Eclipse中转换的maven项目出错

Question

我正在使用带有m2e插件的Eclipse Juno.我通过Eclipse将我的java项目转换为maven项目

右键单击项目>转到菜单配置>转换为maven项目.

这些是错误:

Multiple annotations found at this line:
- Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler-
 plugin:2.3.2:compile (execution: default-compile, phase: compile)
- Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler-
 plugin:2.3.2:testCompile (execution: default-testCompile, phase: test-compile)
- CoreException: Could not get the value for parameter compilerId for plugin execution default-
 compile: PluginResolutionException: Plugin org.apache.maven.plugins:maven-compiler-plugin:2.3.2 or one of 
 its dependencies could not be resolved: The following artifacts could not be resolved: 
 org.codehaus.plexus:plexus-compiler-manager:jar:1.8.1, org.codehaus.plexus:plexus-compiler-javac:jar:1.8.1: 
 Failure to transfer org.codehaus.plexus:plexus-compiler-manager:jar:1.8.1 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.codehaus.plexus:plexus-compiler-
 manager:jar:1.8.1 from/to central (http://repo.maven.apache.org/maven2): connection timed out to http://
 repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-compiler-manager/1.8.1/plexus-compiler-
 manager-1.8.1.jar
- CoreException: Could not get the value for parameter compilerId for plugin execution default-
 testCompile: PluginResolutionException: Plugin org.apache.maven.plugins:maven-compiler-plugin:2.3.2 or one 
 of its dependencies could not be resolved: The following artifacts could not be resolved: 
 org.codehaus.plexus:plexus-compiler-manager:jar:1.8.1, org.codehaus.plexus:plexus-compiler-javac:jar:1.8.1: 
 Failure to transfer org.codehaus.plexus:plexus-compiler-manager:jar:1.8.1 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.codehaus.plexus:plexus-compiler-
 manager:jar:1.8.1 from/to central (http://repo.maven.apache.org/maven2): connection timed out to http://
 repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-compiler-manager/1.8.1/plexus-compiler-
 manager-1.8.1.jar

如何解决这个问题呢？请帮忙.

Answer 1

Eclipse Juno在创建Maven项目时遇到一些问题，最好的方法是创建Maven项目，创建Java并转换它。

Juno在构建、编译、安装过程中也存在Maven生命周期配置的问题。所以也请自动关闭你的构建。

请按照以下说明解决此问题。

检查 Eclipse 上的代理设置是否位于公司网络后面。

要更改此设置，请转到->窗口->首选项->常规->网络连接并更改活动的提供商。

如果您有一些代理详细信息，请选择 Manaul 作为活动提供商并进行编辑。添加代理详细信息，即主机名和端口，然后单击“保存”。

否则，请尝试从您公司的网络团队获取它。

之后通过 Goto->window->preferences->Maven->user settings 转到 maven 设置

检查是否有名为settings.xml的xml文件，如果没有，请将以下代码添加到文件中并保存在路径中。

作为参考，它将位于：users\your name.m2

<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
                      http://maven.apache.org/xsd/settings-1.0.0.xsd">
  <localRepository/>
  <interactiveMode/>
  <usePluginRegistry/>
  <offline/>
  <pluginGroups/>
  <servers/>
  <mirrors/>
  <proxies>
    <proxy>
      <id>myproxy</id>
      <active>true</active>
      <protocol>http</protocol>
      <host>proxy name</host>
      <port>number</port>
      <username></username>
      <password></password>
      <nonProxyHosts>localhost,127.0.0.1</nonProxyHosts>
    </proxy>
  </proxies>
  <profiles/>
  <activeProfiles/>
</settings>

即使在此之后，如果它不起作用，请转到命令提示符。导航到项目位置。一个接一个地输入命令。- mvn 清理 - mvn 编译 - mvn 安装

希望它对您和其他人有用。