb配置yaml配置

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  #mongodb配置      spring:    data:         mongodb:           host: localhost           port: 27017           # mongodb数据库名称           database: monge_demo 

3.新实体类对应mongodb关系映射的集合

package com.ljquan.test.pojo.mongoDB;  import lombok.AllArgsConstructor; import lombok.Builder; import lombok.Data; import lombok.NoArgsConstructor; import org.springframework.data.annotation.Id;  import java.util.Date;

/** * @className Article * @Description 文章 用于mongodb的测试 * @Author ljquan * @Date 2022-06-10 11:39:02 * @Version 1.0.0 */
@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
public class Article { 
        
    /** * 文章id */
    @Id
    private Long id;

    /** * 用户ID */
    private Long userId;

    /** * 文章标题 */
    private String title;

    /** * 文章内容 */
    private String content;

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

    /** * 更新时间 */
    private Date updateTime;

    /** * 点赞数量 */
    private Long thumbUp;

    /** * 访客数量 */
    private Long visits;

}

4.开始使用Mongodb和springboot整合

创建ArticleService接口

package com.ljquan.test.service.mongoDB;

import com.ljquan.test.pojo.mongoDB.Article;
import org.springframework.stereotype.Service;

import java.util.List;

/** * @className ArticleService * @Description 服务条 * @Author ljquan * @Date 2022-06-10 13:54:33 * @Version 1.0.0 */
@Service
public interface ArticleService { 
        
    /** * 插入文章 * 插入 * * @param article 文章 * @return int */
    int insertArticle(Article article);

    /** * 更新文章 * * @param article 文章 * @return int */
    int updateArticle(Article article);

    /** * 删除文章 * * @param id id * @return int */
    int removeArticle(Long id);

    /** * 找到所有 * * @param article 文章 * @return {@code List<Article>} */
    List<Article> findAll(Article article);

    /** * 找到一个 * * @param article 文章 * @return {@code Article} */
    Article findOne(Article article);

    /** * 找到喜欢 * * @param article 文章 * @return {@code List<Article>} */
    List<Article> findLike(Article article);

    /** * 找到更多 * * @param article 文章 * @return {@code List<Article>} */
    List<Article> findMore(Article article);

}

创建实现类ArticleServiceImpl

package com.ljquan.test.service.mongoDB.impl;

import cn.hutool.core.date.DateUtil;
import com.ljquan.test.pojo.mongoDB.Article;
import com.ljquan.test.service.mongoDB.ArticleService;
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.time.LocalDateTime;
import java.util.List;
import java.util.regex.Pattern;

@Service
public class ArticleServiceImpl implements ArticleService { 
        
    @Autowired
    MongoTemplate mongoTemplate;

    /** * 插入文章 * * @param article 文章 * @return int */
    @Override
    public int insertArticle(Article article) { 
        
        try { 
        
            article.setCreateTime(DateUtil.date());
            mongoTemplate.insert(article);
            return 1;
        } catch (Exception e) { 
        
            e.printStackTrace();
            return -1;
        }
    }

    /** * 更新文章 * * @param article 文章 * @return int */
    @Override
    public int updateArticle(Article article) { 
        
        //通过query根据id查询出对应对象,通过update对象进行修改
        Query query = new Query(Criteria.where("_id").is(article.getId()));
        //更改信息
        Update update = new Update().set("username", article.getTitle());
        try { 
        
            mongoTemplate.updateFirst(query, update, Article.class);
            return 1;
        } catch (Exception e) { 
        
            e.printStackTrace();
            return -1;
        }
    }
    /** * 删除文章 * * @param id id * @return int */
    @Override
    public int removeArticle(Long id) { 
        

        Query query = new Query(Criteria.where("_id").is(id));
        try { 
        
            mongoTemplate.remove(query, Article.class);
            return 1;
        } catch (Exception e) { 
        
            e.printStackTrace();
            return -1;
        }
    }
    /** * 找到所有 * * @param article 文章 * @return {@code List<Article>} */
    @Override
    public List<Article> findAll(Article article) { 
        

        Query query = new Query(Criteria.where("_id").is(article.getId()));

        return mongoTemplate.findAll(Article.class, article.getTitle());
    }

    @Override
    public Article findOne(Article article) { 
        
        Query query = new Query(Criteria.where("_id").is(article.getId()));
        return mongoTemplate.findOne(query, Article.class);
    }

    /** * 模糊查询 * * @param article 文章 * @return {@code List<Article>} */
    @Override
    public List<Article> findLike(Article article) { 
        
        //设置
        Pattern pattern = Pattern.compile("^.*" + article.getContent().trim() + ".*$", Pattern.CASE_INSENSITIVE);
        Query query = new Query(Criteria.where("content").regex(pattern));
        return mongoTemplate.find(query, Article.class);
    }

    /** * 找到更多 * * @param article 文章 * @return {@code List<Article>} */
    @Override
    public List<Article> findMore(Article article) { 
        
        Query query = new Query(Criteria.where("content").is(article.getContent()));
        return mongoTemplate.find(query, Article.class);
    }

