SpringBoot整合Mongodb

 

目录

1 创建模块

2 配置文件

3 使用MongoTemplate进行CRUD

---

1 创建模块

选nosql:spring data mangodb

或手动导入依赖

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

2 配置文件

spring:
  data:
    mongodb:
#      最后一个ssm_db是数据库的名字
      uri: mongodb://localhost/ssm_db

3 使用MongoTemplate进行CRUD

 

package com.qing;
 
import com.domain.Book;
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.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.data.mongodb.gridfs.GridFsCriteria;
 
import java.util.List;
 
@SpringBootTest
class SpringbootMongoApplicationTests {
 
	@Autowired
	private MongoTemplate mongoTemplate;
 
	//增
	@Test
	void testSave() {
		Book book = new Book(2,"springboot学习手册", "工具书", "不会就翻书");
		mongoTemplate.save(book);
	}
 
	//查所有
	@Test
	void testFind() {
		List<Book> books = mongoTemplate.findAll(Book.class);
		for (Book book:books) {
			System.out.println(book);
		}
	}
 
	//条件查询
	@Test
	void testFindBy() {
		Book book = new Book();
		book.setId(1);
		Query query = new Query(Criteria.where("id").is(1)
		.and("name").is("springboot学习手册"));
		List<Book> books = mongoTemplate.find(query,Book.class);
		for (Book book1:books) {
			System.out.println(book1);
		}
	}
 
	//删
	@Test
	void testRemove() {
		Query query = new Query(Criteria.where("id").is(2));
		mongoTemplate.remove(query,Book.class);
	}
 
	//改
	@Test
	void testUpdate() {
		Query query = new Query(Criteria.where("name").is("springboot学习手册"));
		Update update = new Update();
		update.set("name","万能学习手册");
		update.set("type","手册");
		mongoTemplate.updateMulti(query,update,Book.class);
	}
 
 
}

 最后附上

package com.domain;
 
import lombok.Data;
 
@Data
public class Book {
    private Integer id;
    private String name;
    private String type;
    private String description;
 
    public Book() {
    }
 
    public Book(Integer id, String name, String type, String description) {
        this.id = id;
        this.name = name;
        this.type = type;
        this.description = description;
    }
 
    public Book(String name, String type, String description) {
        this.name = name;
        this.type = type;
        this.description = description;
    }
}