为什么有红色的线，报错？

<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">

<groupId>com.imooc</groupId>

<artifactId>maven-first</artifactId>

<version>1.0.0-RELEASE</version>

<groupId>mysql</groupId>

<artifactId>mysql-connector-java</artifactId>

</dependency>

<groupId>com.belerweb</groupId>

<artifactId>pinyin4j</artifactId>

</dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-webmvc</artifactId>

<version>5.1.1.RELEASE</version>

</dependency>

</dependencies>

</project>

慕粉1465475474 2020-07-22

源自：Maven入门 1-4 Maven依赖管理

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2回答

好帮手慕小脸 2020-07-23 09:50:12

同学你好，根据贴出的报错信息

无法获取org.springframework:spring-expression:jar:5.1.1.RELEASE 这个对应的jar包。

这个可能是spring-expression:jar下载到本地仓库中时没有下载完成，出现问题，导致引用出现问题，建议同学去本地仓库中，查找.m2\repository下的org文件夹，打开后找到springframework文件夹，然后将该目录下的文件删除，在pom.xml文件中重新引入依赖再试试。

Ps:找目录的时候可以在C盘搜索.m2这个文件夹，然后在.m2\repository文件夹下搜索org文件夹

如果我的回答解决了你的疑惑，请采纳。祝：学习愉快~

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好帮手慕小脸 2020-07-22 11:58:30

同学你好，建议同学将鼠标放置报红位置处，查看具体错误是什么呢？

祝学习愉快~

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提问者慕粉1465475474 #1

Failure to transfer org.springframework:spring-expression:jar:5.1.1.RELEASE from https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact org.springframework:spring-expression:jar:5.1.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): repo.maven.apache.org org.eclipse.aether.transfer.ArtifactTransferException: Failure to transfer org.springframework:spring-expression:jar:5.1.1.RELEASE from https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact org.springframework:spring-expression:jar:5.1.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): repo.maven.apache.org at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.newException(DefaultUpdateCheckManager.java:225) at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.checkArtifact(DefaultUpdateCheckManager.java:193) at org.eclipse.aether.internal.impl.DefaultArtifactResolver.gatherDownloads(DefaultArtifactResolver.java:559) at org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads(DefaultArtifactResolver.java:483) at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:401)

2020-07-22 20:22:14