}

这里是最重要的,调用了刚刚导入进来的依赖,然后调用里面的接口实现整合

@Autowired
MongoTemplate mongoTemplate;

5.测试

   @Autowired
    ArticleServiceImpl articleService;

 /**
     * 测试发现相似
     */
    @Test
    public void testFindLike() {
        Article build = Article.builder().content("7").build();
        List<Article> like = articleService.findLike(build);
        System.out.println(like.size());
        like.forEach(article -> {
                    System.out.println(article.getContent());
                }
        );

    }

    /**
     * 测试插入文章
     */
    @Test
    public void testInsertArticle() {
        Article build = Article.builder()
                .content("7")
                .id(snowflake.nextId())
                .createTime(DateUtil.date())
                .thumbUp(9L)
                .updateTime(DateUtil.date())
                .build();
        int i = articleService.insertArticle(build);
        log.info("【article】= {} 插入成功", JSONUtil.toJsonStr(build));

    }

    /**
     * 测试发现所有
     */
    @Test
    public void testFindAll() {
        List<Article> all = articleService.findAll();
        log.info(all + " ");
    }


……

6.MongoDB数据库输出结果

2022-06-13 11:29:53.704 [main] INFO  org.mongodb.driver.connection - Opened connection [connectionId{localValue:3, serverValue:15}] to localhost:27017
2022-06-13 11:29:53.781 [main] INFO  com.ljquan.test.TestApplicationTests - [Article(id=1, userId=1535106423837560832, title=wwigzpxj10u8hda1zs8l更新之后的标题, content=mmcxzb9ookzl6jegxnrp53hicmo0t6onch0mcwlqpk6s2kqzpgie0pqrcb2ps9v3ut40ypqwht9kgwj6fjovpc3bmt2j8vx5qpmtud9uxslp04pe0oy9etu4018xe9xe7nl7t2bmojkj9nre6m8odj, createTime=Fri Jun 10 11:47:47 CST 2022, updateTime=Fri Jun 10 13:36:59 CST 2022, thumbUp=0, visits=0), Article(id=1535134388424151040, userId=1535134388424151041, title=ok94ysuekznpuwmi7puo, content=vvbfxw4mn0538vso42aktg6botfn17ro8bc0z58byb0mk22wfimbxcpgo273m7bzj6qs31kamu8p777kze6sarj8feywu1i77332ajauatu2rmi1aj96zmaukpqug6ovskws4xfq6wfrh8m3ut3iig, createTime=Fri Jun 10 13:38:54 CST 2022, updateTime=Fri Jun 10 13:38:54 CST 2022, thumbUp=0, visits=0), Article(id=1535134388495454208, userId=1535134388495454209, title=wqy8byd12n8p2pekl26n, content=bbzvqheql3qpwk9b6ju2r59srzekpvy4q2qglpxuyzc70nclfwulhzxmuqugoof7xx3jpfzhy1kkvklg9mqd6gqmqub39vht7fz9mf7ncwot3uazfzcgvuvm3icii3o5zcizlufrep6z9jau4likvb, createTime=Fri Jun 10 13:38:54 CST 2022, updateTime=Fri Jun 10 13:38:54 CST 2022, thumbUp=0, visits=0), Article(id=1535134388495454210, userId=1535134388495454211, title=bgpu1j0cmkswc02c3ghl, content=g8s6hf1wwipxg59ygqezn0h0e9wbynw2ju1ad3b4dd71188gaqu01oohbdhj4rchukf25gl8x4jiw2jhxtrkbexxobmvcn70lcos12gdzyrjmbkhxcruxdvectx0gpaxvnf3fjuwu28udyzo69q7nl, createTime=Fri Jun 10 13:38:54 CST 2022, updateTime=Fri Jun 10 13:38:54 CST 2022, thumbUp=0, visits=0), Article(id=1535134388495454212, userId=1535134388495454213, title=co8khj1kh4dw8fw1oxht, content=2b2ta1w52olvaavmvhmtlsgynkeux8ps87h64sjqmdy6eud0l5zh81yihtegegsvwxkbp5pamcldmwynrdiswfli75z4lcau5v210mxjlmat78rdloqsqfobwhr1f5cxo0217c7g8mqzeglzklf0rf, createTime=Fri Jun 10 13:38:54 CST 2022, updateTime=Fri Jun 10 13:38:54 CST 2022, thumbUp=0, visits=0), Article(id=1535134388495454214, userId=1535134388495454215, title=qp0cvb1rzfafoxscnbgr, content=rdhw4ys2mwsfzaa0vzdp7p1ufs1tk29yypdsiwvbnx7j2pglkljlkerd1myamiqr2r3o858qjjxzhra94073xft66ynri3up3nwhut9o4zkkkdtvz5nfmsyzb4usqr3e4u66ym2fhfuvczwbrz181p, createTime=Fri Jun 10 13:38:54 CST 2022, updateTime=Fri Jun 10 13:38:54 CST 