因為maven編譯的時候沒有將xml檔案build到target目錄中，

解決辦法：

在該模組pom.xml檔案中，新增掃描xml的build註解；因為build由maven外掛執行，所以此配置配在maven的pom.xml檔案中

 <build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.xml</include>
                    <include>**/*.properties</include>
                </includes>
            </resource>
        </resources>
    </build>