idea 设置项目maven默认启用jdk1.8编译

pom.xml配置，此项优先。

<build>

        <finalName>myweb</finalName>

        <plugins>

            <!--JDK版本 -->

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-compiler-plugin</artifactId>

                <version>2.5.1</version>

                <configuration>

                    <source>1.8</source>

                    <target>1.8</target>

                    <encoding>UTF-8</encoding>

                    <showWarnings>true</showWarnings>

                </configuration>

            </plugin>

        </plugins>

</build>

 

以上未配置时，可以在pom.xml  properties中配置

<properties>
<!--设置jdk的版本号为1.8-->
       <maven.compiler.source>1.8</maven.compiler.source>
　　<maven.compiler.target>1.8</maven.compiler.target>
</properties>