@SpringBootApplication-无法解决

Question

在我的Java项目中：

在build.gradle中：

plugins {
    id 'groovy'
    id 'java'
}

group 'shopping'
version '1.0'

sourceCompatibility = 1.8

repositories {
    mavenCentral()
}

dependencies {
    compile 'org.codehaus.groovy:groovy-all:2.3.11'

    implementation 'javax.persistence:javax.persistence-api:2.2'
    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
    implementation 'org.springframework.data:spring-data-jpa:1.0.0.RELEASE'
    implementation group: 'org.springframework.boot', name: 'spring-boot-gradle-plugin', version: '2.2.2.RELEASE', ext: 'pom'


    runtimeOnly 'com.h2database:h2'

    testCompile group: 'junit', name: 'junit', version: '4.12'
}

在Java文件中：

import org.springframework.context.annotation.Bean;


@SpringBootApplication
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

    @Bean
    public CommandLineRunner bookDemo(BookRepository bookRepository) {
        return (args) -> {

但是我得到了编译错误：

@SpringBootApplication - can't not resolve
CommandLineRunner - can't not resolve