maven 中 指定jdk 和 编译编码，仓库位置

<!-- 配置编译选项 -->
     <profile>
            <id>jdk1.8</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>   
                <encoding>UTF-8</encoding>  
            </properties>   
            
            <repositories>
                <repository>
                  <id>local-server</id>
                  <name>local repository</name>
                  <url>http://st39:8081/nexus/content/groups/public/</url>
                  <layout>default</layout>
                  <snapshotPolicy>always</snapshotPolicy>
                  <releases>  
                    <enabled>true</enabled>  
                  </releases>  
                  <snapshots>  
                    <enabled>true</enabled>  
                  </snapshots> 
                </repository>
                
                <repository>
                  <id>wso2</id>
                  <name>local repository</name>
                  <url>http://dist.wso2.org/maven2/</url>
                  <layout>default</layout>
                  <snapshotPolicy>always</snapshotPolicy>
                  <releases>  
                    <enabled>true</enabled>  
                  </releases>  
                  <snapshots>  
                    <enabled>true</enabled>  
                  </snapshots> 
                </repository>
                
                <repository>
                  <id>central</id>
                  <name>central</name>
                  <url>http://central.maven.org/maven2/</url>
                  <layout>default</layout>
                  <snapshotPolicy>always</snapshotPolicy>
                  <releases>  
                    <enabled>true</enabled>  
                  </releases>  
                  <snapshots>  
                    <enabled>true</enabled>  
                  </snapshots> 
                </repository>
                
                
            </repositories>
     </profile>