使用 spring r2dbc 时找不到 javax.persistence 注释

Question

I am trying to use reactive repositories with H2 using Spring Boot .

I have added dependencies

implementation 'org.springframework.boot.experimental:spring-boot-starter-data-r2dbc:0.1.0.M1'
implementation 'org.springframework.boot.experimental:spring-boot-actuator-autoconfigure-r2dbc:0.1.0.M1'
implementation 'io.r2dbc:r2dbc-pool:0.8.0.RELEASE'

My domains looked like this

@Entity
@Table(name = "json_comparison")
public class JsonComparisonResult {
    @Column(name = "comparison_id")
    @Id
    private String comparisonId;
    @Column(name = "left")
    private String leftSide;
    ....

When the dependency was to

implementation "org.springframework.boot:spring-boot-starter-data-jpa:$springBootVersion"

Everything worked fine. But since I have added r2dbc dependencies it wasn't able to find any dependencies for javax.persistence annotations. When I use starter-jpa with reactive repositories it fails on startup (regular Reactive Repositories are not supported by JPA ).

How to solve the problem? Add javax.persistence dependency manually?

What is the problem?

Answer 1

As a solution, I decided to switch to org.springframework.data.relational.core.mapping annotations like @Table , @Column and org.springframework.data.annotation @Id .

import org.springframework.data.annotation.Id;
import org.springframework.data.relational.core.mapping.Column;
import org.springframework.data.relational.core.mapping.Table;

In addition, I had to create tables manually via SQL scripts.