title: Unresolved plugin: 'org.apache.maven.plugins:maven-jar-plugin:2.4'
body: <p>After I use IntelliJ IDEA to create a maven module, there is some problem in the Maven Projects view. And when my cursor hover on the maven project, i see this:</p>
  
  <pre><code>Project:
  cn.itcast.babasport:parent:1.0-SNAPSHOT
  Location:
  /home/shuaidi/IdeaProjects/parent/pom.xml
  
  Problems:
  Unresolved plugin: 'org.apache.maven.plugins:maven-jar-plugin:2.4'
  
  Unresolved plugin: 'org.apache.maven.plugins:maven-compiler-plugin:3.1'
  
  Unresolved plugin: 'org.apache.maven.plugins:maven-surefire-plugin:2.12.4'
  
  Unresolved plugin: 'org.apache.maven.plugins:maven-install-plugin:2.4'
  
  Unresolved plugin: 'org.apache.maven.plugins:maven-site-plugin:3.3'
  </code></pre>
  
  <p>This is my first time using IntelliJ IDEA, so I do these thing with a new installed IDEA and a new installed maven, and i just create a maven module and didn't do any other thing. I don't know why these problem appearance.
  I just want to create a maven module without any problem.</p>
  
  <p>ps:</p>
  
  <p>this is all my pom file.</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;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"&gt;
      &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
  
      &lt;groupId&gt;cn.itcast.babasport&lt;/groupId&gt;
      &lt;artifactId&gt;parent&lt;/artifactId&gt;
      &lt;version&gt;1.0-SNAPSHOT&lt;/version&gt;
  
  
  &lt;/project&gt;
  </code></pre>