创建maven project时工程报错
Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6: Could not transfer artifact org.apache.maven.plugins:maven-resources-plugin:pom:2.6 from/to nexus (http://localhost:8080/nexus-2.7.0-06/content/groups/public/): Connect to localhost:8080 [localhost/127.0.0.1, localhost/0:0:0:0:0:0:0:1] failed: Connection refused: connect -> [Help 1]
方法一：网上有很多人说以下方法可行
1.打开maven根目录里的config并打开settings.xml找到本地仓库位置即<localRepository>F:/taotao/repository</localRepository>
2.打开F:\taotao\repository\org\apache\maven\plugins清空里面的plugins
3.右键maven工程->run as->maven install
方法二：
1.打开maven根目录里的config并打开settings.xml添加
<mirror>
<id>Central</id>
<url>/maven2</url>
<mirrorOf>central</mirrorOf>
</mirror>
2.打开F:\taotao\repository\org\apache\maven\plugins清空里面的plugins
3.右键maven工程->run as->maven install，此时将会下载大部分plugins，但是又出现了以下问题
Failed to execute goal org.apache.maven.plugins:maven-war-plugin:2.2:war (default-war) on project itcast-usemanage: Error assembling WAR: webxml attribute is required (or pre-existing WEB-INF/web.xml if executing in update mode) -> [Help 1]
4-1.项目中有web.xml，则在pom.xml的<build>节点上加上maven-war-plugin配置
<plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-war-plugin</artifactId> <version>3.0.0</version> <configuration> <webResources> <resource> <directory>WebContent</directory> </resource> </webResources> </configuration> </plugin> </plugins>
4-2.项目中有web.xml，则在pom.xml的<build>节点上加上maven-war-plugin配置
<plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-war-plugin</artifactId><version>3.0.0</version><configuration><failOnMissingWebXml>false</failOnMissingWebXml></configuration></plugin></plugins>5.右键maven工程->run as->maven install，成功解决问题
方法三：
1.windows->preferences->maven->lifecycle mapping找到里面的mapping file location
地址为：D:/itcast-workspace/.metadata/.plugins/org.eclipse.m2e.core/lifecycle-mapping-metadata.xml
当我们打开的时候发现招不到这个路径
2.打开eclipses的根目录打开plugins找到名为org.eclipse.m2e.lifecyclemapping.defaults_1.5.0.0606-0033.jar的包
3.解压步骤2中的jar包至步骤1中的mapping file location并打开lifecycle-mapping-metadata.xml
4.如缺少maven-compiler-plugin就添加其配置
<pluginExecution>
<pluginExecutionFilter>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<versionRange>[2.5.1,)</versionRange>
<goals>
<goal>testCompile</goal>
<goal>compile</goal>
</goals>
</pluginExecutionFilter>
<action>
<ignore/>
</action>
</pluginExecution>
5.windows->preferences->maven中将update maven projects on startup勾上
6.右键项目->maven->update projects
