Java在IntelliJ中添加javax.persistence

Question

我正在尝试创建一个基本的 Java Spring 程序。从哪里获取 javax.persistence？它无法解析持久性，并且尝试后无法在 Web 上查找 JAR。目前使用 IntelliJ 。

https://spring.io/guides/tutorials/rest/

package payroll;

import java.util.Objects;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;

@Entity
class Employee {

  private @Id @GeneratedValue Long id;
  private String name;
  private String role;

Answer 1

该依赖项来自 spring-boot-starter-data-jpa .

请查看教程中建议的依赖项(jpa、web、h2)。

如果您使用Gradle你应该有:

dependencies {
  implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
  implementation 'org.springframework.boot:spring-boot-starter-web'
  runtimeOnly 'com.h2database:h2'
  testImplementation 'org.springframework.boot:spring-boot-starter-test'
}

或者Maven :

  <dependencies>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
      <groupId>com.h2database</groupId>
      <artifactId>h2</artifactId>
      <scope>runtime</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
    </dependency>
  </dependencies>