我正在努力让Maven在我的Eclipse工作中工作，但我遇到了几个问题，我不知道如何处理它们。
1）在Eclipse Marketplace中，我安装了与Maven相关的以下内容： -Java 8支持Eclipse Kepler SR2的m2e - Eclipse的Maven集成（Luna和更新版）
2）。当我试图将我的java项目转换为Maven时，我遇到了以下错误：
- CoreException: Could not calculate build plan: Plugin org.apache.maven.plugins:maven-compiler-plugin:3.3 or
one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-
compiler-plugin:jar:3.3: ArtifactResolutionException: Could not transfer artifact org.apache.maven.plugins:maven-
compiler-plugin:pom:3.3 from/to central (https://repo.maven.apache.org/maven2): repo.maven.apache.org
- Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler-plugin:
3.3:testCompile (execution: default-testCompile, phase: test-compile)
- CoreException: Could not calculate build plan: Plugin org.apache.maven.plugins:maven-compiler-plugin:3.3 or
one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-
compiler-plugin:jar:3.3: ArtifactResolutionException: Failure to transfer org.apache.maven.plugins:maven-compiler-
plugin:pom:3.3 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.apache.maven.plugins:maven-compiler-plugin:pom:3.3 from/to central (https://repo.maven.apache.org/
maven2): repo.maven.apache.org
- Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler-plugin:
3.3:compile (execution: default-compile, phase: compile)
3）之后，在这里和那里有关于类似问题的一些回复之后，我已经将我的网络选项更改为“Native”，但它没有帮助。
4）我已经尝试在Eclipse文件夹中找到Maven的“settings.xml”，但没有。
5）我的pom.xml文件：
<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>
<groupId>Kobiety_do_kodu</groupId>
<artifactId>Kobiety_do_kodu</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Kobiety_do_kodu</name>
<description>Introductory project from web</description>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
所以看起来它虽然标记为安装在Eclipse Marketplace中，但它下面没有任何东西？
你能帮助我让它运行吗？