2022, thumbUp=0, visits=0), Article(id=1535134388495454216, userId=1535134388495454217, title=gdykjbb6hipcsdkukdza, content=1616z4cpwq4cse7q19qj1ft7j3vegn03b2mfmrsjseylh8mv1qc3ntybiebb40ifubx8yr4muxlkvjb8dwi08flplg97mi63a95zxmq3rfam4lc5ckub6cih1cui9mse8qn28jbm3mtvu5ewv5xcd0, createTime=Fri Jun 10 13:38:54 CST 2022, updateTime=Fri Jun 10 13:38:54 CST 2022, thumbUp=0, visits=0), Article(id=1535134388495454218, userId=1535134388495454219, title=sbybn8n133q9ahh6hys4, content=z6zpdwvegw0o8txuo5ze1un316qulemjgvodctl0rkea40y0wfccf19nfmxqgk2w1ivfg0rzu11zot1hmhx08dqxpzsrwxts26oglz8mf4ojeupuqryiqohfyvnu5eg4uni4pklxrmmuzowi9net64, createTime=Fri Jun 10 13:38:54 CST 2022, updateTime=Fri Jun 10 13:38:54 CST 2022, thumbUp=0, visits=0), Article(id=1535134388495454220, userId=1535134388495454221, title=mo77ot1lnqnmjf37sh1u, content=mnm8w3fkh2gu1mabhlqw2jaobs7p5p171w5c1218khsjxk5o5dwg76hdgddhrpa54ht5mjth1e4hhof3p9wem9pfn9ehkn2pr0gvc647wq2f4h5fw0lwm5y1n67yif9aru652r8qjq2hfsldqr0pci, createTime=Fri Jun 10 13:38:54 CST 2022, updateTime=Fri Jun 10 13:38:54 CST 2022, thumbUp=0, visits=0), Article(id=1535134388495454222, userId=1535134388495454223, title=nepwd773h61rl2ygz354, content=zsw3kj1t6qsubxrp7wv9vl3e9ox8ueiyl1pt54z3o6y3gn7owakgqhz5n46jaa8i2tzt9467g4g6zrg3qxo3370kzqxgenub2xsptf6zjla3cykqoap82gg1cdnaik01npqj5pl9rsawbw6kx7xqz9, createTime=Fri Jun 10 13:38:54 CST 2022, updateTime=Fri Jun 10 13:38:54 CST 2022, thumbUp=0, visits=0), Article(id=1535134388495454224, userId=1535134388495454225, title=j647o22eewc0pyykfazg, content=q358f95wc252ggqjdrwpttle4o7xr4zx76askzcvedf3hv7t40ddknpxnomzkuhmmykvnqhloi9fsl7gxkl19b45hnsnd7ltb3td3ghcnh0bpx2a4wagcyhwniug5lgynqi3q0nq0b1ujgoi1zfz11, createTime=Fri Jun 10 13:38:54 CST 2022, updateTime=Fri Jun 10 13:38:54 CST 2022, thumbUp=0, visits=0), Article(id=1535135113699004416, userId=1535135113699004417, title=9wewx985ayf6m9ny4fbj标题0, content=4dqumthlfqjunoi26gc5sl2r57lasvae9vmsugl5eevau9mi1hicu0kanhmauh972o8bsixs8vmgmq7embcjgx79ys6q7e5utknya5jl2pnb715w15v88d5rf0mfkey8gzzq9p1nvi1j9s8e8evfyq内容0, createTime=Fri Jun 10 13:41:47 CST 2022, updateTime=Fri Jun 10 13:41:47 CST 2022, thumbUp=0, visits=0), Article(id=1535135113787084800, userId=1535135113787084801, title=4ko0ffg21ymplfnza7zw标题1, content=wwe94h9tplhiyg9inrrxeexinnb821ai80uxlmyyml1ipvwbwcf444buqfxluzpj5wkz969optqty6y7eup5ggx8h19ewq7mk6bnt14mlbq4zputac137rebqwq3af7rt4apeh61i8306760wydau9内容1, createTime=Fri Jun 10 13:41:47 CST 2022, updateTime=Fri Jun 10 13:41:47 CST 2022, thumbUp=0, visits=0), Article(id=1535135113787084802, userId=1535135113787084803, title=xoqmm0z43rj9f6fwvsnw标题2, 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Article(id=1535175698518511616, userId=null, title=null, content=7, createTime=Fri Jun 10 16:23:03 CST 2022, updateTime=Fri Jun 10 16:23:03 CST 2022, thumbUp=9, visits=null), Article(id=1536184056574775296, userId=null, title=null, content=7, createTime=Mon Jun 13 11:09:54 CST 2022, updateTime=Mon Jun 13 11:09:54 CST 2022, thumbUp=9, visits=null)] 

16:20:22 CST 2022, thumbUp=9, visits=null), Article(id=1535175698518511616, userId=null, title=null, content=7, createTime=Fri Jun 10 16:23:03 CST 2022, updateTime=Fri Jun 10 16:23:03 CST 2022, thumbUp=9, visits=null), Article(id=1536184056574775296, userId=null, title=null, content=7, createTime=Mon Jun 13 11:09:54 CST 2022, updateTime=Mon Jun 13 11:09:54 CST 2022, thumbUp=9, visits=null)]


以上是把mongodb数据库的信息输出出来,测试结束。

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