maven install時出現編碼格式感嘆號

將以下代碼
<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>

放置pom.xml文件上的

<project></project>中

還有就是配置

<build>
    <pluginManagement>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.2</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                    <showWarnings>true</showWarnings>
                </configuration>
            </plugin>
        </plugins>

    </pluginManagement>
</build>