maven-compiler-plugin

 <properties>
        <!-- 指定字符集 -->
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.build.timestamp.format>yyyyMMddHHmm</maven.build.timestamp.format>
        <prov.version>9.0.0-SNAPSHOT</prov.version>
        <core.version>9.0.4-SNAPSHOT</core.version>
        <spring-dbunit-test.version>1.3.0</spring-dbunit-test.version>

        <jdk.compiler.level>1.7</jdk.compiler.level>

        <maven.compiler.encoding>UTF-8</maven.compiler.encoding>
    </properties>
<plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-compiler-plugin</artifactId>
      <configuration>
           <source>${jdk.compiler.level}</source>
           <target>${jdk.compiler.level}</target>
           <encoding>${maven.compiler.encoding}</encoding>
            <fork>true</fork>
       </configuration>
 </plugin>