idea中指定jdk版本

 

 通过maven指定，如果是在setting.xml中，则指定环境。以前每次打开idea都需要设置jdk target 为1.8.原来在maven总设置下即可。

<!-- 全局jdk配置，settings.xml -->
    <profile>  
        <id>jdk18</id>  
        <activation>  
            <activeByDefault>true</activeByDefault>  
            <jdk>1.8</jdk>  
        </activation>  
        <properties>  
        <!-- want to use the Java 8 language features, Default 1.5 -->
            <maven.compiler.source>1.8</maven.compiler.source>  
             <!-- want the compiled classes to be compatible with JVM 1.8, Default 1.5 -->
            <maven.compiler.target>1.8</maven.compiler.target>  
             <!-- Version of the compiler to use, ex. "1.3", "1.5", if fork is set to true -->
            <maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>  
        </properties>   
    </profile> 

如果使用在pom.xml中定义，使用plugins

 <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>