解决eclipse+MAVEN提示One or more constraints have not been satisfied.的问题

应用版本：eclipse luna4.4.1

JDK：1.8

Maven：3.2.5

问题现象：

1、编译工程后总该是显示下面两个错误：

　　One or more constraints have not been satisfied.

      Deployment Assembly跟java版本不匹配

解决方案：

在pom.xml中添加下面内容即可，同时也可以解决Maven->update project默认jdk的问题

<profiles>
    <profile>
        <id>jdk-1.8</id>
        <!-- 另外一种激活方式 -->
        <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>
</prof

2、使用Eclipse自动Maven插件更新jar包失败（Nexus仓库配置都正常），提示如下错误：
[INFO] Scanning for projects...
[INFO]
[INFO] Using the builder org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder with a thread count of 1
[INFO]                                                                        
[INFO] ------------------------------------------------------------------------
[INFO] Building  0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[WARNING] The POM for org.apache.maven.plugins:maven-resources-plugin:jar:2.6 is missing, no dependency information available
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.148 s
[INFO] Finished at: 2014-12-30T17:38:07+08:00
[INFO] Final Memory: 4M/15M
[INFO] ------------------------------------------------------------------------
[ERROR] Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failure to find org.apache.maven.plugins:maven-resources-plugin:jar:2.6 in http://localhost:8082/nexus/content/groups/public was cached in the local repository, resolution will not be reattempted until the update interval of nexus has elapsed or updates are forced -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException
 huige 18:06:21
Could not resolve archetype org.apache.maven.archetypes:maven-archetype-quickstart:RELEASE from any of the configured repositories.

......

解决方案：

更新Maven包到最新版本即可（JDK1.8+Eclipse luna4.4.1搭配建议更新Maven到3.2.5版本之后）

preferences-》Maven-》Installations 选择最新的Maven地址