错误:(4， 46) java: 包 org.springframework.boot.autoconfigure 不存

Question

我在构建项目时收到此错误：

Error:(3, 32) java: package org.springframework.boot does not exist
Error:(4, 46) java: package org.springframework.boot.autoconfigure does not exist
Error:(6, 2) java: cannot find symbol
symbol: class SpringBootApplication
Error:(10, 9) java: cannot find symbol
symbol:   variable SpringApplication
location: class com.victorhez.ecommercespringboot.EcommerceSpringBootApplication

我的POM是：

<?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>2.3.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.victorhez</groupId>
<artifactId>ecommerce-spring-boot</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>ecommerce-spring-boot</name>
<description>Ecommerce Project</description>
<properties>
<java.version>1.8</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-data-rest</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
<version>2.3.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot</artifactId>
<version>2.3.0.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

这些依赖项向我显示错误：

<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-data-rest</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>

我的爪哇文件

package com.victorhez.ecommercespringboot;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class EcommerceSpringBootApplication {
public static void main(String[] args) {
SpringApplication.run(EcommerceSpringBootApplication.class, args);
}
}

Answer 1

上述问题是重复的，请参阅包 org.springframework.boot 不存在并尝试按照线程中提到的所有步骤进行操作，我希望这会有所帮助。

另外，请尝试基本步骤并在 eclipse 中重新导入模块，并检查是否自动构建并运行 mvn 全新安装，也转到。M2 位置并搜索罐子。