解决eclipse中MAVEN项目提示One or more constraints have not been satisfied

编译maven项目后报错

One or more constraints have not been satisfied.

可以在pom.xml文件中添加如下配置：

<project>……………………  <profiles>    <profile>        <id>jdk-1.7</id>        <activation>            <activeByDefault>true</activeByDefault>            <jdk>1.7</jdk>        </activation>        <properties>            <maven.compiler.source>1.7</maven.compiler.source>            <maven.compiler.target>1.7</maven.compiler.target>            <maven.compiler.compilerVersion>1.7</maven.compiler.compilerVersion>        </properties>    </profile>  </profiles></project>

同时也可以解决Maven–>update project时默认jdk的问题