<profile>???????<id>jdk1.7</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>? ?在全局setting.xml 加了沒有生效還是1.5