idea远程仓库链接失败

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<mirrors>
    <mirror>
      <id>alimaven</id>
      <mirrorOf>central</mirrorOf>
      <name>aliyun maven</name>
      <url>http://maven.aliyun.com/nexus/content/groups/public/</url>        
    </mirror>
  </mirrors>
  
  <profiles>
    <profile>
        <id>dev</id>
        <repositories>
            <repository>
                <id>Nexus</id>
                <url>http://121.42.166.202:8081/nexus/content/groups/public</url>
                <releases>
                    <enabled>true</enabled>
                    <updatePolicy>always</updatePolicy>
                    <checksumPolicy>warn</checksumPolicy>
                </releases>
                <snapshots>
                    <enabled>true</enabled>
                    <updatePolicy>never</updatePolicy>
                    <checksumPolicy>fail</checksumPolicy>
                </snapshots>
            </repository>
        </repositories>
        <pluginRepositories>
            <pluginRepository>
                <id>Nexus</id>
                <url>http://121.42.166.202:8081/nexus/content/groups/public</url>
                <releases>
                    <enabled>true</enabled>
                    <checksumPolicy>warn</checksumPolicy>
                </releases>
                <snapshots>
                    <enabled>true</enabled>
                    <checksumPolicy>fail</checksumPolicy>
                </snapshots>
            </pluginRepository>
        </pluginRepositories>
        <!-- <properties> <environment.type>prod</environment.type> </properties> -->
    </profile>

maven配置

 <repositories>
    <repository>
      <id>alimaven</id>
      <name>Maven Aliyun Mirror</name>
      <url>http://maven.aliyun.com/nexus/content/repositories/central/</url>
      <releases>
        <enabled>true</enabled>
      </releases>
      <snapshots>
        <enabled>false</enabled>
      </snapshots>
    </repository>
  </repositories>

pom.xml配置文件