如何解决警告无法识别的标签：＆＃39; snapshotPolicy＆＃39;？

Question

当maven build出现警告时：

[WARNING] Unrecognised tag: 'snapshotPolicy' (position: START_TAG seen ...</url>\n          <snapshotPolicy>... @269:27)  @ C:\Program Files\JetBrains\IntelliJ IDEA 2017.1.2\plugins\maven\lib\maven3\conf\settings.xml, line 269, column 27

配置文件部分是：

   <profile>
  <id>nexus</id>
  <activation>
    <activeByDefault>true</activeByDefault>
  </activation>
  <repositories>
    <repository>
      <id>nexus</id>
      <name>Nexus</name>
      <url>http://172.16.1.79:8082/repository/maven-public/</url>
      <snapshotPolicy>always</snapshotPolicy>
      <releases>
        <enabled>true</enabled>
      </releases>
      <snapshots>
        <enabled>true</enabled>
      </snapshots>
    </repository>
  </repositories>
</profile>

有问题吗？

演示配置如下：

<profile>
  <id>jdk-1.4</id>
  <activation>
    <jdk>1.4</jdk>
  </activation>
  <repositories>
    <repository>
      <id>jdk14</id>
      <name>Repository for JDK 1.4 builds</name>
      <url>http://www.myhost.com/maven/jdk14</url>
      <layout>default</layout>
      <snapshotPolicy>always</snapshotPolicy>
    </repository>
  </repositories>
</profile>

如何解决警告无法识别的标签：＆＃39; snapshotPolicy＆＃39; ，我无法找到maven办公室网站here

Answer 1

<!--http://maven.apache.org/settings.html#Activation-->
<profiles>
    <profile>
      <id>nexus</id>
        <activation>
            <activeByDefault>true</activeByDefault>
        </activation>
        <repositories>
            <repository>
                <id>nexus</id>
                <name>Nexus</name>
                <url>http://172.16.1.79:8082/repository/maven-public/</url>

                <releases>
                    <enabled>true</enabled>
                    <updatePolicy>always</updatePolicy>
                </releases>
                <snapshots>
                    <enabled>true</enabled>
                    <updatePolicy>daily</updatePolicy>
                </snapshots>
            </repository>
        </repositories>
    </profile>
</profiles>