Could not transfer artifact org.apache.maven.plugins:maven-surefire-plugin:pom:2.7.1 from/to central (http://repo1.maven.org/maven2)

Question

I have created a new maven project in SpringSource Tool Suite. I am getting this error in my new maven project.

Failure to transfer org.apache.maven.plugins:maven-surefire-plugin:pom:2.7.1 from http://repo1.maven.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-surefire-plugin:pom:2.7.1 from/to central (http://repo1.maven.org/maven2): Connect times out

pom.xml:

<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>com.test.app</groupId>   <artifactId>TestApp</artifactId>   <version>0.0.1-SNAPSHOT</version>   <packaging>jar</packaging>    <name>TestApp</name>   <url>http://maven.apache.org</url>    <properties>     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>   </properties>    <dependencies>     <dependency>       <groupId>junit</groupId>       <artifactId>junit</artifactId>       <version>3.8.1</version>       <scope>test</scope>     </dependency>   </dependencies> </project> 

Settings.xml

<?xml version="1.0" encoding="UTF-8"?> <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">   <pluginGroups>   </pluginGroups>  <proxies>     <proxy>       <id>optional</id>       <active>true</active>       <protocol>http</protocol>       <username>user</username>       <password>pass</password>       <host>ip</host>       <port>80</port>       <nonProxyHosts>local.net|some.host.com</nonProxyHosts>     </proxy>       </proxies>    <servers>     </servers>     <mirrors>        <mirror>       <id>mirrorId</id>       <mirrorOf>repositoryId</mirrorOf>       <name>Human Readable Name for this Mirror.</name>       <url>http://repo1.maven.org/maven2/</url>     </mirror>       </mirrors>   <profiles>  </profiles> </settings> 

Please note that I am able to build it.Error is showing in pom.xml inside IDE .Any solutions?

Answer 1

Simplify things by using the following settings.xml:

<?xml version="1.0" encoding="UTF-8"?> <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">   <proxies>     <proxy>       <id>myproxy</id>       <active>true</active>       <protocol>http</protocol>       <username>user</username>  <!-- Put your username here -->       <password>pass</password>  <!-- Put your password here -->       <host>123.45.6.78</host>   <!-- Put the IP address of your proxy server here -->       <port>80</port>            <!-- Put your proxy server's port number here -->       <nonProxyHosts>local.net|some.host.com</nonProxyHosts> <!-- Do not use this setting unless you know what you're doing. -->     </proxy>       </proxies>  </settings> 

Under Linux/Unix, place it under ~/.m2/settings.xml. Under Windows place it under c:\documents and settings\youruser\.m2\settings.xml or c:\users\youruser\.m2\settings.xml.

You don't need the <mirrors/>, <profiles/> and <settings/> sections, unless you really know what they're for.