Spring Boot Orm 简明教程

Spring Boot ORM - Maven EclipseLink

默认情况下，Spring Boot 使用 Hibernate 作为 ORM 实现。为了使用 EclipseLink，我们首先需要从 pom.xml 中的 spring-data-jpa 从属关系中排除 hibernate 从属关系，

<dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-data-jpa</artifactId>
   <exclusions>
      <exclusion>
         <groupId>org.hibernate</groupId>
         <artifactId>hibernate-entitymanager</artifactId>
      </exclusion>
      <exclusion>
         <groupId>org.hibernate</groupId>
         <artifactId>hibernate-core</artifactId>
      </exclusion>
   </exclusions>
</dependency>

现在在 pom.xml 中包含 eclipse-link 从属关系。

<dependency>
   <groupId>org.eclipse.persistence</groupId>
   <artifactId>org.eclipse.persistence.jpa</artifactId>
   <version>2.7.8</version>
</dependency>

以下是完整的 pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>2.5.5</version>
      <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>com.tutorialspoint</groupId>
   <artifactId>springbootorm</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <name>Spring Boot ORM</name>
   <description>Demo project for Spring Boot ORM</description>
   <properties>
      <java.version>11</java.version>
   </properties>
   <dependencies>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-data-jpa</artifactId>
         <exclusions>
            <exclusion>
               <groupId>org.hibernate</groupId>
               <artifactId>hibernate-entitymanager</artifactId>
            </exclusion>
            <exclusion>
               <groupId>org.hibernate</groupId>
               <artifactId>hibernate-core</artifactId>
            </exclusion>
         </exclusions>
      </dependency>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
      </dependency>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-devtools</artifactId>
         <scope>runtime</scope>
         <optional>true</optional>
      </dependency>
      <dependency>
         <groupId>org.eclipse.persistence</groupId>
         <artifactId>org.eclipse.persistence.jpa</artifactId>
         <version>2.7.8</version>
      </dependency>
      <dependency>
         <groupId>mysql</groupId>
         <artifactId>mysql-connector-java</artifactId>
         <scope>runtime</scope>
      </dependency>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
      </dependency>
   </dependencies>
   <build>
      <plugins>
         <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
         </plugin>
      </plugins>
   </build>
</project>

保存文件，Eclipse 将自动更新从属关系。