maven配置jdk1.8环境

https://blog.csdn.net/acmer_ak/article/details/70475889

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1. <!-- 局部jdk配置，pom.xml中 -->  
2.     <build>    
3.         <plugins>    
4.             <plugin>    
5.                 <groupId>org.apache.maven.plugins</groupId>    
6.                 <artifactId>maven-compiler-plugin</artifactId>    
7.                 <configuration>    
8.                     <source>1.8</source>    
9.                     <target>1.8</target>    
10.                 </configuration>    
11.             </plugin>    
12.         </plugins>    
13.     </build>    

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1. <!-- 全局jdk配置，settings.xml -->  
2.     <profile>    
3.         <id>jdk18</id>    
4.         <activation>    
5.             <activeByDefault>true</activeByDefault>    
6.             <jdk>1.8</jdk>    
7.         </activation>    
8.         <properties>    
9.             <maven.compiler.source>1.8</maven.compiler.source>    
10.             <maven.compiler.target>1.8</maven.compiler.target>    
11.             <maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>    
12.         </properties>     
13.     </profile>