[WARNING] The requested profile "nexus" could not be activated because it does not exist.

1 错误警告

1	`[WARNING] The requested profile` `"nexus"` `could not be activated because it does not exist.`

2 仔细检查Maven的.setting文件，自己嵌套了两层profiles，注释掉多余的就可以了。

    <profiles>
        <!-- profile | Specifies a set of introductions to the build process, to
            be activated using one or more of the | mechanisms described above. For inheritance
            purposes, and to activate profiles via <activatedProfiles/> | or the command
            line, profiles have to have an ID that is unique. | | An encouraged best
            practice for profile identification is to use a consistent naming convention
            | for profiles, such as 'env-dev', 'env-test', 'env-production', 'user-jdcasey',
            'user-brett', etc. | This will make it more intuitive to understand what
            the set of introduced profiles is attempting | to accomplish, particularly
            when you only have a list of profile id's for debug. | | This profile example
            uses the JDK version to trigger activation, and provides a JDK-specific repo. -->
    <!---->
        <!-- <profile> <id>jdk-1.6</id> <activation> <jdk>1.6</jdk> </activation>
            <repositories> <repository> <id>sonatype-forge</id> <name>sonatype-forge</name>
            <releases> <enabled>false</enabled> <updatePolicy>always</updatePolicy> <checksumPolicy>warn</checksumPolicy>
            </releases> <snapshots> <enabled>true</enabled> <updatePolicy>never</updatePolicy>
            <checksumPolicy>fail</checksumPolicy> </snapshots> <url>http://mirrors.ibiblio.org/pub/mirrors/maven2</url>
            <layout>default</layout> </repository> </repositories> </profile> -->
 
        <!-- | Here is another profile, activated by the system property 'target-env'
            with a value of 'dev', | which provides a specific path to the Tomcat instance.
            To use this, your plugin configuration | might hypothetically look like:
            | | ... | <plugin> | <groupId>org.myco.myplugins</groupId> | <artifactId>myplugin</artifactId>
            | | <configuration> | <tomcatLocation>${tomcatPath}</tomcatLocation> | </configuration>
            | </plugin> | ... | | NOTE: If you just wanted to inject this configuration
            whenever someone set 'target-env' to | anything, you could just leave off
            the <value/> inside the activation-property. | <profile> <id>env-dev</id>
            <activation> <property> <name>target-env</name> <value>dev</value> </property>
            </activation> <properties> <tomcatPath>/path/to/tomcat/instance</tomcatPath>
            </properties> </profile> -->
 
         <profile>
            <id>jdk-1.8</id>
            <activation>
                <activeByDefault>true</activeByDefault>
                <jdk>1.8</jdk>
            </activation>
            <properties>
                <maven.compiler.source>1.8</maven.compiler.source>
                <maven.compiler.target>1.8</maven.compiler.target>
                <maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>
            </properties>
        </profile>
 
 
<!--         <profiles>
 --> <profile>
        <id>nexus</id>
        <repositories>
                <repository>
                    <id>nexus</id>
                    <name>Nexus </name>
                <url>http://new.nexus.jiushiyaokuaile.cn/nexus/content/groups/public</url>
                    <releases><enabled>true</enabled></releases>
                    <snapshots><enabled>true</enabled></snapshots>
                </repository>
        </repositories>
        <pluginRepositories>
                <pluginRepository>
                    <id>nexus</id>
                    <name>Nexus Plugin Repository</name>
                <url>http://new.nexus.jiushiyaokuaile.cn/nexus/content/groups/public</url>
                    <releases><enabled>true</enabled></releases>
                    <snapshots><enabled>true</enabled></snapshots>
                </pluginRepository>
        </pluginRepositories>
    </profile>
<!-- </profiles>
 -->
<!-- <activeProfiles>
    <activeProfile>nexus</activeProfile>
</activeProfiles> -->
 
 
    </profiles>
    <activeProfiles>
        <activeProfile>nexus</activeProfile>
    </activeProfiles>