Question

我正在关注this tutorial使用Spring创建一个CRUD应用程序。我想创建一个存储库，我希望它扩展Spring CrudRepository：

package com.movieseat.repositories;

import java.io.Serializable;

import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Repository;


import com.movieseat.models.Movie;

public interface MovieRepository extends CrudRepository<Movie, Serializable> {}

Visual Studio Code说：

无法解析导入org.springframework.data

我已删除.m2文件夹中的存储库文件夹并重新安装但仍未成功。

我想我的pom.xml文件中缺少一个依赖项，但我找不到它。

//编辑。共享后端文件夹中的pom.xml：

    <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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>

        <artifactId>backend</artifactId>

        <name>backend</name>
        <description>The backend project</description>

        <parent>
            <groupId>com.jdriven.ng2boot</groupId>
            <artifactId>parent</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </parent>

        <properties>
            <!-- The main class to start by executing java -jar -->
            <start-class>com.movieseat.Application</start-class>
        </properties>

        <dependencies>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
            </dependency>

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

            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>

            <dependency>
                <groupId>com.jdriven.ng2boot</groupId>
                <artifactId>frontend</artifactId>
                <version>${project.version}</version>
                <scope>runtime</scope>
            </dependency>

            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-devtools</artifactId>
                <optional>true</optional>
            </dependency>
        </dependencies>

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

Answer 1

教程中的gradle文件导入以下Spring data JPA依赖项

dependencies {
    compile('org.springframework.boot:spring-boot-starter-data-jpa')
    ...
}

它的maven等价物是：

<dependency>
    <groupId>org.springframework.data</groupId>
    <artifactId>spring-data-jpa</artifactId>
    <version>1.11.7.RELEASE</version>
</dependency>

因此，您必须在pom文件中添加上述依赖项。

Answer 2

使用以下Maven依赖

<!-- https://mvnrepository.com/artifact/org.springframework.data/spring-data-commons-core -->
<dependency>
    <groupId>org.springframework.data</groupId>
    <artifactId>spring-data-commons-core</artifactId>
    <version>1.0.0.RELEASE</version>
</dependency>

您可以根据您使用的Spring版本更改它的版本。用户关注链接。 https://mvnrepository.com/artifact/org.springframework.data/spring-data-commons-core

如何安装Springframework CrudRepository？

2 个答案: