maven问题ArtifactDescriptorException

Question

我正在尝试将Spring REST示例放在这里.项目来源在这里.

我解压缩文件并将顶级文件夹重命名为'myproject'并将其作为现有的maven项目导入eclipse.但是,由于缺少春季罐子,观察到很多编译问题.我想这是因为maven无法导入这些罐子.当我检查pom.xml时,我看到eclipse抱怨以下错误:

ArtifactDescriptorException: Failed to read artifact descriptor for com.fasterxml.jackson.core:jackson-databind:jar:2.2.2: ArtifactResolutionException: Failure to transfer com.fasterxml.jackson.core:jackson-databind:pom:2.2.2 from http://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 com.fasterxml.jackson.core:jackson-databind:pom:2.2.2 from/to central (http://repo.maven.apache.org/maven2): connection timed out to http://repo.maven.apache.org/maven2/com/fasterxml/jackson/core/jackson-databind/2.2.2/jackson-databind-2.2.2.pom

和

ArtifactDescriptorException: Failed to read artifact descriptor for com.fasterxml.jackson.core:jackson-databind:jar:2.2.2: ArtifactResolutionException: Failure to transfer com.fasterxml.jackson.core:jackson-databind:pom:2.2.2 from http://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 com.fasterxml.jackson.core:jackson-databind:pom:2.2.2 from/to central (http://repo.maven.apache.org/maven2): connection timed out to http://repo.maven.apache.org/maven2/com/fasterxml/jackson/core/jackson-databind/2.2.2/jackson-databind-2.2.2.pom

我是maven的新手,所以在这里挣扎.请帮我解决一下.

谢谢.

Answer 1

对我来说,这是因为Eclipse正在缓存异常.尝试:

右键单击项目 - > maven - > update-project - >强制更新快照/发布 - >确定.

它对我来说也是同样的问题.

Answer 2

您可以尝试使用以下依赖项吗：

<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.2.3</version>

并尝试使用 -U 标志运行 Maven 应用程序。