使用spring data MongoDB对MongoDB进行简单CURD操作示例

本文章为作者个人学习笔记，仅作参考。

1.application.properties配置

spring.data.mongodb.database=[数据库名]
spring.data.mongodb.host=localhost[主机名,本机：localhost]
spring.data.mongodb.port=[数据库端口，默认:27017]

2.根据数据库文档定义实体类：

@RequiredArgsConstructor
@ToString
@Document(collection = "first")
@Setter
public class UserData {
    @MongoId
    ObjectId id;
    @NonNull
    private Integer code;
    @NonNull
    private String name;

    @Field("data")
    private Data data;

    private String message;
    @Field("refresh_token")
    private  String refreshToken;
    private String status;
    private Integer ttl;
}

@Persistent
@Collation
@Inherited
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE})
public @interface Document {
    @AliasFor("collection")
    String value() default ""; // 指定文档名

    @AliasFor("value")
    String collection() default ""; // 指定文档名

    String language() default ""; // 指定文档语言

    @AliasFor(
        annotation = Collation.class,
        attribute = "value"
    )
    String collation() default ""; // 指定排序规则
}

3.声明接口，可在接口定义自定义查询方法：

public interface FirstRepository extends MongoRepository<UserData, String> {

}

4.注入依赖，可使用自带的插入等方法

@Repository
public class Example {
    private final FirstRepository firstRepository;
    @Autowired
    public Example(FirstRepository firstRepository) {
        this.firstRepository = firstRepository;
    }

    public void  insert(UserData userData) {
        firstRepository.save(userData);
        System.out.println("插入完成！");
    }
}

5.运行实例即可

@SpringBootApplication
public class DemoApplication {

    public static void main(String[] args) {
        ConfigurableApplicationContext context = SpringApplication.run(DemoApplication.class, args);

        UserData userData = new UserData(200, "xzt");
        Data data = new Data(400);
        userData.setData(data);
        Example example = context.getBean(Example.class);
        example.insert(userData);
    }

}