我正在学习本教程https://spring.io/guides/tutorials/rest
在第一步中，当我从教程中复制类Employee时，它显示为package javax.persistence does not exist
我添加了教程中给出的依赖项。我按照教程中的描述使用spring initializr生成了初始项目。我的pom在下面：

<?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>3.1.4</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.trupt</groupId>
    <artifactId>cure</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>cure</name>
    <description>cure</description>
    <properties>
        <java.version>17</java.version>
    </properties>
    <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>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

SDK selected in the IDE is here
Error messages in the IDE
即使在这个简单的步骤中，它也不起作用。
我试过maven reimport，maven clean-install，invalidate caches and restart。这些都不管用。
我应该添加依赖项吗？Spring的数据还不够吗？
这真的很难