springboot使用mongodb存取文件
时间: 2023-10-24 16:28:01 浏览: 111
Spring Boot使用MongoDB存取文件的步骤如下:
1.在全局配置文件(application.properties或application.yml)中配置MongoDB的连接信息,包括主机、端口和数据库名称。例如:
```
spring.data.mongodb.host=127.0.0.1
spring.data.mongodb.port=27017
spring.data.mongodb.database=users
```
2.在项目的pom.xml文件中引入MongoDB的启动器依赖:
```
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
```
3.创建一个实体类来表示文件的数据结构,例如Blog类。可以根据需求设置相应的属性,比如作者、标题、内容、评论等:
```
package com.hang.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.util.Date;
@Data
@NoArgsConstructor
@AllArgsConstructor
public class Blog {
private String id;
private String author;
private String title;
private String content;
private String communication;
private int likeNumbers;
private Date commitTime;
}
```
4.在需要使用MongoDB进行文件存取的地方,创建MongoClient对象,并通过它获取MongoDatabase对象。然后,可以通过MongoDatabase来获取MongoCollection对象,并使用其提供的方法进行文件的增删改查操作。例如,在测试类中的方法中,可以实现文件的插入操作:
```
import com.mongodb.client.MongoClient;
import com.mongodb.client.MongoClients;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;
import org.bson.Document;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
@SpringBootTest
class Springboot09MongodbApplicationTests {
@Test
void contextLoads() {
MongoClient mongoClient = null;
try {
mongoClient = MongoClients.create("mongodb://127.0.0.1:27017");
MongoDatabase users = mongoClient.getDatabase("users");
MongoCollection<Document> test = users.getCollection("test");
test.insertOne(new Document("name","小红"));
System.out.println("数据库连接成功,并成功插入数据");
}catch (Exception e){
e.printStackTrace();
}finally {
mongoClient.close();
}
}
}
```
通过以上步骤,就可以在Spring Boot中使用MongoDB进行文件的存取了。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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