maven pom文件中标签报错解决

Plugin org.apache.maven.plugins:maven-surefire-plugin:2.7.1 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-surefire-plugin:jar:2.7.1: Could not transfer artifact org.apache.maven.plugins:maven-surefire-plugin:pom:2.7.1 from/to central (http://repo1.maven.org/maven2): Connection refused: no further information to http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-surefire-plugin/2.7.1/maven-surefire-plugin-2.7.1.pom 

出现以上错误时，加入以下代码：

        org.apache.maven.plugins
        maven-surefire-plugin
        2.7.1

 运行maven install之后刷新，即可