maven配置jdk1.8环境

 <!-- 局部jdk配置，pom.xml中 -->
     <build>
         <plugins>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <configuration>
                     <source>1.8</source>
                     <target>1.8</target>
                 </configuration>
             </plugin>
         </plugins>
     </build>  

 <!-- 全局jdk配置，settings.xml -->
     <profile>
         <id>jdk18</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>