使用maven设置Eclipse和IntelliJ时出错：
1）Eclipse ------->
a）错误1：
Caused by: org.eclipse.aether.transfer.ArtifactTransferException: Could not tran
sfer artifact org.apache.maven.plugins:maven-resources-plugin:pom:2.7 from/to ce
ntral (https://repo.maven.apache.org/maven2): repo.maven.apache.org
b）错误2：
CoreException: Could not calculate build plan: Plugin org.apache.maven.plugins:maven-compiler-plugin:3.1 or one of its dependencies could not be
resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-compiler-plugin:jar:3.1: ArtifactResolutionException: Failure to transfer
org.apache.maven.plugins:maven-compiler-plugin:pom:3.1 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 org.apache.maven.plugins:maven-
compiler-plugin:pom:3.1 from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org
- CoreException: Could not calculate build plan: Plugin org.apache.maven.plugins:maven-compiler-plugin:3.1 or one of its dependencies could not be
resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-compiler-plugin:jar:3.1: ArtifactResolutionException: Could not transfer artifact
org.apache.maven.plugins:maven-compiler-plugin:pom:3.1 from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org
- Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler-plugin:3.1:testCompile (execution: default-
testCompile, phase: test-compile)
- Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (execution: default-compile,
phase: compile)
2）IntelliJ错误------->
Failed to read Artifact descriptor
...我已经在Windows上设置了Maven，并尝试从命令行进行编译，但出现错误：
3）MVN命令行错误------->
a）
Caused by: org.eclipse.aether.transfer.ArtifactTransferException: Could not tran
sfer artifact org.apache.maven.plugins:maven-resources-plugin:pom:2.7 from/to ce
ntral (https://repo.maven.apache.org/maven2): repo.maven.apache.org
b）Caused by: java.net.UnknownHostException: repo.maven.apache.org