MongoDB整合springboot之基本增删查改

分手后的思念是犯贱 2022-10-17 05:56 248阅读 0赞

**1、yml配置文件**

server:
      port: 8080
    
    spring:
      data:
        mongodb:
          uri: mongodb://localhost:27017/test

**2、实体类**

package com.example.mongodb.Pojo;
    
    import lombok.AllArgsConstructor;
    import lombok.Data;
    import lombok.NoArgsConstructor;
    import org.springframework.data.annotation.Id;
    import org.springframework.data.mongodb.core.mapping.Document;
    
    import java.io.Serializable;
    
    @Document(collection = "User")
    @Data
    @AllArgsConstructor
    @NoArgsConstructor
    public class User implements Serializable {
        
       // @Id
        private Integer Id;
        private String name;
        private String age;
    }

**3、Dao层**

import com.example.mongodb.Pojo.User;
    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;
    
    @Component
    public class UserDao {
        
        @Autowired
        private MongoTemplate mongoTemplate;
    
        public void saveUser(User user){
        
            mongoTemplate.save(user);
        }
    
        public void removeUser(Integer id){
        
            Query query=new Query(Criteria.where("Id").is(id));
            mongoTemplate.remove(query,User.class);
        }
    
        public void updateUser(User user){
        
            Query query=new Query(Criteria.where("Id").is(user.getId()));
    
            Update update=new Update();
            update.set("name",user.getName());
            update.set("age",user.getAge());
            mongoTemplate.updateFirst(query,update,User.class);
        }
    
        public User find(Integer id){
        
            Query query=new Query(Criteria.where("Id").is(id));
            return mongoTemplate.findOne(query,User.class);
        }
    }

**4、相关Test类**

import com.example.mongodb.Dao.UserDao;
    import com.example.mongodb.Pojo.User;
    import org.junit.jupiter.api.Test;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.test.context.SpringBootTest;
    import org.springframework.data.mongodb.core.query.Criteria;
    import org.springframework.data.mongodb.core.query.Query;
    import org.springframework.data.mongodb.core.query.Update;
    
    @SpringBootTest
    class MongodbApplicationTests {
        
        @Autowired
        private UserDao userDao;
    
        @Test
        void contextLoads() {
        
        }
    
        @Test
        public void saveUser(){
        
            User user=new User(1,"name1","30");
            userDao.saveUser(user);
            user= userDao.find(1);
            System.out.println(user);
        }
    
        @Test
        public void removeUser(){
        
            userDao.removeUser(1);
        }
        @Test
        public void updateUser(){
        
            User user=new User(1,"name2","28");
            userDao.updateUser(user);
        }
    
        @Test
        public User find(){
        
            User user= userDao.find(1);
            System.out.println(user);
            return user;
        }
    }