Intellij IDEA配置maven插件在编译时映射到lib目录，否则需要手动导入

<groupId>com.springmvc.leon</groupId>
<artifactId>leon</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>


<!--配置Maven编译插件 -->
<build>
    <finalName>leon</finalName>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.5</version>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
                <compilerArguments>
                    <extdirs>src/main/webapp/WEB-INF/lib</extdirs><!-- 无此指定则需要手动把maven的jar包，映射到lib下面 -->
                    <bootclasspath>${java.home}/lib/rt.jar;${java.home}/lib/jce.jar</bootclasspath>
                </compilerArguments>
                <!-- 跳过测试用例 ,也不编译-->
                <skip>true</skip>
            </configuration>
        </plugin>
        <!-- 跳过测试用例 -->
        <plugin>
            <artifactId>maven-surefire-plugin</artifactId>
            <configuration>
                <skipTests>true</skipTests>
            </configuration>
        </plugin>
    </plugins></build>

否则，需要手动点击Put into Output Root，如果maven又添加新的jar包，还要把右侧的jar包映射进去。没有上面方法简单